3 years ago

Como se hace -8n+7=31

Mathematics

1 answer:

velikii [3]3 years ago

8 0

-8n+7=31
-8n+7-7=31-7
-8n=31-7
-8n=24
-8n÷(-8)=24÷(-8)
n=24÷(-8)
n=-24÷8
n=-3

You might be interested in

Solve for the value of X in 9^x+4(3^x+1)+27=0

worty [1.4K]

Answer:

No solutions

Step-by-step explanation:

$9^x + 4(3^x + 1) + 27 = 0\\3^{2x} + 4 \cdot 3^x + 31 = 0$

Substitute 3^x with t and we get.

$t^2 + 4t + 31 = 0\\\triangle = 16 - 4 \cdot 31 = -108 < 0 => t_{12} \notin R => x \notin R$

3 0

3 years ago

1 1/2 is_____% of 7 1/2

Xelga [282]

Answer:

1 1/2 is__11/15___% of 7 1/2

Step-by-step explanation:

Given

Number - $7\frac{1}{2} = \frac{15}{2}$

Let X % of $\frac{15}{2} = \frac{11}{2}$

X % is thus equal to

$\frac{11}{2} * \frac{2}{15} \\\frac{11}{15}$

5 0

2 years ago

Use the function to solve the question. What is f(-3) ?

ohaa [14]

Answer:

-3 f

ithink

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

The length of a rectangle is 4 inches longer than its width. The area of the rectangle is 12 square inches. What are the length

azamat

Answer: B) w(4+w)=12

Step-by-step explanation: Because the formula for area is length times width, the expression used to find it would by w•l. If L=4+W, the equation for area in this question is w(4+w)=12

6 0

3 years ago

Someone please help me I suck @ simplifying thank you

ycow [4]

The anwer is 67/72 and can not be simpled any more

5 0

2 years ago