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Anarel [89]
3 years ago
10

What is 25% of 10? can someone explain how to do the problem?

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
7 0
25/100 =0.25
10 x 0.25= 2.5
hjlf3 years ago
6 0
The formula for the problem is % over one hundred equals is over of. this means you would set it up like 25/100 is equal to (a variable in this case because you don’t know is) over 10. then you solve for the variable. remember that you’re trying to get the variable by itself. if you need not help call me 2562664950
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Columbia,South Carolina, is located at 34degrees north latitude. Use the equation to estimate the average annual snowfall for Co
lana66690 [7]

Answer:

Step-by-step explanation: I cannot provide an answer due to insufficient evidence.

7 0
3 years ago
b) Your uncle Jim lives in England, where the current exchange rate is 1.64 US dollars for each British pound. Solve for the amo
noname [10]
Since we need your monthly bill we will call it the variable B for now, (Unless you have the bill, if so replace it with the variable)
Multiply 1.64 x B since the exchange rate is different than the US bill,
For example, say your bill is $100 in the U.S.
You do 1.64 x 100 = A monthly bill of $164 if you lived in Britain 
8 0
3 years ago
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A researcher compares two compounds (1 and 2) used in the manufacture of car tires that are designed to reduce braking distances
wariber [46]

Answer:

Step-by-step explanation:

Hello!

The objective of this experiment is to compare two compounds, designed to reduce braking distance, used in tire manufacturing to prove if the braking distance of SUV's equipped with tires made with compound 1 is shorter than the braking distance of SUV's equipped with tires made with compound 2.

So you have 2 independent populations, SUV's equipped with tires made using compound 1 and SUV's equipped with tires made using compound 2.

Two samples of 81 braking tests are made and the braking distance was measured each time, the study variables are determined as:

X₁: Braking distance of an SUV equipped with tires made with compound one.

Its sample mean is X[bar]₁= 69 feet

And the Standard deviation S₁= 10.4 feet

X₂: Braking distance of an SUV equipped with tires made with compound two.

Its sample mean is X[bar]₂= 71 feet

And the Standard deviation S₂= 7.6 feet

We don't have any information on the distribution of the study variables, nor the sample data to test it, but since both sample sizes are large enough n₁ and n₂ ≥ 30 we can apply the central limit theorem and approximate the distribution of both variables sample means to normal.

The researcher's hypothesis, as mentioned before, is that the braking distance using compound one is less than the distance obtained using compound 2, symbolically: μ₁ < μ₂

The statistical hypotheses are:

H₀: μ₁ ≥ μ₂

H₁: μ₁ < μ₂

α: 0.05

The statistic to use to compare these two populations is a pooled Z test

Z= \frac{(X[bar]_1-X[bar]_2)-(Mu_1-Mu_2)}{\sqrt{\frac{S^2_1}{n_1} +\frac{S^2_2}{n_2} } }

Z ≈ N(0;1)

Z_{H_0}= \frac{69-71-0}{\sqrt{\frac{108.16}{81} +\frac{57.76}{81} } }= -1.397

The rejection region if this hypothesis test is one-tailed to the right, so you'll reject the null hypothesis to small values of the statistic. The critical value for this test is:

Z_{\alpha  } = Z_{0.05}= -1.648

Decision rule:

If Z_{H_0} > -1.648 , then you do not reject the null hypothesis.

If Z_{H_0} ≤ -1.648 , then you reject the null hypothesis.

Since the statistic value is greater than the critical value, the decision is to not reject the null hypothesis.

At a 5% significance level, you can conclude that the average braking distance of SUV's equipped with tires manufactured used compound 1 is greater than the average braking distance of SUV's equipped with tires manufactured used compound 2.

I hope you have a SUPER day!

4 0
3 years ago
Find three decimals that make the number sentence true for 1.75&gt;
Tpy6a [65]

Answer:

1.74

1.71

1.67

Step-by-step explanation:

Because....

1.75>1.74

1.75>1.71

1.75>1.67

8 0
3 years ago
Jolie uses 2 tomatoes everyday to prepare her salad if n equal of tomatoes Jolie had before she made her salad and c equals the
Lana71 [14]
N-2=c
n is the number of tomatoes Jolie starts with and c is what Jolie has left after making the salad.
7 0
3 years ago
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