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daser333 [38]
3 years ago
8

What Is the value of 3^3 +7(2x-6) when x=4

Mathematics
1 answer:
Airida [17]3 years ago
5 0

Answer:

18? i don't think it's right but i tried mental math

Step-by-step explanation:

PEMDAS

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For each equation, determine whether it represents a direct variation, an inverse variation, or neither.
Murljashka [212]

Direct variation is written in the form y = k * x or x = y * k. And, inverse variation is written in the form y = k/x or x = y/k.

For the first problem, if we isolated the y, we would get:

4y = 3x - 1

y = (3/4)x - 1/4

This is written as y = mx + b, which isn’t the form of direct or inverse variation, so the answer is NEITHER.

For the second equation, we could divide by 2 on both sides to isolate x and see if it is in the correct form:

x = 4/y

This is inverse form, so the second question is INVERSE with a constant of variation as 4.

8 0
3 years ago
1/2(7x-8)+2x =2-(10x+4
geniusboy [140]
<span>1/2(7x-8)+2x =2-(10x+4)
Distribute
(7x-8)/2 + 2x = 2 -10x -4
combine like terms
(7x - 8)/2 + 2x = -10x - 2
Multiply both sides by 2
7x - 8 + 4x = -20x -4
Combine like terms
11x - 8 = -20x - 4
add 8 to both sides
11x = -20x + 4
add 20x to both sides
11x + 20x = 4
combine like terms
31x = 4
divide both sides by 31
x = 4/31 or </span><span>0.129.

Hope this helps :)</span>
8 0
3 years ago
What is the value of the expression? 9^2÷(-3)^0
stiv31 [10]
Step 1. Simplify 9^2 to 81
81 <span>÷ (-3)^0
Step 2. Use Rule of Zero: x^0 = 1
81 </span><span>÷ 1
Step 3. Simplify 
81</span>
5 0
3 years ago
A postcard has an area of 10 square inches. Two enlargements of the postcard have areas of 40 square inches and 160 square inche
insens350 [35]

Answer:

62

Step-by-step explanation:

3 0
3 years ago
Evaluate −5(12)^3x for x = 1.
Dmitrij [34]

Answer:

x=3

Step-by-step explanation:

4 0
3 years ago
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