All categories

3 years ago

Solve the equation. x+7=−8

2 answers:

4 0

X+7=-8
You are trying to get x on its own so you will subtract 7 from both sides.
x+7-7=-8-7
This simplifies to x= -8-7
A negative plus a negative equals a negative. So -8-7 equals -15
Your final answer is x=-15

Andrei [34K]3 years ago

3 0

Solution

1) Subtract 7 from each side
x=−8−7

2) Simplify −8−7 to −15
x=−15

You might be interested in

Whats negative 12 plus negative 9 minus negative 7

alex41 [277]

Answer:

-12-9--7= -14

Step-by-step explanation:

1 -12-9--7=

2 -21--7= (minus negative equals plus)

3 -21+7=14

3 0

3 years ago

Read 2 more answers

To make a soup, 2 cups of chicken broth are needed for each 1/4 cup of dried lentils. How many cups of chicken broth are needed

dybincka [34]

Answer:

You'll need 18 cups of chicken broth!

Step-by-step explanation:

You are using a ratio of 1/4 cup (lentils) to 2 cup (broth). Therefore, you need to find the relationship between lentil and broth.

In order to get from 1/4 to 2, you multiply by 8. (1/4 * 8 = 2)
Therefore, the common relationship is multiplying the lentil amount by 8
So, 2 1/4 * 8 = 18

Therefore, 18 cups are needed :D

5 0

4 years ago

Two new devices for testing blood sugar levels have been developed. How do these devices compare? You test blood sugar levels of

Ber [7]

Answer:

The matched pairs t test.

Step-by-step explanation:

You test blood sugar levels of 20 diabetics with both devices and use B. the matched pairs t test.

6 0

3 years ago

Solve -21 = -9 + 2/3b

Svet_ta [14]

Final Answer: $b = -18$

Steps/Reasons/Explanation:

Question: Solve $-21 = -9 + \frac{2}{3}b$ .

Step 1: Simplify $\frac{2}{3}b$ to $\frac{2b}{3}$ .

$-21 = -9 + \frac{2b}{3}$

Step 2: Regroup terms.

$-21 = \frac{2b}{3} - 9$

Step 3: Add $9$ to both sides.

$-21 + 9 = \frac{2b}{3}$

Step 4: Simplify $-21 + 9$ to $-12$ .

$-12 = \frac{2b}{3}$

Step 5: Multiply both sides by $3$ .

$-12$ × $3 = 2b$

Step 6: Simplify $-12$ × $3$ to $-36$ .

$-36 = 2b$

Step 7: Divide both sides by $2$ .

$-\frac{36}{2} = b$

Step 8: Simplify $-\frac{36}{2}$ to $-18$ .

$-18 = b$

Step 9: Switch sides.

$b = -18$

~I hope I helped you :)~

3 0

3 years ago

James traveled 153 miles in 2 hours. If he continues at a constant speed, how many miles can

Pachacha [2.7K]

Answer:

612

Step-by-step explanation:

take 153 and 2 and divide

153/2=76.5

This answer is your rate in mph, so now take this and multiply by hours given

76.5*8=612 use a calculator.

7 0

3 years ago