7th grade math, shouldn't be this hard.

7th Grade Math, Shouldn't Be This Hard.

Answers

Answer 1

Answer:

x = 12

Step-by-step explanation:

Step 1: Add 9 to both sides.

[tex]7x - 9 + 9 = 75 + 9[/tex] [tex]7x = 84[/tex]

Step 2: Divide both sides by 7.

[tex]\frac{7x}{7} = \frac{84}{7}[/tex] [tex]x = 12[/tex]

Step 3: Check if solution is correct.

[tex]7(12) - 9 = 75[/tex] [tex]84 - 9 = 75[/tex] [tex]75 = 75[/tex]

Therefore, x = 12.

Answer 2

Answer:

x = 12

Step-by-step explanation:

This is a multi-step equation.

The first thing we can do is add 9 to both sides, eliminating the -9 from the left side of the equation. Now we have 7x = 84.

You can divide 84 over 7x to get a total of x =12.


Related Questions

What is the coefficient of q in the sum of these two expressions?

(23q – 34) and (–16q – r)

Answers

Answer:

The coefficient of q is 7

Step-by-step explanation:

The two expressions are

(23q – 34) and (–16q – r)

and .

(–16q – r)

The sum of the two expressions is

23q - 34 + -16q - r

When we group like terms the expression will be,

=23q - 16q - r - 34

When we  simplify the expression will now be

=7q - r - 34

The coefficient of q is the constant behind q in the expression.

The coefficient of q is therefore 7.

1) Blair has a box of candy to sell. She has 4 chocolate bars, 4 fruit chews, 1 pack of
bubble gum and 3 sour candies.
If she chooses a piece of candy at random, how many possible outcome are there?
O 11
0 42
O 13
O 12

Answers

Answer:

12

Step-by-step explanation:

If she's only selecting one candy, then you simply need to count how many candies there are.

Answer:

12 are the possible outcomes

Step-by-step explanation:

because probability is a game of chance

possible outcomes/ total outcomes

Solve each system of equations without graphing.

Answers

Answer:

t=11/6

u=1/9

Step-by-step explanation:

2. What are the values of a and b?
(1 point)

Answers

Answer:

9 13

a_. b=_

3 3

Step-by-step explanation:

it's that because you can devid 9 by 3

-4 + 5x -7 = 10 + 3x - 2x

Answers

Answer:

X = 21 / 4 (21 over 4)

Step-by-step explanation:

First, we combine like terms:

5x−11=x+10

Step 2: Subtract x from both sides.

5x−11−x=x+10−x

4x−11=10

Step 3: Add 11 to both sides.

4x−11+11=10+11

4x=21

Step 4: Divide both sides by 4.

4x/4 = 21/4

x= 21 / 4

Please give me brainliest of this helped you! Thanks!

How many solutions does this equation have?

–2m − 2m = –4m

Answers

Answer:

Infinitely many

Step-by-step explanation:

[tex]-2m-2m=-4m[/tex]

Combine −2m and −2m to get −4m.

[tex]-4m=-4m[/tex]

Add 4m to both sides.

[tex]-4m+4m=0[/tex]

Combine −4m and 4m to get 0.

0=0

Compare 0 and 0.

True

This is true for any m.

m∈R\

Hope this helps! Brainliest would be much appreciated! Have a great day! :)

Which fraction is equivalent to 0.407?

A. 5/24. B. 11/27. C. 13/28. D. 15/31

Answers

The Answer is B as 11 divided by 27 ≈ 0.4074074074
Which can be written as 0.407

The equivalent fraction will be;

⇒ 11/27

What is mean by Fraction?

A fraction is a part of whole number, and a way to split up a number into equal parts. Or, A number which is expressed as a quotient is called fraction. It can be written as the form of p : q, which is equivalent to p / q.

Given that;

The number is,

⇒ 0.407

Now,

Since, The number is,

⇒ 0.407

Hence, The equivalent fraction will be;

⇒ 407/1000 = 0.407

And, By option B;

⇒ 11/27 = 0.407

Thus, The equivalent fraction will be;

⇒ 11/27

Learn more about the fraction visit:

https://brainly.com/question/5454147

#SPJ2

Pleasee help me with this thank you!

Answers

Answer:

12/7=Big/Small

Step-by-step explanation:

A side in the smaller square is 7. A side in the bigger square is 12. That means the bigger side compared to the smaller side will be 12:7. That's the definition of a scale factor.

every item is 80% off and the regular price of a t-shirt is 10$ what is its sale price

Answers

Answer:

2$

Step-by-step explanation:

10$ - 80%=2$

The sale price is 2$.

€)) Which expression is equivalent to 4x + 4x + 1? ? 5x + 4 2x + 9 4x + 5 8x + 1 Submit​

Answers

Answer:

8x + 1

Step-by-step explanation:

Hope this Helps!

Wafa is in a jewelry making class at
of triangular earrings from a metal circle. She
knows that AC is 115°. If she wants to cut two
equal parts off so that AB = BC, what is x?
HELP ME PLSSS

Answers

the third angle is 50 degrees

Which is the graph of the linear inequality y = -x-3?

Answers

Answer: .......

ok done. Thank to me :>


Find the area of the parallelogram.
5 in.
8 in.

Answers

Area equals length times width
So it would be 5x8=40
So 40 inches is the answer

What is x for this equation 200.89x*98108=27302347?
Please Help It's For Math Class It's due it 10 mins

Answers

If it is done correctly the answer should be 1.38527897

The length of the base of the triangle is 6x -2 meters, the height of the triangle is (3x+2)². find the algebraic expression of the area of the triangle (area=bxh/2)

Answers

Answer:

27x³ + 27x² - 4 meters²

Explanation:

To find the area of the triangle, we must multiply 1/2 x base x altitude to get the answer. But first, we need to simplify the height. We are given the base and the altitude.

Base = 6x - 2Height = (3x + 2)²

Solution:

Area of triangle = 1/2 x (6x - 2) x (3x + 2)²=> Area of triangle = 1/2 x (6x - 2) x (3x + 2)(3x + 2)=> Area of triangle = 1/2 x (6x - 2) x (3x + 2)(3x + 2)=> Area of triangle = 1/2 x (6x - 2) x (9x² + 6x + 6x + 4)=> Area of triangle = 1/2 x (6x - 2) x (9x² + 12x + 4)=> Area of triangle = 1/2 x (54x³ - 18x² + 72x² - 24x + 24x - 8)=> Area of triangle = 1/2 x (54x³ + 54x² - 8)=> Area of triangle = (54x³/2 + 54x²/2 - 8/2)=> Area of triangle = 27x³ + 27x² - 4 meters²

Hence, the area of the triangle is 27x³ + 27x² - 4 meters².

Find the volume of the figure.


A
7.18 in3

B
34.44 in3

C
51.66 in3

D
103.32 in3

Answers

Answer:

The volume of the figure is 51.66 in3

Step-by-step explanation:

sol;

volume of prism=area of trangular base * length of prism

                          =1/2*b*p*7.2

                          =1/2*4.1*3.5*7.2

                          =51.66 in3

How can energy be used at night when the Sun is not shining?



Answers

Answer:

I think is C. If not i'm sorry.

c-1 1/4>-2 1/2 please help me

Answers

I believe your answer should be C > -5/4

Select the correct answer.

What is the value of y in the triangle?

a 30-60-90 triangle with long leg length y and hypotenuse length 6

A.

B.

C.

D.

Answers

Answer: In a 30-60-90  triangle the side opposite the 30 degree angle is half the length of the hypotenuse. The shorter leg is the side opposite the 30 degree angle, therefore the shorter leg = 30/2 = 15

By the Pythagorean theorem

the longer leg = √(30² - 15²) = √(900-225) = √675 = 15√3 ≈ 25.98 units

Match the vocabulary to the proper definition.

1. experiment
two disjoint events of which one or the other must occur
2. complementary events
any activity that has two or more outcomes
3. event
a specific outcome or group of outcomes
4. disjoint events
events that have no outcomes in common

Answers

Answer:

Step-by-step explanation:

1) Experiment - any activity that has two or more outcomes

2) Complementary events - two disjoint events of which one or the other must occur

3) Event - a specific outcome or group of outcomes

4) Disjoint events - events that have no outcomes in common

The table shows how women’s shoe sizes in the United Kingdom compare to women’s shoe sizes in the United States.

a. Write a linear equation to determine the U.S. size y if you are given the U.K. size x.

b. What would be the U.S. shoe size for a woman who wears a U.K. size 7.5

Answers

Answer:

A: Y = X + 2.5

B: 10

Step-by-step explanation:

A: To form the equation you have to use one of the numbers in X (U.k Size) for this example we'll use 3 and to form the equation you have to see how much to add to X ( UK size) to get Y ( US size) and in this case it's +2.5

B: You can use the equation we just formed to get this answer by adding 2.5 to 7.5 which will give you 10

plase help me I already set the equation up I just need you to solve it.

(it's a percentage question if you didn't know)​

Answers

Answer:

[tex] \frac{6}{30} = \frac{x}{100} [/tex]

[tex]30(x) = 100(6)[/tex]

[tex]30 \times x = 100 \times 6[/tex]

[tex]30x = 600[/tex]

[tex]x = \frac{60 \cancel0}{3 \cancel0} [/tex]

[tex]x = \cancel \frac{60}{3} \: {}^{20} [/tex]

[tex]x = 20[/tex]

Divide 60 in the ratio 3:9​

Answers

so the total number is 60, and we can just divide it by (3+9) and then distribute accordingly.

[tex]\stackrel{ratio~3:9}{60}\qquad \qquad 3\cdot \frac{60}{3+9}~~ :~~9\cdot \frac{60}{3+9}\implies 3\cdot \frac{60}{12}~~ :~~9\cdot \frac{60}{12} \\\\\\ 3(5)~~ : ~~9(5)\implies 15~~:~~45[/tex]

simplify these expresions pls

1. 2(3+d-1)
2. 5(k+4)-2k​

Answers

Answer:

1. 4+2d

2. 3k+20

Step-by-step explanation:

what information is missing

Answers

rainfall in mm

Step-by-step explanation:

we cant count water in inches

Answer please i will give brainliest

Answers

Step-by-step explanation:

a.

simply add both equations

x + y = 2

-3x - y = 5

----------------

-2x + 0 = 7

x = -7/2

x + y = 2

-7/2 + y = 2

y = 2 + 7/2 = 4/2 + 7/2 = 11/2

b.

1/2 x + 2y = -13

x - 4y = 8

first multiply the first equating by 2

x + 4y = -26

x - 4y = 8

--------------------

2x + 0 = -18

x = -18/2 = -9

x - 4y = 8

-9 - 4y = 8

-4y = 17

y = -17/4

system
BIG IDEAS MATH
#6
i
Find the area of the figure. Round your answer to the nearest
hundredth, if necessary.
Dil
18 cm
about cm2

Answers

Answer:

127.24

Step-by-step explanation:

A= 3.14(pie) r^2

A=3.14(pie) 9^2

A=254.47 ÷2

A= 127.24

1. In Hypothetical Town, the probability that a teenager in a household has an Android device is 0.67 and the probably that a teenager in a household owns an Apple device is 0.33. A family has two teenagers. If X is the number of teenagers who own an Apple device, find the probability that the family has 0, 1, or 2 teenagers who own an Apple device.

(a) Draw a tree diagram showing the possibilities for each outcome.

(b) Create the binomial distribution table for P(X).

Show all your work.


Please help me

Answers

The probability that the family has 0 teenagers who own an Apple device is 44.44%, the probability that it has 1 is 44.44% and the probability that it has 2 is 11.11%.

Probabilities

Given that in Hypothetical Town, the probability that a teenager in a household has an Android device is 0.67 and the probability that a teenager in a household owns an Apple device is 0.33, to determine, if a family has two teenagers, the probability that the family has 0, 1, or 2 teenagers who own an Apple device, the following calculation must be performed:

0.67 x 0.67 = 0.440.67 x 0.33 x 2 = 0.440.33 x 0.33 = 0.110.44 + 0.44 + 0.11 = 0.99

Therefore, the probability that the family has 0 teenagers who own an Apple device is 44.44%, the probability that it has 1 is 44.44% and the probability that it has 2 is 11.11%.

Learn more about probabilities in https://brainly.com/question/795909

12 divided by 5/6 equals what ?

Answers

Answer:

Exact Form:

72/5

Decimal Form:

14.4

Mixed Number Form:

14 2/5

Step-by-step explanation:

yea thats what i got

Answer: 14.4

Explanation u can u a calculator

Hope this helps!

What is the description of the pattern in the sequence?
1, 4, 16, 64, 256,...

a. The pattern is to multiply 3.
b. The pattern is to multiply by 4.
c. The pattern is to add 3.
d. The pattern is to add 4.

Answers

The answer is B to multiply by 4
Explanation
1 x 4 is 4
4 x 4 is 16
16 x 4 is 64
And 64 x 64 is 256

Hope this helps

Answer:

answer is B

Step-by-step explanation:

trust me I took this quiz already

Other Questions
12 less than 7 times a number x The price of a pumpkin is determined by how much it weighs. An 8.5 pound pumpkin costs a total of $10.54. Use this informationto write an equation that could be used to find the cost, C, of a pumpkin weighing, p, pounds. Lashonda received a $90 gift card for a coffee store. She used it in buying some coffee that cost $7.31 per pound. After buying the coffee, she had $53.45 left on the card. How many pounds of coffee did she buy? What is the circumference of this circle? 8 pi 9 pi 12 pi 16 pi Which concern of Andrew Jackson was a primary issue dividing the political parties during his presidency The woman in the house across the street what happened to her daughter. please help me , i don't know this it's 7th grade math dialouge between two friends about social problems and evils What 3 battles were fought along the TX Gulf Coast?a.b.c. Write each of the forms of the verb estar in the present tense. Then demonstrate how to use the verb by writing a sentence using one of the forms. Which of the following statements best describes Islam's spread from the 7th century through the 17th century? Military conquests by the Arab Empire and traders of Islamic faith were the primary means for spreading Islam to Africa, Europe, and Asia. Islam reached North, Sub-Saharan, and East Africa, but did not take hold in Asia. The Arab Empire rejected military conquest; therefore, trade and missionaries were the primary means for spreading Islam beyond the Arabian Peninsula. The spread of Islam was limited to the areas of the Arabian Peninsula where Muhammad traveled. When you turn a corner, always be on the alert for __________. Solve the equation q+5/9=5/6 q=? If someone could answer these for me that would be amazing :( parents are in the hospital so I need to finish fast to go see them What was Squealers gift or ability? In your own words, explain the message the government was trying to give to the people of the Soviet Union by using propaganda such as the posters you saw.Respond in at least three sentences. I need help plz plz plz plz Nicole has 144 role-playing cards and $9to buy more cards. She and her friends buyanother set that costs $27. They evenlysplit the cost and the cards in the set. Howmany cards does Nicole have after she buyspart of a set with her friends? PLEASE HELP WILL MARK BRAINLIST!!!! 1.The farmer Grow vegetables.(into Passive)2.Could you write French? (into Passive)3.How do we pass the exam?(into Passive)4.Some old photographs have ben collected.(into active)5.Nobody Respect him at school. (into Passive)