3 years ago

Please help me it’s due today!

Mathematics

1 answer:

shepuryov [24]3 years ago

3 0

Answer:

Check explanation

Step-by-step explanation:

$\frac{3(x+2)}{3(x+3)(x+3)}*\frac{(x+3)(x-4)}{(x+2)(x-2)}$

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the cost of a candle varies directly with the volume of a candle. if a candle with a volume of 80cm^3 costs $12, what would be t

a_sh-v [17]

$120 \div 8. = 1.5$

$12 \times 1.5 = 18$

the answer is $18

good luck

7 0

3 years ago

If x2 = 40, what is the value of x?

Amanda [17]

The value of X is 20

if you mean 2x=40 x=20

7 0

3 years ago

What is more 7 7/9 or 7 4/5?

bezimeni [28]

First, turn the mixed numbers into improper fractions.

7 7/9 = 70/9

7 4/5 = 39/5

Second, find common denominators.

70/9 = 350/45

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351/45 > 350/45

Therefore, 7 4/5 is greater.

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3 years ago

A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She t

Kaylis [27]

Answer: 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

Step-by-step explanation:

Given :

Sample size(n) = 17

Sample mean = 20000

Sample standard deviation = 1,500

5% confidence

∴ $\frac{\alpha}{2}$ = 0.025

Degree of freedom ( $d_{f}$ ) = n-1 = 16

∵ Critical value at ( 0.025 , 16 ) = 2.12

∴ 95% confidence interval = mean ± $Z_{c}$ $\times$ $\frac{\sigma}{\sqrt{n} }$

Critical value at 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

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3 years ago

What is 24 percent of 99

yan [13]

Answer:

23.76%

Step-by-step explanation:

6 0

2 years ago