I need help with integers the problems:-12+9-6+-15-9×8-48÷-4-18-412-(-4)-10×-9-77÷7-4 (8)
Answers
-12+9 = -3
-6+-15 = -21
-9×8 = - 72
-48÷-4 = 12
-18-4 = -22
12-(-4) = 12 + 4 = 16
-10×-9 = + 90
-77÷7 = -1 1
-4 (8) = -32
Related Questions
you bought shares for $400 but made a loss of 20% when you sold them.
how much did you lose?
Answers
Answer:
$80
Step-by-step explanation:
If you bought shares for $400 and made a loss of 20% when you sold them, then you lost 20% of $400, which is:
$400 x 0.20 = $80
So you lost $80 when you sold the shares.
Therefore, the amount you sold the shares for would be:
$400 - $80 = $320.
Answer:320
Step-by-step explanation 20% = 1/5 so you subtract one fifth of 400 which is 80 to get 320
A coin is tossed twice. Let
E
be the event "the first toss shows heads" and
F
the event "the second toss shows heads".
(a) Are the events
E
and
F
independent?
Input Yes or No:
(b) Find the probability of showing heads on both tosses. Write your answer as a reduced fraction.
Answer:
Answers
Answer:
(a) Yes, E and F are independent events.
(b) P(E and F) = P(E)P(F) = (1/2)(1/2) = 1/4
Joe is asked to prove that the sum of the interior angles (, , and ) of the triangle he has drawn equals 180°. His triangle is represented in the diagram above, and his work is shown below.
Answers
The angles <1, <2, and <3 will not add up to 180 degrees. The angles <1 and <2 are alternate interior angles, and the angles <2 and <3 are also alternate interior angles, AB is parallel to CD.
What is angle sum property of triangle?The angle sum property of a triangle states that the sum of the interior angles of a triangle is always equal to 180 degrees. This means that if you measure the angles inside any triangle and add them up, the result will always be 180 degrees. This property holds true for all types of triangles, whether they are equilateral, isosceles, or scalene.
To understand this property, consider a triangle ABC with interior angles angle A, angle B, and angle C. If we draw a line segment from vertex A to a point D on side BC such that it is parallel to the side AB, then we can see that angle A and angle C are alternate interior angles of the parallel lines AB and CD. Similarly, angle B and angle C are alternate interior angles of the parallel lines BC and AD.
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Five times the sum of a number and -23.
Answers
Hi student, let me help you out! :)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
We need to translate "five times the sum of a number and -23" into an algebraic expression.
\(\triangle~\fbox{\bf{KEY:}}\)
Can you see the word "sum" there? It tells us to add.So in this case we should add a number (let it be x) and -23:
\(\star~\large\pmb{x+-23}\)
Which is the same thing as
\(\star~\large\pmb{x-23}\)
Now we multiply this little expression by 5, which gives us
\(\star~\large\pmb{5(x-23)}\)
The parentheses around the expression indicate that we multiply 5 by the entire expression, and not just one term.
Hope it helps you out! :D
Ask in comments if any queries arise.
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~Just a smiley person helping fellow students :)
pls help and explain how you got the answer
Answers
The class of the equation and the cross section equation are;
The equation is a hyperboloid of two sheets
The cross sections are;
Equation at z = 0 is; y²/8 - x²/8 = 1
Equation at y = -4 is; x²/8 + z² = 1
Equation at y = 0 is; x²/8 + z² = -1
Equation at y = 4 is; x²/8 + z² = 1
Equation at x = 0 is; y²/8 - z² = 1
What is an equation ?An equation is a mathematical statement which indicates the equivalence two expressions by joining them with the '=' sign.
The equation can be presented as follows;
y² = x² + 8·z² + 8
y² - x² - 8·z² = 8
y²/8 - x²/8 - z² = 1
The above equation is the equation of an hyperboloid of two sheets, where;
a² = 8, b² = 1, and c² = 8
Please find attached the diagram of the surface, created with an online 3D graphing tool.
The equation for the cross section at z = 0, can be obtained by plugging in z = 0, into the equation as follows;
y²/8 - x²/8 - 0 = 1
y²/8 - x²/8 = 1
The above equation is the equation of an hyperbola in the xy plane
The equation for the cross section at y = -4, can be obtained by plugging in y = -4, into the equation as follows;
4²/8 - x²/8 - z² = 1
- x²/8 - z² = 1 - 4²/8 = -1
- x²/8 - z² = -1
x²/8 + z² = 1
The above is an equation of an ellipse in the xz plane
The equation for the cross section at y = 0, can be obtained by plugging in y = 0, into the equation as follows;
0²/8 - x²/8 - z² = 1
- x²/8 - z² = 1
Therefore; x²/8 + z² = -1
The equation for the cross section at y = 4, can be obtained by plugging in y = 4, into the equation as follows;
4²/8 - x²/8 - z² = 1
- x²/8 - z² = 1 - 2 = -1
x²/8 + z² = 1
The above equation is the equation of an ellipse in the xz plane
The equation for the cross section at x = 0, can be obtained by plugging in x = 0, into the equation as follows;
y²/8 - 0²/8 - z² = 1
y²/8 - z² = 1
The equation is the equation of an hyperbola in the yz plane
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The secretary spent her 35 hour work week in this manner: 1/5 of her time sorting mail, 1/7 of her time filing letters, and ½ of her time typing. The rest of her time she acted as a receptionist. The percentage of her time spent as a receptionist during the week was most nearly
Answers
GIVEN :
• Total hours per week = 35 hours,
Therefore :
• Sorting mails = ,1/5 * 35h ,= 7 hours
,• Filing letters = ,1/7 * 35 h, = 5 hours
,• Typing = ,1/2 *35 , = 17.5 hours
(i) Total time spent on office work = (7 + 5 +17.5 )hours = 29.5
(ii) Total hours - total time spent = time she acted as a receptionist
35 hour - 29.5 hours = 5.5 hours
This means that the secretary spends 5.5 hours acting as a receptionist
(iii) CONVERT 5.5 HOURS INTO PERCENTAGE :
\(\begin{gathered} Receptionist\text{ percentage = }\frac{5.5}{35}*100 \\ \text{ = 15.71\%} \end{gathered}\)This means that the secretary spends 15.71 % of her time acting as a receptionist
2x-9
X =
X +5
Use the triangle shown above to solve for x.
A
Answers
The value of x is 14.
We know in an isosceles triangle an isosceles polygon is a polygon with at least two sides of equal length.
We have two sides measured 2x-9 and x+ 5.
From the figure the length of sides are equal then
2x-9 = x+ 5
2x- 9- x = 5
x-9 = 5
Add 9 to both sides of the equation:
x - 9 + 9 = 5 + 9
x= 14
Thus, the value of x is 14.
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What information is needed to show that △ ABC ≅ △ DEF by SAS congruence?
Answers
In order to show that △ ABC ≅ △ DEF by SAS congruence, we need the sides of triangles ABC and DEF with the angle between the respective sides.
What do we understand by congruency of a triangle?Triangle congruence: Two triangles are said to be congruent if all three of their corresponding sides and all three of their corresponding angles have the same measurements. Slide, twist, flip, and turn these triangles to create an identical appearance. They are in alignment with one another when moved. "" is the congruence symbol. When two figures are comparable to one another in terms of their size and shape, this is what mathematicians mean by congruence. In essence, there are four congruence principles that demonstrate if two triangles are congruent. However, locating all six dimensions is essential. As a result, the congruence of triangles can be assessed using just three of the six variables.
Congruency Requirements:
SSS (Side-Side-Side)
SAS (Side-Angle-Side)
ASA (Angle-Side-Angle)
AAS (Angle-Angle-Side)
RHS (Right angle-Hypotenuse-Side)
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patient receives M milligrams of a certain drug each day. Each day the body eliminates 25% of the amount of drug present in the system. Determine the value of the maintenance dose M such that after many days approximately 20 milligrams of the drug is present immediately before a dose is given.
Answers
Answer:
Step-by-step explanation:
Solve these absolute value equations.
18. |3р + 7| = 6p
Answers
The absolute value of the given statement is a -3/7 and 3/7.
According to the statement
We have to find that the value of the absolute equations.
So, For this purpose, we know that the
An absolute value function is a function that contains an algebraic expression within absolute value symbols.
From the given information:
|3р + 7| = 6p
And we know that the
If we want to solve equations with absolute values we must know we have to find the solution for both positive and negative values. This is because positive and negative values have a positive absolute value.
Then
|3р + 7| = 6p
6p - 3p = 7
3p = 7
Then
p = 3/7.
According to the absolute value the answer become -3/7 and 3/7.
So, The absolute value of the given statement is a -3/7 and 3/7.
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Use distributive property to solve the problem
3 (9 - 10a) - 3a
Answers
Answer:
27- 1 = 26
Step-by-step explanation:
While viewing a herd of cattle on a ranch, Herbert estimated that there were 750 cattle in the herd. The actual number of cattle in the herd was 600.
What was the percent of error, rounded to the nearest percent?
15%
20%
25%
30%
Answers
The solution is, the percent of error, rounded to the nearest percent is 25%.
What is percentage?A percentage is a number or ratio that can be expressed as a fraction of 100. A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", although the abbreviations "pct.", "pct" and sometimes "pc" are also used. A percentage is a dimensionless number; it has no unit of measurement.
here, we have,
given that,
While viewing a herd of cattle on a ranch, Herbert estimated that there were 750 cattle in the herd.
The actual number of cattle in the herd was 600.
now, we have to find the percent of error, rounded to the nearest percent.
so, we get,
Herbert estimated that there were 750 cattle in the herd.
The actual number of cattle in the herd was 600.
so, error = 750 - 600
= 150
so, we get,
the percent of error = 150 * 100 / 600
= 25%
Hence, The solution is, the percent of error, rounded to the nearest percent is 25%.
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On a certain map, 1.2 represents 12 miles. Lenoir City and Greenback are 6 inches apart on the map. What is the actual distance between Lenoir City and Greenback?
Answers
Answer:
60 miles
Step-by-step explanation:
assuming 1.2 is inches the conversion rate is multiply inches by 10
6 x 10 = 60 miles
Answer:
60 miles
Step-by-step explanation:
1.2 inches represent 12 miles
so 1 inch = 12/1.2 10 miles
since lenoir city and greenback are 6 inches apart, therefore the actual distance between them is 6 * 10 = 60 miles
you're welcome.....
What is the exact length of HG in cms
Answers
The given triangle is a right angled triangle, therefore the rules of basic Trigonometry can be used here to find the solution.
Considering angle G, lets find sin 45°\(\qquad\displaystyle \tt \dashrightarrow \: \sin(45 \degree) = \frac{opposite \:\: side}{hypotenuse} \)
[ sin 45° = 1/√2 ]
\(\qquad\displaystyle \tt \dashrightarrow \: \frac{1}{ \sqrt{2} } = \frac{b}{x} \)
\(\qquad\displaystyle \tt \dashrightarrow \: x = b \sqrt{2} \: \: cm\)
So, the side HG is b√2 cm long
HELP!!
Next, you will make a scatterplot. Name a point that will be on your scatter plot and describe what it represents.
Answers
A point on the scatter plot is defined as (19, 3), which means that an input of 19 is mapped to an output of 3.
What is the scatter plot?The scatter plot is built inserting all the points of the table in a graph, which are in the following input-output format:
(Input, Output).
One point on the scatter plot for this problem has the coordinates given as follows:
(19, 3).
Hence the meaning is that an input of 19 is mapped to an output of 3.
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The midpoint of segment AB is M(-2,2). If A is located at (-5,7) find the coordinates of the endpoint B
Answers
Answer:
B (1, -3)
Step-by-step explanation:
Step 1: Use the midpoint formula to find the coordinates of the endpoint:
Normally, we find the midpoint of a segment using the midpoint formula, which is given by:
M = (x1 + x2) / 2, (y1 + y2) / 2, where
M is the midpoint,(x1, y1) are one endpoint on the segment,and (x2, y2) are the other endpoint of the segment.Since we're solving for the coordinates of an endpoint, we can allow (-5, 7) to be our (x1, y1) point and plug in (-2, 2) for M to find (x2, y2), the coordinates of the endpoint B:
x-coordinate of B:
x-coordinate of midpoint = (x1 + x2) / 2
(-2 = (-5 + x2) / 2) * 2
(-4 = -5 + x2) + 5
1 = x2
Thus, the x-coordinate of the endpoint B is 1.
y-coordinate of B:
y-coordinate of midpoint = (y1 + y2) / 2
(2 = (7 + x2) / 2) * 2
(4 = 7 + x2) -7
-3 = y2
Thus, the y-coordinate of the endpoint B is -3.
Thus, the coordinates of the endpoint B are (1, -3).
Based on the graph, what would be the slope for the line best fit of the scatter plot?
A-0
B-1/2
C-1
D-1 1/2
E-2
Answers
Answer: 1
Step-by-step explanation:
Help, I don’t know how to solve this
Answers
Answer:
a=A/8
Step-by-step explanation:
This MIGHT be the answer, I am 99% sure!
The graph is shifted 1 unit down and 4 units left
Answers
To answer this question, we need to remember the rules of transformation of functions, these rules are shown below:
Using these rules, we have that the equation that represents the new graph is:
\(y=\sqrt[3]{x+4}-1\)
plz help and ty very much
Answers
Answer:
True
Step-by-step explanation:
For a compound inequality using the word "or" to be true, all you need is for one of the parts to be true.
-6 < 7 is true
-2 <= -2 is also true
Answer: True
8+3=
Is equals to what
Answers
Please help me with 7, 11, 15, 9, 13, 17, . Please explain your answer for each one. I will give an Brainly and extra points.
Answers
The truth values of the composite propositions are listed below:
Case 7: T, Case 9: T, Case 11: F, Case 13: T, Case 15: F, Case 17: F
What are the truth values of composite proposition?
Propositions are constructions that contain itself a truth value. This exercise presents a proposition p is false and proposition q is true. Then, we proceed to find the truth value of each composite proposition, that is, a combination of propositions and operators.
Case 7
p → F Given¬ p → T Definition of negation / ResultCase 9
p → F, q → T Givenp ∨ q → T Definition of disjunction / ResultCase 11
p → F, q → T Given¬ q → F Definition of negationp ∨ ¬ q → F Definition of disjunction / ResultCase 13
p → F, q → T Given¬ p → T, ¬ q → F Defintion of negation¬ p ∨ ¬ q → T Definition of disjunction / ResultCase 15
p → F, q → T Givenp ∧ q → T Definition of conjunction¬ (p ∧ q) → F Definition of negation / ResultCase 17
p → F, q → T Given¬ p → T, ¬ q → F Definition of negation ¬ q ∨ p → T Definition of disjunction¬ p ∧ (¬ q ∨ p) → T Definition of conjunction¬ (¬ p ∧ (¬ q ∨ p)) → F Defintion of negation / ResultTo learn more on propositions: https://brainly.com/question/13011669
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kiran walks at a speed of 3 miles per hour while clare walks 3.4 miles per hour. after 1 hour how far apart will they be?
Answers
Answer:
0.4 miles
Step-by-step explanation:
kiran will have walked 3 miles while clare 3.4 so 3.4-3=0.4
two cyclists leave town 250 miles apart at the same time and Travel toward each other. what cyclist travels 7 mi/h slower than the other. if they meet in 5 hours, what is the rate of each cyclist? rate of the slower cyclists: __mi/hrate of the faster cyclist: __mi/h
Answers
let
a = rate of the faster cyclist
a - 7 = rate of the slower cyclist
\(\begin{gathered} \text{rate}=\frac{dis\tan ce}{\text{time}} \\ dis\tan ce=\text{rate}\times time \end{gathered}\)Therefore,
\(\begin{gathered} \text{distance covered by the faster cyclist=5a} \\ \text{distance covered by the slower cyclist=5(a-7)}=5a-35 \end{gathered}\)\(\begin{gathered} 215=5a+5a-35 \\ 215=10a-35 \\ 215+35=10a \\ 250=10a \\ a=\frac{250}{10} \\ a=25\text{ mile per hour} \end{gathered}\)\(\begin{gathered} \text{rate of the slower cyclist = 25-7=18 miles per hour} \\ \text{rate of the faster cyclist=25 miles per hour} \end{gathered}\)
A calculator displays 6E6. How do you write 6E6 in standard form
Answers
6E6 is a number written in scientific notation, which means that it represents 6 times 10 raised to the power of 6. To write this number in standard form, we need to evaluate the exponent and write the number in expanded form.
6E6 = 6 x 10^6
Evaluating the exponent 6 means multiplying 6 by 10 six times:
6 x 10^6 = 6 x 10 x 10 x 10 x 10 x 10 x 10
Simplifying the expression, we get:
6 x 10^6 = 6,000,000
Therefore, 6E6 in standard form is 6,000,000.
Find value of b and A
Answers
Answer:
Hi
Step-by-step explanation:
Please paste your question so I can solve it
Thanks
Which Box-and-Whisker Plot below correctly illustrates the data shown below? {22, 24, 24, 25, 26, 26, 27, 28, 28, 30} A. B. C. D.
Answers
b i your answer i know it
Step-by-step explanation:
The 3rd Box-and-Whisker Plot correctly depicts the data given.
What is a expression? What is a mathematical equation? What is a box and whisker plot?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. In descriptive statistics, a box plot or boxplot is a method for graphically demonstrating the locality, spread and skewness groups of numerical data through their quartiles.We have the Box-and-Whisker Plots for the data -
{22, 24, 24, 25, 26, 26, 27, 28, 28, 30} shown in the image.
We can identify the boxplot by the median calculation easily. We can find the median of the given data set as -
[M] = (26 + 26)/2 = (2 x 26)/2 = 26
Therefore, the 3rd Box-and-Whisker Plot correctly depicts the data given.
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HELLLP FAST
Mathamatics
Answers
Answer:
512 ft and 1,232 ft
Step-by-step explanation:
area is length x width
the pool's area can be calculated doing 32ft x 16ft
the area of the pool is 512 ft
the deck's area can be calculated doing 28ft x 44ft
the area of the deck is 1,232 ft
you're welcome<3
solve the following inequality for z. write your answer in simplest form. -9-(2z-7)>-2z-6-5z
Answers
Answer:
z > -4/5
Step-by-step explanation:
-9 - (2z - 7) > -2z - 6 - 5z
Get rid of the parenthesis
*There is the number one in front of the parenthesis.-9 - 2z + 7 > -2z - 6 - 5z
Combine like terms:
-2 - 2z > -7z - 6
+2 > +2
Add 2 to both sides.
-2z > -7z - 4
+7z > +7z
Add 7 to both sides.
5z > -4
Divide both sides by 5 to get z.
z > -4/5
The sign stays the same unless you divide by a negative number---------------------------------
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HELLLLLLPPPPPPPPPPPPPPP PLEASEEEEEEE IM BEGGING
Answers
Answer:
whats the question
Step-by-step explanation:
Answer:
the first one is not proportional
the second one is proportional