3 years ago

What is the answer to 18x-(8x-7)=67

Mathematics

2 answers:

Elza [17]3 years ago

7 0

18x-8x+7=67

10x+7=67

10x=60

x=6

Check Your Work

18(6)-48+7=67

108-48+7=67

60+7=67

Hope this helps...

sp2606 [1]3 years ago

6 0

Your variable x would be equal to 6.
In short, x=6

You might be interested in

Square root of 5u+2 = square root of 3u+14

alina1380 [7]

Sqrt(5u + 2) = sqrt(3u + 14)
Square both sides to clear the square root.
5u + 2 = 3u + 14
subtract 3u from both siides
2u + 2 = 14
subtract 2 from both sides
2u = 12
divide both sides by 2
u = 6
When you square a square root you MUST check the solution.
sqrt(5*6 + 2) = sqrt(3*6 + 14)
sqrt(32) = sqrt(32)

8 0

3 years ago

Which table represents a linear function?

amid [387]

Top, right because the numbers are increasing by the same amount (2 in this case).

5 0

3 years ago

Using the numbers 4.3, -1.07, and -2.917, write an expression containing both addition and subtraction that simplifies to a nega

Advocard [28]

Answer:

-1.07+(-2.917)-4.3=-8.287

Step-by-step explanation:

6 0

4 years ago

Stuck On this one too. Think I’m missing a step

Elis [28]

Answer:

The answer is B) 152

Step-by-step explanation:

3 0

3 years ago

How much heat in kJ is released when nitrogen and hydrogen react as below to form 100.g ammonia heat equals-92.2kj

tresset_1 [31]

100g of ammonia releases 271.18 kJ of heat.

<u>Explanation:</u>

Given:

N₂ reacts with H₂

The reaction is:

2N₂ + 3H₂ → 2NH₃ + 92.2 kJ

According to the balanced reaction:

2 X 17g of ammonia releases 92.2 kJ of heat

34g of ammonia releases 92.2 kJ of heat

100g of ammonia will release = $\frac{92.2}{34} X 100$ kJ of heat

= 271.18 kJ

Therefore, 100g of ammonia releases 271.18 kJ of heat.

8 0

3 years ago