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3 years ago

How to do frackions , percents, and how to convert frackions.

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

6 0

Answer:

To convert a decimal to percent, we multiply the decimal by 100. To convert a fraction to decimal, we divide the numerator by the denominator using long division and to convert a fraction to percent, we convert the fraction to decimal and the decimal to percent.

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I need help with this question

mariarad [96]

Answer:

133

Step-by-step explanation:

Answer is 133

6 0

3 years ago

Read 2 more answers

Need help with two of these! Thank you

astraxan [27]

Step-by-step explanation:

17) 3x+5-12+4x+2x

3x+4x+2x +5-12

8x-7

if x =6

8*6-7 =48-7

= 41

18.) 9(3x-4y+8)

27x-36y+72

6 0

2 years ago

PLZ HELP NOW!!!!!!

adell [148]

A right triangle ABC is formed when we join three points around a lake. Length of the side AC = 6 miles. Length of the side BC = 2 miles. We have to find Length of side AB.Using Pythagorean theorem for Right triangle ABC , Right angled at B→AB² + BC²= AC²→ AB² + 2²= 6²→ AB² = 36 - 4→ AB²= 32→ AB = √ 32→→AB = 5.66 (approx)Option (B) AB = 5.66 is Right choice.

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2 years ago

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Commute times in the U.S. are heavily skewed to the right. We select a random sample of 500 people from the 2000 U.S. Census who

tresset_1 [31]

Answer:

|t| = 2.739 > 1.972 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

The researchers able to conclude from this data that the mean commute time in the U.S. is less than half an hour

Step-by-step explanation:

Step(i):-

Given sample size n = 500

Given data

mean of the sample x⁻ = 27.6 minutes

Standard deviation of the sample (S) = 19.6 minutes

Mean of the Population 'μ' = half an hour or 30 minutes

Level of significance ∝ =0.05

t₀.₀₅ = 1.972

Step(ii):-

Null hypothesis :H₀: μ= 30

Alternative Hypothesis :H₁: μ < 30

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{27.6 -30}{\frac{19.6}{\sqrt{500} } }$

t = - 2.739

|t| = |-2.739| = 2.739

Final answer:-

|t| = 2.739 > 1.972 at 0.05 level of significance

Null hypothesis is rejected at 0.05 level of significance

The researchers able to conclude from this data that the mean commute time in the U.S. is less than half an hour

5 0

3 years ago

Amanda’s jewelry box is in the shape of a cube that has 6-inch edges.What is the volume of Amanda’s jewelry box?

erastovalidia [21]

6^3 (or 6 to the 3rd power) is 216. The volume is 216 inches.

8 0

2 years ago