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3 years ago

Tia cycles 90 miles in total on

Mathematics

1 answer:

Hoochie [10]3 years ago

3 0

Tia travels 60 miles on Monday.

Step-by-step explanation:

Total distance = 90 miles

Let,

Distance on Monday = x

Distance on Tuesday = x/2

According to given statement;

$x+\frac{x}{2}=90$

Solving the equation for the value of x;

$\frac{2x+x}{2}=90\\$

Multiplying both sides by 2;

$3x=180\\x=\frac{180}{3} \\x=60$

Tia travels 60 miles on Monday.

Keywords: Addition, Division.

Learn more about addition at;

#LearnwithBrainly

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3 years ago

BRAINLYYYY PLUS 100 PointsThe difference between two numbers is 84 and their sum is 278. What are the numbers? Hint( answer is x

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Answer:

x = 181 and y = 97

Step-by-step explanation:

let called the first number is x

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2 years ago

What is 25 percent of 32?

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Step-by-step explanation:

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3 years ago

A safety officer wants to prove that μ = the average speed of cars driven by a school is less than 25 mph. Suppose that a random

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Answer:

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The degrees of freedom are given by:

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The p value for this case would be given by:

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Information given

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$s=2.2$ represent the sample standard deviation

$n=14$ sample size

$\mu_o =25$ represent the value that we want to test

t would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to verify

We want to cehck if the true mean is lees than 25 mph, the system of hypothesis would be:

Null hypothesis: $\mu \geq 25$

Alternative hypothesis: $\mu < 25$

The statistic would be given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing the info given we got:

$t=\frac{24-25}{\frac{2.2}{\sqrt{14}}}=-1.70$

The degrees of freedom are given by:

$df=n-1=14-1=13$

The p value for this case would be given by:

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