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3 years ago

Simplify (2/3x3/5)-(3/4x1/6)

Mathematics

1 answer:

ira [324]3 years ago

4 0

Answer:

11/40

Step-by-step explanation:

2/5 − 3/4 (1/6)

2/5 − 1/8

= 11/40

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Scott wants to cover his patio with concrete pavers. If the patio is shaped like a trapezoid whose bases are 11 feet and 13 feet

GenaCL600 [577]

Answer:

Scott will need 168 ft² of pavers to cover his patio

Explanation:

Scott wants to cover a trapezoid-shaped patio

This means that:

To get the number of square feet of pavers he'll need, we need to get the area of his patio

Area of trapezium id calculated as follows:

$Area = \frac{base_{1}+base_{2}}{2} * height$

We are given that:

base₁ = 11 ft

base₂ = 13 ft

height = 14 ft

We now substitute with the givens to get the area as follows:

$Area = \frac{11+13}{2} * 14 = 168ft^2$

This means that:

Scott will need 168 ft² of pavers to cover his patio

Hope this helps :)

5 0

3 years ago

In a simple regression analysis for a given data set, if the null hypothesis β = 0 is rejected, then the null hypothesis ρ = 0 i

kati45 [8]

Answer:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degrees of freedom

And the statistic to check the significance of a coeffcient in a regression is given by:

$t_1 = \frac{\hat{\beta_1} -0}{S.E (\hat{\beta_1})}$

For this case is importantto remember that t1 and p value for test of slope coefficient is the same test statistic and p value for the correlation test so then the answer would be:

Always

Step-by-step explanation:

In order to test the hypothesis if the correlation coefficient it's significant we have the following hypothesis:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degrees of freedom

And the statistic to check the significance of a coeffcient in a regression is given by:

$t_1 = \frac{\hat{\beta_1} -0}{S.E (\hat{\beta_1})}$

For this case is importantto remember that t1 and p value for test of slope coefficient is the same test statistic and p value for the correlation test so then the answer would be:

Always

4 0

3 years ago

What is the constant in the equation y=2.7x

kirill [66]

Answer:

The constant is 2.7. This number never changes.

5 0

3 years ago

A local hospital tracked the blood type and gender of the patients they saw one day. Which is a fair statement?

notsponge [240]

Here's the choices...Cause i don't even know the answer to this question...

A)Over half of the patients seen on an average day had blood type O.Eliminate
B)Less than 1% of the patients seen on an average day had blood type AB.

C)Double the number of patients seen on an average day had blood type O than blood type B.

D)On an average day they will see about the same percentage of patients with types A and B.

3 0

3 years ago

Read 2 more answers

Can someone please help with this and explain how you the answer, I'll mark you as brainliest

ki77a [65]

Answer:

Step-by-step explanation:

I think...

4 0

3 years ago

Simplify (2/3x3/5)-(3/4x1/6)​

Simplify (2/3x3/5)-(3/4x1/6)