Mathematics Middle School

T + 7 = 25

Y - 8 = -8

16 + x = 21

21 = 4 + p

Show your work ! .

Answers

Answer 1
You have to do the inverse operation for each of them

25-7=18
T=18

0-8=-8
Y=0

21-16=5
x=5

21-4=17
p=17

Related Questions

You start a business making painted flower containers. You spend 300$ on paint and 5$ on each container. You charge 20$ for each container. How many containers do you have to sell to break even?

Answers

without paint, you're profiting $15 per container with the $5 original cost

300/15 = 20


I was sick the day that the class went over how to do this and I don’t know how to do it.

Answers

You first need to know the equation A=pi x r^2. The equation you need for this problem is pi (3.14) x 3^2

Which statement best describes the effect of replacing the function f(x)=2^x-2 with the function g(x)=2^x+3


A.) The graph shifts 1 unit up

B.) The graph shifts 5 units left

C.) The graph shifts 1 unit right

D.) The graph shifts 3 units right

Answers

For this case we have the following functions:
 f (x) = 2 ^ (x-2)
 g (x) = 2 ^ (x + 3)
 Horizontal translations
 Suppose that h> 0
 To graph y = f (x + h), move the graph of h units to the left.
 We have then:
 f (x + 5) = 2 ^ ((x + 5) -2)
 g (x) = 2 ^ (x + 3)
 Answer:
 B.) The graph shifts 5 units left

A college entry exam has 38 questions worth 200 points. The test consists of multiple-choice questions, x, worth 4 points each and essay questions, y, worth 10 points each. Which system of equations can be solved to find the number of multiple-choice questions on the test?

Answers

A system of equations is a set of equations to be solved by elimination or substitution.

There are no options listed in the question to choose from, but the equations should look like the following:

x= # multiple choice questions
y= # essay questions

QUANTITY EQUATION:
x + y= 38

VALUE EQUATION:
4x + 10y= 200

If we solved these two equations by elimination or substitution, we would find the number of multiple choice (x) and the number of essay (y) questions on the test.


ANSWER: x + y= 38; 4x + 10y= 200

Hope this helps! :)

Answer:

Let's use the variables x and y to represent the number of multiple-choice and essay questions on the test, respectively.

The total number of questions is 38, so we can write:

x + y = 38

The total number of points is 200, so we can write:

4x + 10y = 200

This gives us a system of equations:

x + y = 38

4x + 10y = 200

We can solve this system of equations to find the number of multiple-choice questions on the test.


Find the Distance, d, across the lake

Answers

The answer is 11.25 ft. 
You have to use similar figures to work this out.
15 ft / 8 ft has to equal d ft  / 6 ft
So, you divide 15 by 8, which equals 1.875
You then times 1.875 by 6 = 11.25


The Distance, d, across the lake is 26.25 feet.

Similar Triangles

When two triangles have all the corresponding angles equal to each other, then their sides are in a ratio.

Given to us,

AB = 8 feet,

BC = 15 feet,

BP = 6 feet,

PQ = d,

AP = AB + BP = 8 + 6 = 14 feet

In the figure, [tex]\triangle ABC \sim \triangle APQ[/tex]

[tex]\dfrac{BC}{AB}=\dfrac{PQ}{AP}[/tex]

[tex]\dfrac{15}{8}=\dfrac{d}{14}[/tex]

[tex]d = \dfrac{15\times 14}{8}[/tex]

[tex]d = 26.25[/tex]

Hence, the Distance, d, across the lake is 26.25 feet.

Learn more about Similar triangles:

https://brainly.com/question/25882965

13 percent of what is 78

Answers

13% of what is 78

"what" is the unknown, so use x for what.
"of" in math usually means a multiplication.
"is" means "="

13% * x = 78

0.13x = 78

x = 78/0.13

x = 600

Answer: the number is 600
i think the answer is 600

HELP NEEDED

Use the functions h(x) = 5x − 2 and t(x) = 4x + 6 to complete the function operations listed below.

Part A: Find (h + t)(x). Show your work.

Part B: Find (h ⋅ t)(x). Show your work.

Part C: Find h[t(x)]. Show your work.

Answers

Part A: Find (h + t)(x). Show your work. 
h(x) = 5x − 2 and t(x) = 4x + 6
so
(h + t)(x) = 5x − 2 + 4x + 6
(h + t)(x) = 9x +4



Part B: Find (h ⋅ t)(x). Show your work. 
h(x) = 5x − 2 and t(x) = 4x + 6
so
(h ⋅ t)(x) = (5x − 2) (4x + 6)
(h ⋅ t)(x) = 20x^2 + 30x - 8x - 12
(h ⋅ t)(x) = 20x^2 + 22x - 12



Part C: Find h[t(x)]. Show your work. 
h(x) = 5x − 2 and t(x) = 4x + 6
so
h[t(x)] = 5(4x + 6) − 2
h[t(x)] = 20x + 30 - 2
h[t(x)] = 20x + 28

hope all help.


given f(x)=6x+2 and g(x)=x^3 what is f(x) x g(x)?

a. 6x^4+2
b. 8x^2
c. 6x^4+2x^3
d. 6x^3+2

Answers

The answer is C. You distribute the x^3 (or g(x)) to the 6x+2. x^3 * 6x = 6x^4 and x^3* 2 = 2x^3, giving you 6x^4 +2x^3
[tex](6x + 2) \times (x^{3}) = \\ {x}^{3} \times 6x \: + {x}^{3} \times 2 = \\ 6 {x}^{4} + 2 {x}^{3} [/tex]
Alternative C

the goalie ate half of a pizza that had a diameter of 20 inches! what was the area of pizza that she ate? what was the length of crust she ate?

Answers

Area= pie • radius square

Since it’s diameter you divide it by 2 so it would 10. 10= radius, now does you multiply it by its self so 10•10= 100. Now multiply it but pie which it 3.14. 100•3.14= 314. 314 should be your answer!

Sorry if you get this wrong :( but I’m learning this and I usually get these right but best of luck! :)

A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of bacon, sausage, or fruit salad. The customer can choose coffee, tea, or milk. How many different combinations of eggs, side, and drink does a customer have to choose from?

Answers

3x3x3=27

So, there are 27 combinations.

A diner has a breakfast special. A customer can chose scrambled, fried, or poached eggs. The breakfast comes with a side of bacon, sausage, or fruit salad. The customer can choose coffee, tea, or milk. How many different combinations of eggs, side, and drink does a customer have to choose from?

Solution:

Number of ways the customer can choose eggs=3

Number of ways the customer can choose side=3

Number of ways the customer can choose drinks=3

So, total number of combinations for choosing eggs and side and drinks

=3(for eggs) and 3(for sides) and 3(for drinks)

=3 * 3 *3

=27

A customer has 27 combinations of eggs, side, and drink available.

The owner of a bookstore predicts that 30% of the books she sells each week are self-help books. To test this prediction, the owner randomly selects 150 books out of the total number of books sold for a week and records the type of each book. The table shows the results of samples taken for 2 separate weeks. Sample Fiction History Cooking Self-help Total week 1 50 29 37 34 150 week 2 55 31 34 30 150 Based on these samples, is the owner's prediction correct? Select from the drop-down menus to correctly answer the question. The owner's prediction is . Based on the samples, about of the books sold each week are self-help books.

Answers

The owner's prediction is incorrect.  About 23% of the books sold are self-help books.

34 out of the 150 sold in week 1 were self-help books.
34 out of the 150 sold in week 2 were self-help books.

This gives us 68 self-help books out of 300 books sold.

68/300 = 0.2267 ≈ 0.23 = 23%

Based on the samples, the owner's prediction of 30% is not correct; approximately 21.34% of the books sold each week are self-help books.

The bookstore owner predicts that 30% of the week's book sales are self-help books. To evaluate this prediction, we need to look at the number of self-help books sold in the samples provided for two separate weeks. In week 1, 34 out of 150 books sold were self-help books, which is 22.67%. In week 2, 30 out of 150 books sold were self-help books, which is 20%. To determine the average percentage of self-help books sold over the two weeks, we average these two percentages: (22.67% + 20%) / 2, which gives us 21.34%.

Suppose q and r are independent events, and P(Q)= 0.39, P(R)= 0.85. Find P(q and r)

Answers

Answer:
P (q and r) = 0.3315

Explanation:
We are given that:
P (q) = 0.39
P (r) = 0.85

Since the two events are independent, therefore, the formula that we will use to get P (q and r) is as follows:
P (q and r) = P (q) * P (r)

Based on the givens:
P (q and r) = 0.39 * 0.85 = 0.3315

Hope this helps :)

Answer:

0.3315

Step-by-step explanation:

How many pounds of peanuts will each person get if 3 people share 1/5 pounds of peanuts equally?

Answers

3 people share 1/5 pound

1 person = 1/5 ÷ 3 = 1/5 x 1/3 = 1/15 pound


Answer: 1 person gets 1/15 pounds of peanuts.

It says in abc, What is m

Answers

The interior angle measures of a triangle add up to 180°.

Make ∠A + B + C = 180.

x + (4x) + (5x - 13) = 180
Add all like terms.

10x - 13 = 180
Add 13 to both sides.

10x = 193
Divide both sides by 10.

x = 19.3

Now plug in x into m∠C, (5x - 13).
5(19.3) - 13 = 83.5

The m∠C is 83.5°.

Through music we can communicate more then what can be expressed with words alone
True or false

Answers

 i believe it is true.
I believe it is true because music has many expressions. Like for example, a violin(that’s what I play) can be played that it is singing the songs. I believe music is such a important thing in life.

Plzz help me im giving 12 points

Answers

this Is very simple.

30m + 50 = 20m + 100

This is the new equation needed to solve for m.
first we must isolate "m".

30m + 50 = 20m + 100
        - 50             - 50

30m = 20m + 50
-20m   -20m

10m = 50

divide both sides by 10 to isolate "m".

m = 5

hope this helps!





This is right or wrong, please anyone

Answers

Wrong,

You added when you were supposed to divide.

24/30 = 0.8


I believe the answer should be 0.8

I hope that this is right and sorry if I'm wrong  

Please help me with this!

Answers

Differences between x-values are 1. Differences between y-values are 2. The y-values are changing 2 times as fast as the x-values, so you are looking for an answer that involves 2x. The appropriate choice is
   D. 2x + 3

_____
You can check this result:
   for x=1: 2·1 + 3 = 5
   for x=4: 2·4 + 3 = 11
These values correspond to those in the table.
Let's just list the coordinats first.
(1,5)
(2,7)
(3,9)
(4,11)

When you see 3 and 9, you sometimes immediately think it is 3x=y, but you have to look at the other coordinates as well. This can be show in option a, 5x=y. This can not be the anser because 3×5=15≠9. We can eliminate that answer. Option B says that you are adding 2, but when you add 2 to 4, it equals 6 and not 11. The same for C, 4 added to 4 equals 8, not 11.

The one left, D, is the answer. When you put each x value in, you do get the corresponding y value as well. To even make sure, I made a graph with 2x+3=y as the function to see if those values/coordinates would pop up.

Which function goes with this graph?

Answers

From the given points on the graph we can find which function represents this graph.

A point on the graph is (3, 1). This means if we substitute x = 3 the answer must be 1.

The property of log is that [tex] log_{a}(a)=1[/tex]

This suggests, if the base of log is equal to the number for which we are finding the log, the answer must be 1.

So, in this case we have:

[tex]log_{a}(3)=1 [/tex]

Since the answer is 1, the base of log must be 3.

In the given options, only option 3rd is with base 3.

So, the correct answer is option 3.

A sample of 81 was taken from a population with a standard deviation of 45 kilograms. If the sample mean was 112 kilograms, the mean of any other sample of 81 will be within what range 99.7% of the time?

A. 97 kilograms to 127 kilograms
B. 102 kilograms to 122 kilograms
C. 92 kilograms to 132 kilograms
D. 107 kilograms to 117 kilograms

Answers

Sample size = n = 81
Population Standard Deviation = s = 45
Sample Mean = x = 112

Since, population standard deviation is known, we will use z distribution to find the confidence interval.

The critical z value for 99.7% is 2.968

So, the confidence interval will be:

[tex](112-2.968* \frac{45}{ \sqrt{81} }, 112-2.968* \frac{45}{ \sqrt{81} }) \\ \\ (97.16, 126.84)[/tex]

Rounding of to nearest integers the confidence interval will be 97 to 127.

So, option A gives the correct answer

give the length and width in whole inches of three different rectangles that each have an area of 48 in. squared

Answers

To find the length and width of 3 different rectangles that have an area of 48 square inches, you can use the factor pairs that result in 48.

The reason is that to find the area of a rectangle you multiply two dimensions.

2 in x 12 in
3 in x 8 in
4 in x 6 in

On all these either one could be the length and the other the width.

HELP WITH THE CORRECT ANSWER

Answers

take 30% of all the numbers from colors and add up

A cone has a volume of about 235.5 cubic centimeters. If the height is 9 centimeters what is the radius of the cone?

Answers

r≈5cm

hHeight: 9


VVolume: 235.5

10 points and brainliest to best answer
plz answer in this form
|
\/

top left:
top right:
bottom left:
bottom right:

Answers

Top Left: Rate of change is less than 1.
Top Right: Rate of change is greater than 1.
Bottom Left: Rate of change is less than 1.
Bottom Right: Rate of change is greater than 1.
Look at x. The number behind the variable is the rate of change.

Have a nice day! ♪
Left is less than 1 and right is greater than 1

you need to count all of the loaves of bread in the front area . there are 22 loaves of white bread, 17 loave of wheat bread, and 19 gourmet breads.what is the total number of loabes?

Answers

19+17=36
36-22=14
the answer is 14
this is a very simple problem if you need to know the amount of loaves of bread in the front area it is a simple addition problem 22+17+19=__ using the formula we find the answer is 58 loaves of bread
 

which of the following functions is continuous between x=-3 and x=0? choices on attachment

Answers

When we say that a function is continuous between x = -3 and x = 0 it means that it exists for all values of x in between -3 and 0. Let's take a look at each choice individually:

A: f(x) = (-x + 1)/(x + 2)
Now we don't actually need to know what the graph of this function looks like to see which values it is continuous for, instead we should look at which values of x will make this function undefined - in this case that would be x = -2. The reasoning behind this is that a number divided by 0 would be undefined, so when we search for which value of x would make the denominator of the equation 0, we get:
x + 2 = 0
x = -2
Since x = -2 is within the interval [-3, 0] we cannot say the function is continuous over this interval

B: f(x) = -2/(x + 1)
Using the same method as above we get:
x + 1 = 0
x = -1
x = -1 is again within the interval [-3, 0] and so the function is not continuous within this interval

C: f(x) = 3x/(x - 2)
x - 2 = 0
x = 2
x = 2 is outside the interval of [-3, 0] and so the function is continuous within this interval and C is the correct answer.

Just for the sake of it however we can look at D as well:
D: f(x) = 1/(2x + 1)
2x + 1 = 0
x = -1/2
-1/2 is within [-3, 0] and so D is not continuous over this interval

Jerome bought a book on sale at the store. The sale price of the book was $8.96. Write and solve an equation to determine the regular price of the book to the nearest cent

Answers

Final answer:

The regular price of the book is $8.96.

Explanation:

To determine the regular price of the book, we can set up an equation using the sale price and the regular price. Let's say the regular price is 'x'.

So the equation becomes:

8.96 = x

To solve for 'x', we can simply state that the regular price of the book is $8.96.

Fernando poured water from one-pint bottles into a three-gallon bucket. How many pints of water could the bucket hold? 

Answers

24 pints is the answer
24

One gallon holds eight pints. 8 x 3 = 24

OFFERING 15 POINTS... Please answer all... I need help..

1. Which set of rational numbers is arranged from least to greatest? (4 points)

−0.5, -1/5 , 1/9 , 1
1, 1/9 , −0.5, -1/5
1/9 , −0.5, 1, -1/5
-1/5 , 1, 1/9 , −0.5

2. What does negative 2/3 > −1 indicate about the positions of negative 2/3 and −1 on the number line? (4 points)

negative 2/3 is located to the right of −1
negative 2/3 is located on the left of −1
negative 2/3 is located on the right of 0, and −1 is located on the left of 0
negative 2/3 is located on the left of 0, and −1 is located on the right of 0

3. Which inequality best represents that ice cream at −3°C is cooler than ice cream at 1°C? (4 points)

−3°C > 1°C
−3°C < 1°C
1°C > 3°C
1°C < −3°C

Answers

1. −0.5, -1/5 , 1/9 , 1

2. negative 2/3 is located to the right of −1

3. −3°C < 1°C

_____
It might help your understanding to spend a little time looking at number lines with positive and negative numbers and fractions marked on them.

What is the volume of the triangular prism ?

Answers

The volume of the rectangular pyramid is 640 cm³.

What is the volume of a pyramid?

The volume of a pyramid is [tex]\frac{1}{3} Ah[/tex] where A is the area of the base of the pyramid and h is the height.

Area of the base = area of a rectangle with dimensions 12cm*10cm

Area of the base =12*10 =120 cm²

Height of the pyramid =16cm

So, the volume of the pyramid = [tex]\frac{1}{3}*120*16[/tex] cm³

The volume of the pyramid =640 cm³

Hence, the volume of the rectangular pyramid is 640 cm³.

To get more about pyramids visit:

https://brainly.com/question/12903285

Other Questions
What percentage of people die unexpectedly and suddenly? Your neighbor is quite upset. she is 82 years old and has been having some serious vision problems. you have suggested quite a few times that she needs to see her doctor. she finally went and she was told that she has cataracts. she feels like she is the only one her age that has this problem. what could you tell her regarding what percentage of adults her age have cataracts? How do you use properties of exponents and logarithms to rewrite functions in equivalent forms and solve equations? What are the names of the three stages of development that a fertilized egg goes through before birth? In one family, all three children are homozygous for a recessive gene. What can be concluded about the parents? someone help me please What was the water route to India that Vasco da Gama found?around South Americaaround Africathrough the Northwest Passageacross the Pacific Can someone please answer all these please?a) When Lucia buys olives at the deli, the scale shows 0.325 kg at $18.88 per kg. How much should she pay? b) Johns weekly wage is $1510.99 and he pays 2/3 of his weekly income in rent. How much rent does he pay each week?c) A farmer owns 780 hectares of land. During a bushfire, 195 hectares are burnt. What percentage of his land was burnt? d) Candles are $14.95 each. Estimate how much I need if I want to buy 17 of them. Show your working.e) Decrease 5000 by 13 %.f) Ray bought a computer for $1600 and then a year later sold it for $1200. Calculate his loss = Calculate his loss as a percentage of the original price of the computer = g) John spent $80 on dinner last Friday night. If this $80 is equal to 40% of his weekly income, calculate his weekly income.h) Mr Jenkins invested $7500 at his local bank at 6.5% Simple Interest per annum.What was his investment worth at the end of the first year?Question 5 a) Express this ratio in lowest terms:50 minutes : 2 hoursb) Divide $120 in the ratio 5:7c) Jane and Ben share in their lottery win in the ratio of 7: 3.If Janes share of the money is $5600, how much does Ben receive? What upsets atticus about tom robinson's conviction? The executive branch of Florida is headed bythe supreme court.the president.the governor.the senate. Calculate the surface area of the portion of the surface z=x^2 + y that lies above the triangular region t wth vertices 0,0 4,0 and 4,2 Can television be considered literature and taught in english classes answer key What is the approximate wavelength of a light whose first-order bright band forms a diffraction angle of 45.0 when it passes Which is equivalent to sin^-1(tan(pi/4)) ? Give your answer in radians. How does the Tinker decision affect your right to wear a T-shirt supporting a cause you believe in? Choose three poems from this unit that were not written by Walt Whitman; they are The Soldier, In Flanders Fields, Dulce et Decorum Est, War Is Kind, and There Will Come Soft Rains. For each of the three, state the poets message about war, and analyze how the poet uses language and poetic structure to highlight that attitude. Cite specific words and lines from each poem that you choose to analyze. (-14,-20),(-5,9) what is the slope? Kenny is making creamy rice pudding his recipe requires 4 cups of milk he has a quart of milk in his fridge dose he have enough milk explain What message does jeltz play over the intercom? In hitchhiker's guide to the galaxy Jason wants to choose 9 players for his track team. There are 12 players to choose from. How many different teams can Jason make?