WILL GIVE BRAINLIEST! Use Vieta’s formulas to find the sum and the product of the roots of the equation: y^2−19=0 y1+y2= ? y1 * y2= ?
Answer:
y1+y2=0; y1*y2 = -19
Step-by-step explanation:
We have y^2-19=0
Let's solve the equation
y^2=19
y=sqrt(19); y= - sqrt(19)
From there you can solve for the answer ;)
My father invests $5000 in a new bank that has an annual
interest rate of 3.8%. Find the balance
after 10 years if it is compounded yearly. Round your answer to
the nearest whole dollar.
$
compare the values of each 7 in the number 771,548
Answer:
there's a seven in the hundred thousand place in the ten thousand place
Step-by-step explanation:
is 1.25 the same as 25%?
Answer:
No
Step-by-step explanation:
1.25 as a percentage is 125%.
25% as a decimal is 0.25.
the radius of the wheel on a bike is 19 inches. if the wheel is revolving at 140 revolutions per minute, what is the linear speed of the bike, in miles per hour?
Therefore, the linear speed of the wheel on a bike is approximately 0.9π miles per hour.
What is meant by linear speed?The pace at which an object travels a specific distance in a predetermined amount of time is known as linear speed. By dividing the distance traveled by the time it takes to cover that distance, it may be used to determine how rapidly an item is travelling in a straight line. For instance, if a car moves 100 meters in 10 seconds, its linear speed is 10 meters per second. Linear speed is distinct from average speed, which takes into account any variations in velocity or direction throughout the duration of a voyage. Linear speed is also distinct from tangential speed, which is the pace at which an item travels along a circular route. Physics' fundamental idea of linear speed.
How to solve?
C=2πr,
C=2π(19)=38π.
linear speed of v=(38π/60)*5280=33.6π feet per second.
final speed of v=(33.6π/3600)*60=0.9π miles per hour.
Therefore, the linear speed of the bike is approximately 0.9π miles per hour.
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Are the triangles similar?
Yes SAS
Yes SSS
Yes AA
No
The two triangles are similar using the AA criteria and option C is the correct answer.
What are similar triangles?If two figures share the same shape but not necessarily the same size, they are considered to be comparable.
If the respective sides of two triangles have the same ratio and the corresponding angles are equal, then the triangles are comparable (or proportion). Triangles that are similar will have the same shape but may not be the exact same size.
Two triangles are said to be similar if their corresponding angles are equal.
For the first triangle the sum of interior angle is 180 thus:
60 + 53 + angle E = 180
angle E = 180 - 113
angle E = 67
From the two figures we observe that:
∠DCR = ∠GFH, and
∠DEC = ∠GHF
Hence, the two triangles are similar using the AA criteria and option C is the correct answer.
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2|-5| - 3(-5•4)
what do i do
Answer:
70
See explanation below
Step-by-step explanation:
The absolute value of a number is always its positive value
|-5| means absolute value of -5 which is 5
2|-5| becomes 2 · 5 = 10
- 5 · 4 = -20
-3(-5 · 4) becomes - 3 ( - 20 ) = + 60
So
2|-5| - 3(-5•4) = 10 + 60 = 70
why might a repeated-measures study require half the number of subjects compared to a similar matched-subjects study with the same number of scores?
The repeated measures studies require fewer subjects than matched subjects studies with the same number of outcomes is that repeated measures designs reduce intersubject variability.
In repeated measures studies, each participant is measured multiple times under different conditions or treatments.
Whereas, In a matched-subjects study, each participant in the treatment group is compared to participants in the control group.
Intersubject variability can be large, and differences between treatment and control groups may be attributed to differences in these individual characteristics.
However, in a repeated-measures design, each participant served as its own control, reducing inter-subject variability.
This makes it easier to recognize differences in treatment conditions and can increase effect sizes.
Therefore, a repeated measures study may require fewer subjects to achieve the same statistical power as a matched subjects study with the same number of outcomes.
However, it is important to note that repeated measures designs may have their own limitations: Potential Order Effect or Practice Effect.
These limitations should be carefully considered when designing a study, and an appropriate design should be chosen based on the research question and the nature of the data.
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Alguien sabe la respuesta?
According to the triangle:- perpendicular (p) = 8√3
hypotenuse (h) = x
\( \sec(60) = \frac{p}{h} \)
\( \frac{8 \sqrt{3} }{x} = \sin(60) \\ \frac{8 \sqrt{3} }{x} = \frac{ \sqrt{3} }{2} \\ 2\times 8 \cancel{ \sqrt{3} } = x \times \cancel{ \sqrt{3} } \\ 2 \times 8 = 16 = x = hypotenuse\)
Your Answer :- hypotenuse = X = 16
Ratios Digital Escape! puzzle 2
Explain more please cause i dont understand
Cassandra has a tangler panto in her backyard the panto is 12.74 m long and 5.45 m wide round the length and width to the nearest whole number then estimate the perimeter of cassandra is panto write an equation to show your work
The perimeter measures around 36 metre.
Describe a perimeter?The perimeter refers to the area surrounding an object. For instance, your house has a fenced-in yard. The perimeter is the length of the fence. If the yard is 50 feet by 50 feet, your fence is 200 feet long.
While 12.74 rounds up to 13, 5.45 rounds down to 5. Recatangle created a total of four sides, two of which are identical in length to the other two (which is a poor way to explain it). There are two sides that are 13 inches long and two sides that are 5 inches long, which is the solution to this question. When added together, the perimeter would be 13+13+5+5.
As an expression,
2(13)+2(5)
=26+10
=36.
The perimeter is approximately 36 meters.
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Which of the following measures can be determined by analyzing a dot plot? Select all that apply.rangemeanmodemedian
Given the following question:
First we have the answer the question what is a dot plot?
A dot plot is a number line with points over specific numbers to show a data set. Range, mean, mode, and median are all different numbers. Which means a dot plot can be a place for all of the options. Mean being the final average of a data set. Range being the smallest to largest or the difference between the smallest and largest data set. Mode being the value that appears the most in a data set. Median being the value that seperates the lower half from the higher half.
Your answer is range, mean, mode, and median.
After 4 years, $20,000 deposited in a savings account with simple interest had earned $800 in interest. What was the interest rate?
The interest rate for the savings account is 5% after 4 years, $20,000 deposited in a savings account with simple interest earned $800 in interest.
We can use the formula for simple interest to solve the problem:
Simple interest = (Principal * Rate * Time) / 100
where Principal is the initial amount deposited, Rate is the interest rate, and Time is the time period for which the interest is calculated.
We know that the Principal is $20,000 and the time period is 4 years. We are also given that the interest earned is $800. So we can plug in these values and solve for the interest rate:
$800 = (20,000 * Rate * 4) / 100
Multiplying both sides by 100 and dividing by 20,000 * 4, we get:
Rate = $800 / (20,000 * 4 / 100) = 0.05 or 5%
Therefore, the interest rate for the savings account is 5%.
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the area of an equilateral triangle with Side 2 cm is
Answer:
Here side(a) = 2 cm. = (√3/4) (2)². = (√3/4) x (2) x (2). = (√3). = √3 cm².
Step-by-step explanation:
A = √3 cm²
Step-by-step explanation:Hi there !
use formula for area of equilateral triangle
\(A=\frac{s^{2} \sqrt{3}}{4}\)
s = side
A = (2cm)²√3/4
= 4√3cm²/4
= √3 cm²
Good luck !
The center of a circle is at (10, -4) and its radius is 11.
What is the equation of the circle?
(x-10)² + (y + 4)² = 11
O (x-10)² + (y + 4)² = 121
(x + 10)² + (y - 4)² = 11
O (x + 10)² + (y - 4)² = 121
Answer:
(x - 10)² + (y + 4)² = 121
Step-by-step explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r is the radius
here (h, k ) = (10, - 4 ) and r = 11 , then
(x - 10)² + (y - (- 4) )² = 11² , that is
(x - 10)² + (y + 4)² = 121
If YZ is the requested side and XZ is the given side, which ratio amongst sin 35,3° or cos 35,5° will be used to calculate YZ
The answer of the given question based on the trigonometry is , to calculate YZ, we should use the cosine function with the angle 35.5°.
What is Sine function?The sine function is a mathematical function that relates the ratios of the lengths of two sides of a right triangle with the measure of one of its non-right angles. Specifically, the sine of an angle in a right triangle is defined as the ratio of the length of the side opposite to the angle to the length of the hypotenuse.
To use trigonometry to calculate YZ, we need to find a trigonometric ratio that involves the given side XZ and the angle opposite the requested side, which is angle YXZ. We don't have the measure of this angle, but we know that it is supplementary to the given angle 35.5°, so it must measure:
180° - 35.5° = 144.5°
We can use this angle and the given side XZ to find the length of YZ using the sine or cosine function.
In this case, the length of the opposite side is YZ, the length of the hypotenuse is XZ, and the measure of the angle is 144.5°. So we can write:
sin(144.5°) = YZ / XZ
Solving for YZ, we get:
YZ = XZ * sin(144.5°)
On the other hand, the cosine function , this case, the length of the adjacent side is YZ, the length of the hypotenuse is XZ, and the measure of the angle is 35.5°. So we can write:
cos(35.5°) = YZ / XZ
Solving for YZ, we get:
YZ = XZ * cos(35.5°)
Therefore, to calculate YZ, we should use the cosine function with the angle 35.5°.
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Slope help please it is supposed to be easy
Look at the coordinates, y=4 in that coodinate meaning it is the y=intercept.
The slope u already know,
The formula for equation --> Y=mx+b
Answer: Y=3/4+4
Given the expression-1/2(4x-6) +2 (x2-5x+5) complete the instructions below
A)Simplify the expression
B) identify the terms , factors , coefficients and constants of the simpler expressions
Terms
Factors
Coefficients
Constants
Please I’ll mark you as a brainliest
Answer:
A) 2x^2 -12x +13
B) terms {2x^2, -12x, 13}; coefficients {2, -12, 13}; constants {13}
Step-by-step explanation:
A) Using the distributive property, we get ...
-2x +3 +2x^2 -10x +10
= 2x^2 -12x +13
__
B) Terms: {2x^2, -12x, 13}
Factors: There are no overall factors. Each term has factors ...
2x^2 has factors {2, x, x}
-12x has factors {-1, 2, 2, 3, x}
13 has factors {1, 13} (it is prime)
Coefficients: {2, -12, 13} . . . see note below
Constants: {13}
_____
Additional comment
We have listed the prime factors of each term, any subset can be multiplied to be a factor of the term. For example, 2·3 = 6 is a factor of -12x.
Please note that some sources do not consider a constant (13) to be a coefficient. You will need to refer to your curriculum materials to see what your author says about that.
Solve the equation -15=8z+7.
z=
Answer:Hello the Answer to your math problem is attached
Step-by-step explanation:
bill paid $35.99 in tax on a laptop that cost $449.99. about what percent sales tax did bill pay
Answer:
Bill paid about 7% sales tax.
Step-by-step explanation:
First, to find the value of 1%, I divided $449.99 by 100, which gave me 4.4999. I then divided the amount paid for tax by the value of 1%. That;s $35.99 ÷ $4.4999 = 7.199439887977596. Obviously, you can't put that in your math homework, plus the question says "about," so you're going to round. Because the first number after the decimal point is less than five, you round down. Therefore, the sales tax is about 7%.
Solve the equation
6.4g + 8= 1.4g + 38
Find the Value of G
Explain how you can check that the value you found for g is correct. If your check does not work, does that mean that your result is incorrect? Explain.
Answer:
g=6
Step-by-step explanation:
6.4×6-1.4×6=
38.4-8.4=30
its true if it is not the result is incorrect
This is the architectural plan for a fenced-in garden.
The shaded region represents an area for trees.
How long is the fence around the edge of the garden?
(Do not include the edge around the tree region.)
The length of the fence that goes round the edge of the garden that has a shape of a quadrant of a circle of radius 5 meters is approximately 17.85 meters.
What is the length of the curved perimeter of a quadrant of a circle?The length of the curved perimeter of a quadrant of a circle is one quarter the circumference of a circle.
The area represented by the garden, obtained from a similar online question is a quadrant of a circle of radius 5 meters.
The perimeter of the garden is given by the sum of the curved surface of the quadrant of the circle of radius 5 meters and two radii as follows;
The length, l, of the quarter circle is given by the formula; l = 0.25×2·π·r
Which gives;
l = 0.25 × 2 × π × 5 = 2.5·π
The length of the two radii = 2 × 5 m = 10 m
The perimeter of the fence is therefore; P = l + 10
Which gives; P = 2.5·π + 10 ≈ 17.85
The length of the fence around the edge of the garden is approximately 17.85 meters
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In 2020, a total of 9559 Nissan Leafs were sold in the US. For the 12-month period starting January 2020 and ending December 2020, the detailed sales numbers are as follows: 651, 808, 514, 174, 435, 426, 687, 582, 662, 1551, 1295 and 1774 units.
before the Nissan plant in Smyrna, Tennessee, started to produce the Nissan Leaf they were imported from Japan. Although cars are now assembled in the US, some components still imported from Japan. Assume that the lead time from Japan is one weeks for shipping. Recall that the critical electrode material is imported from Japan. Each battery pack consists of 48 modules and each module contains four cells, for a total of 192 cells. Assume that each "unit" (= the amount required for an individual cell in the battery pack) has a value of $3 and an associated carrying cost of 30%. Moreover, assume that Nissan is responsible for holding the inventory since the units are shipped from Japan. We suppose that placing an order costs $500. Assume that Nissan wants to provide a 99.9% service level for its assembly plant because any missing components will force the assembly lines to come to a halt. Use the 2020 demand observations to estimate the annual demand distribution assuming demand for Nissan Leafs is normally distributed. For simplicity, assume there are 360 days per year, 30 days per month, and 7 days per week.
(a) What is the optimal order quantity?
(b) What is the approximate time between orders?
(a)The optimal order quantity is 4609 units.
(b)The time between orders is 1.98 months.
To determine the optimal order quantity and the approximate time between orders, the Economic Order Quantity (EOQ) model. The EOQ model minimizes the total cost of inventory by balancing ordering costs and carrying costs.
Optimal Order Quantity:
The formula for the EOQ is given by:
EOQ = √[(2DS) / H]
Where:
D = Annual demand
S = Cost per order
H = Holding cost per unit per year
calculate the annual demand (D) using the 2020
sales numbers provided:
D = 651 + 808 + 514 + 174 + 435 + 426 + 687 + 582 + 662 + 1551 + 1295 + 1774
= 9559 units
To calculate the cost per order (S) and the holding cost per unit per year (H).
The cost per order (S) is given as $500.
The holding cost per unit per year (H) calculated as follows:
H = Carrying cost percentage × Unit value
= 0.30 × $3
= $0.90
substitute these values into the EOQ formula:
EOQ = √[(2 × 9559 × $500) / $0.90]
= √[19118000 / $0.90]
≈ √21242222.22
≈ 4608.71
Approximate Time Between Orders:
To calculate the approximate time between orders, we'll divide the total number of working days in a year by the number of orders per year.
Assuming 360 days in a year and a lead time of 1 week (7 days) for shipping, we have:
Working days in a year = 360 - 7 = 353 days
Approximate time between orders = Working days in a year / Number of orders per year
= 353 / (9559 / 4609)
= 0.165 years
Converting this time to months:
Approximate time between orders (months) = 0.165 × 12
= 1.98 months
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Tisha wants to plant a garden in the widest corner of her triangular backyard. The backyard is bordered by
the back of the house that is 50 feet long, fence A that is 27 feet long, and fence B that is 35 feet long. Which corner has the widest measure?
Answer:
in think it's fence b okm
Oliver borrowed $1,500 to purchase a riding lawn mower for his lawn care business. The bank offered him an interest rate of 12% for 6 months. Calculate the simple interest using I = prt.
A: $69
B: $90
C: $420
D: $1,080
Oliver has to pay an amount of B: $90 with simple interest.
What is simple interest?We know simple interest (SI) is given by SI = (p×r×t)/100, where
p = principle, r = rate in percentage, and t = time in years.
Given, Oliver borrowed $1,500 to purchase a riding lawn mower for his lawn care business.
The bank offered him an interest rate of 12% for 6 months.
P = $1500, r= 12% and t = 6 months or 1/2 or 0.5 years.
∴ SI = (1500×12×0.5)/100.
SI = 15×6.
SI = $90.
The amount of simple interest Oliver has to pay is $90.
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what is the indentation diagonal length when a load of 0.700 kg produces a vickers hv of 650?
The Vickers hardness (HV) test calculates indentation diagonal length (d) when a load is applied to a material.
To determine d when a 0.700 kg load produces a Vickers HV of 650, use the formula: HV = 1.8544 * (F/d^2), where F is the force in Newtons (N) and d is in mm.
First, convert the load to Newtons: F = 0.700 kg * 9.81 m/s^2 ≈ 6.867 N. Next, rearrange the formula for d: d = √(1.8544 * F/HV). Substituting values: d = √(1.8544 * 6.867 N / 650) ≈ 0.044 mm.
So, the indentation diagonal length (d) is approximately 0.044 mm when a 0.700 kg load produces a Vickers HV of 650.
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PLEASE HELP
A random sample of 50 purchases from a particular pharmacy was taken. The type of item purchased was recorded, and a table of the data was created.
Item Purchased Health & Medicine Beauty Household Grocery
Number of Purchases 10 18 15 7
Which graphical representation would be best to display the data?
Box plot
Line plot
Histogram
Stem-and-leaf plot
The graphical representation that would be best to display the data is given as follows:
Histogram.
What is an histogram?An histogram is a graph that shows the number of times each element of x was observed.
The four types of products are given as follows:
Health and Medicine.Beauty.Household.Grocery.Each of these item would represent a bin, and the values of each bin are given as follows:
Health and Medicine: 10.Beauty: 18.Household: 15.Grocery: 7.More can be learned about histograms at brainly.com/question/25983327
-4^2-17×-4-76 pleaseeee helppppp
Answer:
-24
Step-by-step explanation:
it was hard but i got it first i did the the times and the
Answer:
8
Step-by-step explanation:
Use PEDMAS.
(-4)² - 17*(-4) - 76 = 16 - 17*(-4) - 76 {Exponents}
= 16 + 68 - 76 {Multiplication}
= 84 - 76 {Addition}
= 8 {Subtraction}
At the local market Gina bought 2 pounds of apples and a pound of oranges for a total of $5.00. Tom bought 4 pounds of apples and a pound of oranges for a total of $8.00. How much does a pound of apples and a pound of oranges cost each?
A pound of apples and a pound of oranges each cost $2.50.
What is pound?Pound is a unit of weight or mass commonly used in the imperial system of measurement. It is equal to 0.453 kilograms and 16 ounces. It is also known as the avoirdupois pound, which is the most commonly used today. In some contexts, the term "pound" may also refer to a unit of currency, the British Pound Sterling (GBP).
This can be determined by subtracting Gina's total cost from Tom's total cost.
Tom's cost was $8.00, and Gina's cost was $5.00, so 8.00 - 5.00 = 3.00. Since Tom bought 3 pounds of apples more than Gina and the same amount of oranges, the cost of the extra apples is $3.00.
Since each pound of apples and oranges costs the same amount,
then $3.00 divided by 3 pounds is $1.00,
so each pound of apples and oranges costs $2.50.
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Evaluate.
(-5)5
Enter your answer in the box.
Answer:
The answer is -25
Answer: