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Paraphin [41]
4 years ago
15

Solve for x 4 (x – 7) = -8

Mathematics
2 answers:
daser333 [38]4 years ago
6 0
It should be 5. When you distribute the 4, it turns into 4x then (4•-7) = -28. Add 28 to -8 and you get 20. Divide 4 on Both sides and X=5
Lyrx [107]4 years ago
3 0

Answer:x=4

Step-by-step explana

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Draw a bar model that shows a pen is four times as long as an Eraser that is1 1/3 inches long.
e-lub [12.9K]
\text{Eraser =} 1\dfrac{1}{3}  \text{ inches}

\text{Pen =} 1\dfrac{1}{3} \times 4 \text{ inches}

\text{Pen =} \dfrac{4}{3} \times 4 \text{ inches}

\text{Pen =} \dfrac{16}{3} \text{ inches}

\text{Pen =} 5\dfrac{1}{3} \text{ inches}

6 0
4 years ago
Jonathons piggy bank contains 20 nickels 30 quarters and 50 one dollar coins. He picks 20 coins from the bank at random
fredd [130]

Answer:

All in all, Jonathan's piggy bank contains 100 coins. Among these coins, only 50 are one-dollar coins. Therefore, the theoretical probability of picking one-dollar coin from the piggy bank is equal to 50/100 or 1/2.  

Similarly, from the experiment, 20 coins were picked and among these there are 12 one-dollar coins. The answer to the second question is therefore 12/20 or 3/5.

Step-by-step explanation:

4 0
3 years ago
Write an expression that represents the statement " the product of 6 and the sum of 3 times a number n and 5"
kramer
6(3x + 5 )

hope that helps
5 0
3 years ago
Which equation represents a proportional relationship? A. y = x + 1 3 y=x+13 B. y = 1 − 1 3 x y=1-13x C. y = 3 x + 1 3 y=3x+13 D
34kurt

Answer:

Option D. y=\frac{1}{3}x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

<u><em>Verify each case</em></u>

case A) we have

y=x+\frac{1}{3}

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

y=0+\frac{1}{3}=\frac{1}{3}

so

The line not passes through the origin

therefore

The equation A not represent a proportional relationship

case B) we have

y=1-\frac{1}{3}x

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

y=1-\frac{1}{3}(0)=1

so

The line not passes through the origin

therefore

The equation B not represent a proportional relationship

case C) we have

y=3x+\frac{1}{3}

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

y=3(0)+\frac{1}{3}=\frac{1}{3}

so

The line not passes through the origin

therefore

The equation C not represent a proportional relationship

case D) we have

y=\frac{1}{3}x

Remember that

the line must pass through the origin

so

For x=0, y=0

In this case

For x=0

y=\frac{1}{3}(0)=0

so

The line passes through the origin

therefore

The equation D represent a proportional relationship

3 0
3 years ago
∠3 is a supplement of ∠2, and m∠2=147∘. Find m∠3.
Bumek [7]
The answer is 33. A supplement means that the 2 angles add to 180. Therefore, 180-147=33.

Hope this helped!❤❤
7 0
3 years ago
Read 2 more answers
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