Matching Equivalent Expressions
Quick
Check
Match each addition expression on the left with an equivalent expression on the right.
15 + 9
2(3 + 2)
8 + 10
2(5+6)
6 + 4
3(5 + 3)
10 + 12
2(4+5)
Answers
Answer:
15+9 is 3(5+3)
8+10 is 2(4+5)
6+4 is 2(3+2)
10+12 is 2(5+6)
Related Questions
Solve the equation.
-6p=48
Answers
Answer:
p=-8
Step-by-step explanation:
A negative multiplied by a negative is a positive.
IS THIS RIGHT? (28 points easy!!)
Answers
Step-by-step explanation:
yes, the step is correct.
a² = cx | multiply by c
ca² = c²x
I am just not sure how that simplified the equation.
what do you want to achieve ? what's the goal here ?
to solve the equation for x it would be to divide both sides by c, which gives
a²/c = x
please i need help rn
Answers
Answer:
here u go
Step-by-step explanation:
16 /5 =3 and 1 over 53 1 /5=3.2
giving brainliest! <3
Find the total surface area of the cylinder below. Round to the nearest tenths place.
Answers
Answer:
Step-by-step explanation:
r = 0.9 m
h = 3.6 m
Area of two circle faces combined: 2*π(0.9)^2 = 1.62π
Lateral area = circumference*height = 2π(0.9)(3.6) = 6.48π
Surface Area = 1.62π + 6.48π = 8.1π m sq.
17 The table below shows the distance a car has traveled.
50
20
f
40
Minutes
Distance
Traveled
(in miles)
What is the meaning of the slope of the linear model for the data?
60
100
a) The car travels 5 miles every minute.
b) The car travels 4 miles every minute.
c) The car travels 4 miles every 5 minutes.
d) The car travels 5 miles every 4 minutes.
125
80
100
Answers
Given statement solution is :- None of the given options (a, b, c, or d) match the meaning of the slope. The correct interpretation is that the car travels approximately 0.8 miles every minute.
To determine the meaning of the slope of the linear model for the given data, let's analyze the information provided. The table represents the distance traveled by a car at different time intervals.
Minutes | Distance Traveled (in miles)
50 | 20
20 | f
40 | 60
100 | a
125 | 80
100 | 100
To find the slope of the linear model, we need to calculate the change in distance divided by the change in time. Let's consider the intervals where the time changes by a fixed amount:
Between 50 minutes and 20 minutes: The distance changes from 20 miles to 'f' miles. We don't have the exact value of 'f', so we can't calculate the slope for this interval.
Between 20 minutes and 40 minutes: The distance changes from 'f' miles to 60 miles. Again, without knowing the value of 'f', we can't calculate the slope for this interval.
Between 40 minutes and 100 minutes: The distance changes from 60 miles to 'a' miles. We don't have the exact value of 'a', so we can't calculate the slope for this interval.
Between 100 minutes and 125 minutes: The distance changes from 'a' miles to 80 miles. Since we still don't have the exact value of 'a', we can't calculate the slope for this interval.
Between 125 minutes and 100 minutes: The distance changes from 80 miles to 100 miles. The time interval is 25 minutes, and the distance change is 100 - 80 = 20 miles.
Therefore, based on the given data, we can conclude that the car travels 20 miles in 25 minutes. To determine the meaning of the slope, we divide the distance change by the time change:
Slope = Distance Change / Time Change
= 20 miles / 25 minutes
= 0.8 miles per minute
So, none of the given options (a, b, c, or d) match the meaning of the slope. The correct interpretation is that the car travels approximately 0.8 miles every minute.
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Please help and answer ASAP please will mark Brainlest
What is the value for x?
Enter your answer in the box.
x =
Answers
Answer:
x=45
Step-by-step explanation:
i hope its right good luck :)
i think im wrong
Imagine that the price per gallon of gas with a $7 car wash is $3.32 and the price without a car wash is $3.52 When is it worth it to buy the car wash? When is it worth it if the car wash cost $4
Answers
Answer: b and d
Step-by-step explanation:it IS
who would make the most money in one week? a sales manager work ing 35 hours $28.75x35= or a head mechanic working 25 hours, or an assistant mrchanic working 30 hours, or a front desk clerk working 40 hhours? Id like to see the problem worked in steps, please.
Answers
Answer: The sales manager, with weekly earnings of $1006.25.
Step-by-step explanation:
To determine who would make the most money in one week, we need to calculate the weekly earnings for each of the four positions.
Let's start with the sales manager, who works 35 hours at a rate of $28.75 per hour:
Weekly earnings for sales manager = 35 hours x $28.75 per hour = $1006.25
Next, let's consider the head mechanic, who works 25 hours. We'll need to know their hourly rate in order to calculate their weekly earnings:
Hourly rate for head mechanic = $35 per hour
Weekly earnings for head mechanic = 25 hours x $35 per hour = $875
Now, let's move on to the assistant mechanic, who works 30 hours:
Hourly rate for assistant mechanic = $20 per hour
Weekly earnings for assistant mechanic = 30 hours x $20 per hour = $600
Finally, let's consider the front desk clerk, who works 40 hours:
Hourly rate for front desk clerk = $15 per hour
Weekly earnings for front desk clerk = 40 hours x $15 per hour = $600
Therefore, the sales manager would make the most money in one week with weekly earnings of $1006.25.
Answer: Sales Manager
Step-by-step explanation:
Let's calculate the total pay for each worker:
Sales manager: $28.75 per hour x 35 hours = $1,006.25
Head mechanic: $32.50 per hour x 25 hours = $812.50
Assistant mechanic: $25.00 per hour x 30 hours = $750.00
Front desk clerk: $20.00 per hour x 40 hours = $800.00
Are figures A and B congruent?
Figure A
Figure B
Yes or no
Answers
Answer: No
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
They don't have the same size.
Analyze the diagram below and complete the instructions that follow.
42
40
A
Find the unknown side length, x. Write your answer in simplest radical form.
A. 2√√41
B. 4√√29
C. 48
D. 58
Mark this and return
Save and Exit
Next
Submit
Answers
The length of unknown side x is 58.
The correct answer is option D.
To find the unknown side length, x, in a right triangle with the base measuring 42 and the perpendicular measuring 40, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Let x be the hypotenuse. Applying the Pythagorean theorem, we have:
\(x^2 = 42^2 + 40^2\)
Simplifying:
\(x^2\) = 1764 + 1600
\(x^2\)= 3364
Taking the square root of both sides to solve for x:
x = \(\sqrt{3364}\)
Simplifying the square root:
x = (\(\sqrt{4 * 841)}\)
Since 841 is a perfect square (\(29^2\)), we can further simplify:
x = 2 * 29
x = 58
Therefore, the unknown side length, x, is equal to 58.
From the options provided the correct option is D.
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Deon bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $300 more than the desktop. He paid for the computers using two different financing plans. For the desktop the interest rate was 6% per year, and for the laptop it was 7% per year. The total finance charges for one year were $398. How much did each computer cost before finance charges?
Answers
Answer:
i think
Desktop: $2900.00, Laptop: $3200.00
Step-by-step explanation:
X 8.2.79
Question Help
A dietitian at a hospital wants a patient to have a meal that has 64 grams of protein, 29 grams of carbohydrates, and 72.5 milligrams of vitamin A The hospital food
service tells the dietitian that the dinner for today is salmon steak, baked eggs, and acorn squash. Each serving of salmon steak has 40 grams of protein, 10 grams
carbohydrates, and 1 milligram of vitamin A. Each serving of baked eggs contains 20 grams of protein, 2 grams of carbohydrates, and 20 miligrams of vitamin A
Each serving of acom squash contains 4 grams of protein, 20 grams of carbohydrates, and 32 milligrams of vitamin A How many servings of each food should the
dietitian provide for the patient?
Answers
Answer:
steak: 1/2baked eggs: 2acorn squash: 1Step-by-step explanation:
Let s, b, a represent the numbers of servings of steak, baked eggs, and acorn squash, respectively. Then the equations we want to solve are ...
40s +20b +4a = 64 . . . . grams of protein
10s +2b +20a = 29 . . . . grams of carbohydrate
1s +20b +32a = 72.5 . . . milligrams of vitamin A
There are any number of calculators or web sites that will solve this system of equations for you. The solution is ...
s = 0.5
b = 2
a = 1
The dietitian should provide 1/2 serving of steak, 2 servings of baked eggs, and 1 serving of acorn squash.
Select the most specific name for the quadrilateral shown.
O parallelogram
O rhombus
O rectangle
square
Answers
Answer:
Square
Step-by-step explanation:
square - (geometry) a plane rectangle with four equal sides and four right angles
fill the table using this function rule
y=-10x+3
Answers
Answer:
53, 13, 3, -7
Step-by-step explanation:
When x = -5,
y = -10(-5) + 3
= 50 +3
= 53
When x = -1,
y = -10(-1) + 3
= -10 + 3
= 13
When x = 0,
y = 3
When x = 1,
y = -10(1) + 3
= -7
Hope this helps.. Feel free to mark this as brainliest! :D
Error Analysis deena says that 2.78778777 is a rational number. Elijah disagrees and says the number is irrational. Decide who is correct and what might likely cause one of them to make the error.
Who is correct? What might likely cause one of them to make the error?
A.
Both deena and elijah are correct. Numbers like this one are both rational and irrational.
B.
elijah is correct. deena may see 2.78778777 as showing a repeating pattern.
C.
deena is correct. elijah may see 2.78778777 as not a repeating pattern .
D.
Neither is correct. The number cannot be classified as rational or irrational.
Answers
Answer:
the answer is B.
Step-by-step explanation:
2.78778777 is an irrational number because it has endless numbers, and a irrational number can't be put as a fraction like rational numbers can.
hope this helps! sorry if i am incorrect! best of luck!! <3
(1) Complete the number sequences.
(a) 0.4, 0.2, 0.6, 0.4, 1.2, 1.0, 3.0,
Answers
The next three numbers of sequence is,
⇒ 2.8, 8.4, 8.2
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
The sequence is,
⇒ 0.4, 0.2, 0.6, 0.4, 1.2, 1.0, 3.0, .., .., ...,
Now,
Since, The sequence is,
⇒ 0.4, 0.2, 0.6, 0.4, 1.2, 1.0, 3.0, .., .., ...,
Clearly, The pattern of the sequence is,
⇒ 0.4 - 0.2 = 0.2
⇒ 0.2 × 3 = 0.6
⇒ 0.6 - 0.2 - 0.4
⇒ 0.4 × 3 = 1.2
⇒ 1.2 - 0.2 = 1.0
⇒ 1.0 × 3 = 3.0
⇒ 3.0 - 0.2 = 2.8
⇒ 2.8 × 3 = 8.4
⇒ 8.4 - 0.2 = 8.2
Thus, Next three terms of the sequence is,
⇒ 2.8, 8.4, 8.2
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you will have amazing luck if you help me
Answers
Answer:
b
Step-by-step explanation:
because of the value of the area
b is the answer
Express x²- 8x + 5 in the form (x - a)² - b where a and b are integers.
Answers
The expression will be;
⇒ (x- 4)² - 11
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The expression is,
⇒ x² - 8x + 5
Now,
Solve the expression as;
⇒ x² - 8x + 5
⇒ x² - 8x + 16 - 16 + 5
⇒ (x- 4)² - 11
Thus, The value of the expression = (x- 4)² - 11
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I need help! Can you help me pls?
Answers
Answer:
The first one
Step-by-step explanation: the ABC triangle has a 25-degree angle and a 90-degree angle as you can see by the marks. The first triangle has a 25-degree angle and a 90-degree angle as you can see by the marks. The second one does have a 90-degree angle but it's a different shape and has no 25-degree angle. The third one has both angles 25 and 90 but if you look close it's a different shape. The last one does not have a 90-degree angle but it does have a 25-degree angle and it's a different shape.
So it would be the first option.
Gus help me with this one what is 2x9 please hlep ne on this test
Answers
Answer:
18
Step-by-step explanation:
Answer:
here you go
2×9=18
hope this helps
solve each rational equation. list excluded values
x+4/x+5=6/x^2+10+25
Answers
x+4/x+5=6/x^2+10x+25
We will begin by first finding the LCD (Least Common Denominator) which is:
(x+5)(x+5)= (x+5)^2
Multiplying both sides of the equation by the LCD, we get:
(x+4)(x+5)(x+5) = 6(x+5)^2
Expanding both sides of the equation and simplifying further, we get:
x^3 + 14x^2 + 61x + 80 =0
Now, we can use the rational root theorem to identify the possible rational roots of the polynomial equation. The possible rational roots are:
±1, ±2, ±4, ±5, ±8, ±10, ±20, ±40, ±80
Testing these rational roots, we get that x = -4 is a root of the polynomial. Using synthetic division, we can then factor the polynomial as:
(x+4)(x^2 + 10x + 20) = 0
This gives us the solutions:
x = -4, x = -5 + 3sqrt(2)i and x = -5 - 3sqrt(2)i
Therefore, the excluded values are x = -5 and x = -5 ± sqrt(2)i.
The graph below displays a fire department’s response time, which measures the time from when the alarm is sounded at the firehouse to the time the first fire engine leaves the station.
A histogram titled Fire Department Response Times has response time (seconds) on the x-axis and relative frequency on the y-axis. 20 to 30, 0.07; 30 to 40, 0.08; 40 to 50, 0.2; 50 to 60, 0.32; 60 to 70, 0.18; 70 to 80, 0.13; 80 to 90, 0.04.
Which interval accounts for the lowest percentage of response times?
20–30 seconds
30–40 seconds
70–80 seconds
80–90 seconds
I think its (D), 80-90 seconds. Someone check me.
Answers
Answer:
I also think this is D.
Step-by-step explanation:
This question isn't asking for a lot of math so.
According to the graph, the 80-90 seconds response times are the shortest, meaning it is the least frequent or common.
Plus, it would be a bad thing if it was average anyways, and is outlined by the histogram.
A cheetah was racing a gazelle and a lion. For every 52 of a
mile the cheetah ran, the gazelle ran 16 of a mile and the lion
ran 34 of a mile. If the cheetah ran 20 miles miles, how many
miles did the gazelle and lion run?
Answers
Answer:
Step-by-step explanation:
Three times eight M equals fourteen. Which of the following equations represents this statement?
Answers
Answer:
3x8m= 14 is the equation that matches the description.
Step-by-step explanation:
It is simply the number three, multiplied by eight with the variable m, and is equal to the number 14.
What is the equation in slope-intercept form of the line that passes through the points (-4.2) and (12, 6)? (2 points)
Answers
Answer: that's hard
Step-by-step explanation:that's hard
What is the y-intercept of the line that passes through the points (-11,17) and (17, 6)?
Round your answer to 1 decimal place.
Answers
Point-slope equation for line of slope -11/28 that passes through (-12, 1):
y-1 = (-11/28)(x+12)
y = (-11/28)x - 27/7
y-intercept = -27/7
Find the mean, median, mode 1. 40, 38,29,34,37, 22, 15, 38 2. 26, 32, 12, 18, 11, 14, 21, 12,27 3. 3,3,4,7,5,7,6,7,8,8,8. 9,8, 10, 12, 9, 15, 15
NEED THE ANSWER ASAP
NONSENSE, REPORT
i will (brainliest) if it's correct!!!
Answers
Mean: 34.125, Median: 31.5, Mode: 38
Mean: 19.222, Median: 18, No mode
Mean: 8.611, Median: 8, Mode: 8
Let's find the mean, median, and mode for each set of numbers:
Set: 40, 38, 29, 34, 37, 22, 15, 38
Mean: To find the mean, we sum up all the numbers and divide by the total count:
Mean = (40 + 38 + 29 + 34 + 37 + 22 + 15 + 38) / 8 = 273 / 8 = 34.125
Median: To find the median, we arrange the numbers in ascending order and find the middle value:
Arranged set: 15, 22, 29, 34, 37, 38, 38, 40
Median = (29 + 34) / 2 = 63 / 2 = 31.5
Mode: The mode is the number(s) that appear(s) most frequently in the set:
Mode = 38 (appears twice)
Set: 26, 32, 12, 18, 11, 14, 21, 12, 27
Mean: Mean = (26 + 32 + 12 + 18 + 11 + 14 + 21 + 12 + 27) / 9 = 173 / 9 ≈ 19.222
Median: Arranged set: 11, 12, 12, 14, 18, 21, 26, 27, 32
Median = 18
Mode: No mode (all numbers appear only once)
Set: 3, 3, 4, 7, 5, 7, 6, 7, 8, 8, 8, 9, 8, 10, 12, 9, 15, 15
Mean: Mean = (3 + 3 + 4 + 7 + 5 + 7 + 6 + 7 + 8 + 8 + 8 + 9 + 8 + 10 + 12 + 9 + 15 + 15) / 18 ≈ 8.611
Median: Arranged set: 3, 3, 4, 5, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 10, 12, 15, 15
Median = 8
Mode: Mode = 8 (appears 4 times)
Mean: 34.125, Median: 31.5, Mode: 38
Mean: 19.222, Median: 18, No mode
Mean: 8.611, Median: 8, Mode: 8
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A real estate agent would like to develop a model for predicting sale price of homes in a suburban area. One variable that can be useful for predicting home value is home interior size, which is measured in square feet. Using 13 homes sold recently in the area, the real estate agent uses software to find a least-square line to summarize the relationship. The resulting equation is sale price hat = 0.152 (size) minus 32.84. A graph titled home price versus home size (square feet) has home size (Square feet) on the x-axis, and home price (thousands of dollars) on the y-axis. Points increase in a line with positive slope. A graph titled residuals versus home size (square feet) has home size (square feet) on the x-axis, and residual on the y-axis. Points are scattered throughout the graph. Based on the scatterplot and residual plot shown, is a linear model appropriate for summarizing the relationship? A linear model is appropriate because the residual plot shows no pattern. A linear model is appropriate because the mean of the residuals appears close to zero. A linear model is not appropriate because there are potential outliers in the residual plot. A linear model is not appropriate because of the random scatter of points in the residual plot.
Answers
Based on the information provided, a linear model is not appropriate for summarizing the relationship between home size and sale price because of the random scatter of points in the residual plot. In a linear model, the residuals should be randomly distributed around a mean of zero, without any discernible pattern. However, the residual plot shown in the question indicates that the residuals are randomly scattered throughout the graph, which suggests that a linear model may not be the best way to summarize the relationship between the variables. Therefore, a linear model is not appropriate for this data.
Answer:
Not Appropriate
Step-by-step explanation:
Based on the information provided in the problem, it appears that a linear model is not appropriate for summarizing the relationship between home size and sale price. This is because the residual plot shows a random scatter of points, which suggests that there is not a strong linear relationship between these variables. Furthermore, the scatterplot of home price versus home size shows a line with a positive slope, which indicates that there is some relationship between these variables, but it is not necessarily a linear relationship. In this situation, it would be more appropriate to use a non-linear model to summarize the relationship between home size and sale price.
Ricardo planea comprar una pantalla plana que cuesta 18,485 pesos por el momento sólo tiene 9597 cuánto dinero le falta
Answers
La cantidad de dinero que le falta a Ricardo es 8,888 pesos.
¿Cuanto dinero le falta para comprar la pantalla plana?Sabemos que Ricardo planea comprar una pantalla plana que cuesta 18,485 pesos por el momento sólo tiene 9,597 pesos, y queremos ver cuanto dinero le falta.
Para ver esto, debemos tomar la diferencia entre el valor de la pantalla plana y la cantidad de dinero que Ricardo tiene, entonces tendremos:
18,485 pesos - 9,597 pesos = 8,888 pesos.
Entonces concluimos que Ricardo necesita 8,888 pesos para la pantalla plana.
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if the orginal quantity is 15 and the new quantity is 19 estimate the percent change of which of these is the best esitmate for the percet change
A. 25% DECREASE
B. 5% DECREASE
C 25% INCREASE
D 5% INCREASE
Answers
Answer:
The awnser should be 5% increase or D
Step-by-step explanation:
This should be the awnser because we know that 15 to 19 is a increase. And next 25% increase is way too much, so 5% should be it.