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3 years ago

Solve the following word problem using two variables. Show each step of your work.

Mathematics

1 answer:

masha68 [24]3 years ago

7 0

Answer:

John is 16 and Maya is 11

Step-by-step explanation:

x=Maya's age

x+5=John's age

x+x+5=27

2x+5=27

-5 -5

2x=22

/2 /2

x=11

x+5=

11+5= 16

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What information is shown on the horizontal axis of a bar chart?

Bad White [126]

The information shown on the horizontal axis of a bar chart is the qualitative class labels.

<h3>What is a bar chart?</h3>

A bar chart is a graph that is used to represent data graphically using rectangular bars. A bar charts has two axis:

The vertical axis or the y axis which shows the frequency of the observations.
The horizontal axis or the x axis shows the qualitative class labels.

To learn more about bar charts, please check: brainly.com/question/14473126

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2 years ago

A random sample of 20 married women showed that the mean time spent on housework by them was 29.8 hours a week with a standard d

DanielleElmas [232]

Answer:

95% confidence interval for the mean time spent on housework per week by all married women.

( 26.66 , 32.94)

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given random sample size 'n' = 20

Mean of the sample (x⁻ ) = 29.8 hours

Standard deviation of the sample (S) = 6.7

Given Margin of error = 3.14

<u><em>Step(ii):</em></u>-

95% confidence interval for the mean is determined by

$(x^{-} - t_{0.05} \frac{S}{\sqrt{n} } , x^{-} +t_{0.05} \frac{S}{\sqrt{n} })$

We know that margin of error is determined by

$M.E = \frac{t_{0.05}XS.D }{\sqrt{n} } = 3.14$

Now 95% confidence interval for the mean time spent on housework per week by all married women.

$(29.8 - 3.14 , 29.8+3.14)$

( 26.66 , 32.94)

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3 years ago

I need help with this, please.

notsponge [240]

Is it for the fraction part? to get rid of the fractions just multiply both sides by the denominator.

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