3 years ago

What is the value of the rational expression below when xis equal to 4?

Mathematics

1 answer:

horrorfan [7]3 years ago

4 0

The answer is the letter c. 3

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the class kept track of rainy and sunny days. During the 54 days, classified rainy or sunny, the ratio of rainy days is 7 to 14.

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There are 36 sunny days

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3 years ago

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A freezer was sold during a clearance sale sale for $387.50. If the freezer was sold at a discount of 50/3%, what was the list p

telo118 [61]

Answer:

$465

Step-by-step explanation:

100 - 50/3 = 250/3

250/3 ÷ 100 = 5/6

$387.50 ÷ 5/6 = $465

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3 years ago

If the side of a rectangular prism is doubled, how would this affect the area? How about the volume?

professor190 [17]

Answer:

Step-by-step explanation:

The area will be increased by 4 times and volume will be increased by 8 times

Area of rectangular prism = 2 (lb+bh +hl)

When sides are doubled, Area = 2 (2l * 2b +2b *2h + 2h*2l)

= 4 * 2 (lb+bh +hl)

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When sides are doubled, Volume = 2l * 2h * 2b = 8 lbh

6 0

3 years ago

3 (x + 3) + 5 = 3x + 1 + 4

MrRa [10]

$\text{Solve for x:}\\\\3 (x + 3) + 5 = 3x + 1 + 4\\\\\text{Use the distributive property}\\\\3x+9+5=3x+1+4\\\\\text{Combine like terms}\\\\3x+14=3x+5\\\\\text{Subtract 3x from both sides}\\\\14=5\\\\\boxed{\text{Answer: No solution}}$

4 0

3 years ago

Find a4 for the arithmetic series with S4=-36 and a1=9

erastova [34]

ANSWER

The 4th term is -27

EXPLANATION

The sum of the first n-terms of an arithmetic sequence is

$S_n= \frac{n}{2} (2a_1+d(n-1))$

It was given that,

$S_4 = - 36$

$a_1 = 9$

$- 36= \frac{ 4}{2} (2 \times 9+d(4-1))$

$-36=2(18+3d)$

$-18=18+3d$

$-18 - 18 = 3d$

$3d = - 36$

$d = - 12$

The n-term is given by:

$a_n=a_1+ (n-1)d$

We substitute n=4 to get,

$a_4=9+ (4-1) \times -12$

$a_4=9+ 3\times -12$

$a_4=9 - 36$

$a_4= - 27$

5 0

3 years ago