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2 years ago

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Mathematics

1 answer:

oee [108]2 years ago

3 0

Answer:

Step-by-step explanation:

This is simple: we need to only do 2 steps

1) Convert to feet

2) Get the area

1) Converting to feet is just

$(7*3, 4*3)\\$ (ignore the use of this it's just to show the differnt things to multiply

Now we have a length of 21 and a width of 12 FEET.

2) To solve for the area, we need to multiply both dimensions.

$21*12=252$

So the answer is 252^2 FEET (DONT FORGET THE UNIT SQUARE FEET)

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Find the unit rate for each graph. i need an answer FAST!!!

hichkok12 [17]

Answer:

1 row for 13 charts

Step-by-step explanation:

2 rows/26charts=1row/13charts

6 0

3 years ago

The area of a square is 1 square foot. What is the length of each side of the square? a. 1 ft. b. 2 ft. c. 3 ft. d. 4 ft.

sesenic [268]

Answer:

A. 1ft

Step-by-step explanation:

1 x 1 = 1 squared

So 1 foot x 1 foot = 1 square foot

4 0

3 years ago

Read 2 more answers

In a test of the effectiveness of garlic for lowering cholesterol, 8181 subjects were treated with raw garlic. Cholesterol leve

xz_007 [3.2K]

Answer:

With garlic treatment, the mean change in LDL cholesterol is not greater than 0.

Step-by-step explanation:

The dependent t-test (also known as the paired t-test or paired samples t-test) compares the two means associated groups to conclude if there is a statistically significant difference amid these two means.

In this case a paired t-test is used to determine the effectiveness of garlic for lowering cholesterol.

A random sample of 81 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment.

The hypothesis for the test can be defined as follows:

H₀: With garlic treatment, the mean change in LDL cholesterol is not greater than 0, i.e. d ≤ 0.

Hₐ: With garlic treatment, the mean change in LDL cholesterol is greater than 0, i.e. d > 0.

The information provided is:

$\bar d=0.40\\SD_{d}=16.2\\\alpha =0.01$

Compute the test statistic value as follows:

$t=\frac{\bar d}{SD_{d}/\sqrt{n}}\\\\=\frac{0.40}{16.2/\sqrt{81}}\\\\=0.22$

The test statistic value is 0.22.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

Compute the p-value of the test as follows:

$p-value=P(t_{n-1}>0.22)\\=P(t_{80}>0.22)\\=0.4132$

*Use a t-table.

The p-value of the test is 0.4132.

p-value= 0.4132 > α = 0.01

The null hypothesis was failed to be rejected.

Thus, it can be concluded that with garlic treatment, the mean change in LDL cholesterol is not greater than 0.

3 0

3 years ago

15. How would .89 be put as a fraction?

NikAS [45]

Answer:

0.89 as a fraction would equal: $\frac{117}{500}$

0.234 as a fraction would equal: $\frac{117}{500}$

0.6 as a fraction would equal: $\frac{6}{10}$

3 0

3 years ago

A population has a standard deviation of 3.26. What is the approximate standard error of the mean for a sample size of 35?

PIT_PIT [208]

Answer:

0.55

Step-by-step explanation:

Standard Error of the mean= Standard deviation/sample size

$=\frac{3.26}{\sqrt{35} }$

$=\frac{3.26}{5.916}$

$=0.55104057$

About 0.55

Please give me brainliest, I really need it.

4 0

3 years ago