All categories

3 years ago

Solve for x: 7x + 15 = 38

Mathematics

1 answer:

olganol [36]3 years ago

7 0

7x + 15 = 38
7x = 38 - 15
7x = 23
x = 23/7 (twenty- three sevenths)

You might be interested in

What is the volume of the sphere below?

lbvjy [14]

Answer:

Option C

Step-by-step explanation:

sorry if I'm wrong..

4 0

3 years ago

. Joe worked on his science project 4 2/3 hours on Saturday, 3.5 hours on Monday, and 3 hours on Tuesday. What was the total num

boyakko [2]

The answer is 10 hours and 20 minutes

5 0

3 years ago

What is this simplified: 5(z+4)+5(2-z)

STALIN [3.7K]

It would be 30 because when you add 5z to a -5z those cancel out so what you have left would be 20+10 and you would add those together and get 30.

7 0

3 years ago

Melanie bought 4 large gifts and 2 small gifts. Mary bought 1 large gift and 20 small gifts. Each small gift costs $10. They bot

ziro4ka [17]

Answer:

One large gift costs $60.

Step-by-step explanation:

Mary spent $200 (20 x $10) on small gifts. This means that:

Mary = $200 + 1 large gift

Melanie spent $20 (2 x $10) on small gifts. This mean that:

Melanie = $20 + 4 large gifts

Because the amount Melanie and Mary are equal, we know that:

$200 + 1 large gift = $20 + 4 large gifts

To work out the cost of 1 large gift, you first need to work out the difference of large gifts. (4-1=3). Melanie bought 3 more large gifts than Mary.

This means that:

$200 = $20 + 3 large gifts

Then, subtract $20 from both sides.

$180 = 3 large gifts

Finally, divide both sides by 3 to find the cost of 1 large gift.

$180 ÷ 3 = $60

7 0

3 years ago

Read 2 more answers

What are the zeros of f(x)=x^2+x-20?

zzz [600]

F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)

f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4

Answer: C. x = -5 and x = 4.

3 0

3 years ago