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3 years ago

Help??? I don't know the answer ❗️

Mathematics

1 answer:

cricket20 [7]3 years ago

3 0

The answer is definitely 24 inches

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Please help thank you!

Setler79 [48]

Answer:

(d) WEAK NEGATIVE ASSOCIATION.

Step-by-step explanation:

Pearson correlation (r) is defined as a factor which measures the linear dependence between two variables (x and y). It's also known as a parametric correlation.

Here, r = -0.19

Now, as r is NEGATIVE.

⇒ As the value of x increases , value of y decreases.

⇒There is a NEGATIVE ASSOCIATION.

Now as the value of r is between 0 and ( -1). So the factor of variation is very small.

Hence, it is WEAK NEGATIVE ASSOCIATION.

7 0

4 years ago

Suppose a new regulation that a maximum angle of a ramp for a wheelchairs is 8°. At least how long must the new ramp be? Round t

Llana [10]

Answer:

The length of the ramp is at least 17.2 feet

Step-by-step explanation:

See attachment for the appropriate diagram.

The length of the ramp is represented with z

So, we have:

$\theta = 8$

$BC = 2.4$

Required

Find z

To find z, we make use of sine formula:

$sin\theta = \frac{BC}{z}$

Make z the subject

$z= \frac{BC}{sin\theta }$

So:

$z= \frac{2.4}{sin(8)}$

$z= \frac{2.4}{0.1392}$

$z= 17.2ft$

<em>The length is at least 17.2 feet</em>

3 0

3 years ago

Half a number plus 2.5 times that number equals 18. What is the number?

Sholpan [36]

Answer:

It's 6.

Step-by-step explanation:

this was so confusing

4 0

3 years ago

What is 23% of 256? please help

Anastasy [175]

So first you need to turn the percent into a decimal. So 23% would be 0.23 because you divide 23 by 100 to turn it into a decimal. Now you multiply 0.32 and 256. So:

$0.23 *256=58.88$

So your answer would be 23% of 256 is 58.88. I hope this helps! =)

7 0

4 years ago

Simplify the product. 5a^2(3a^4 + 3b)

Irina-Kira [14]

Answer:

15a^6 + 15a²b

3 0

3 years ago