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3 years ago

Help please quickly!!!!1!

Mathematics

2 answers:

ollegr [7]3 years ago

7 0

There is no questions or anything

Sindrei [870]3 years ago

5 0

there is no question here

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How do you turn 13/25 (fraction) into a decimal?

Karo-lina-s [1.5K]

13/25

first off, to turn a fraction into a decimal, you divide numerator by denominator

in this case, 13/25=.52

answer is .52

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3 years ago

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-2x+15y=-24 2x+9y=24 solve the system of equation

zhuklara [117]

Answer:

x = 12, y = 0

Step-by-step explanation:

Use elimination.

24y = 0

y = 0

Then plug back into the second equation.

2x + 9(0) = 24

2x = 24

x = 12

Plug back into the first equation to check.

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3 years ago

A right triangle with angle measures of 30°, 60°, and 90° What is the measure of the angle

mr Goodwill [35]

Answer:

30, 60, and 90

Step-by-step explanation:

because it is reflected it would be the same because it is congruent

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3 years ago

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A researcher wants to study the average miles run per day for marathon runners. In testing the hypotheses: H0: μ = 25 miles vs.

masya89 [10]

Answer:

The calculated value |Z| = 1.325 < 1.881 at 0.03 level of significance

Null hypothesis is accepted

Alternative hypothesis is rejected

A researcher wants to study the average miles run per day for marathon runners is 25

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 36

Given mean of the sample x⁻ = 22.8 miles

Given mean of the Population 'μ' = 25

Given standard deviation of the Population 'σ' = 10

Null hypothesis:-H₀: μ = 25

Alternative Hypothesis:H₁:μ ≠ 25

Level of significance = 3 % or 97%

The critical value Z₀.₉₇ = 1.881

Step(ii):-

Test statistic

$Z = \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{22.8 - 25}{\frac{10}{\sqrt{36} } }$

Z = -1.325

|Z| = |-1.325| = 1.325

The calculated value |Z| = 1.325 < 1.881 at 0.03 level of significance

Null hypothesis is accepted

Alternative hypothesis is rejected

conclusion:-

A researcher wants to study the average miles run per day for marathon runners is 25

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3 years ago

Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of

Svetradugi [14.3K]

Answer:

200 dollars,

I am assuming that your question goes like this: "Kiersten runs a website that helps people learn programming. Every month, Kiersten reveives a subscription fee of $10, $10 from each of the subscribers to her website. Last month, the website had 100 subscribers. This month, 30 new members joined the website, and 10 members cancelled their subscription. How much money will Kiersten's online business earn this month?

Step-by-step explanation:

Since her website had 100 subscribers last month, she earned $1000 (100 x 10). This month, 30 members joined and 10 members left, so in total, she gained 20 subscribers for a total of 120 subscribers this month. So she made 1200 dollars this month (100 x 120). She earned 200 more dollars this month since 1200-1000=20.

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3 years ago