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3 years ago

Help me please?!!!!!!!!!

Mathematics

2 answers:

vlabodo [156]3 years ago

7 0

Answer:

Last option: f(x) = $\sqrt[5]{\frac{x}{7} }$

Hope this helps!

Basile [38]3 years ago

4 0

I think it’s the last one but I’m not sure

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Solve for t. -5 − 2t = 3t

allsm [11]

T is equal to -1.

Add 2t to both sides of the equation. -5 = 5t
Divide both sides of the equation by -5. 1 = -t
Multiply both sides of the equation by -1. -1 = t

4 0

3 years ago

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Which of the choices below is not a possible correlation coefficient?

fiasKO [112]

Answer:

The condition for r is the following:

$-1 \leq r \leq 1$

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

Step-by-step explanation:

The correlation coefficient is a measure of dispersion and is a value between -1 and 1, and is defined as:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The condition for r is the following:

$-1 \leq r \leq 1$

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

8 0

3 years ago

Which number is such that when it's ÷ 27 30 or 45 the remainder is always three

rewona [7]

Answer:

closest answer = 81

Step-by-step explanation:

81/27 = 3

81/30= 2.7

81/45 = 1.8

6 0

3 years ago

Find the lateral area for the pyramid with the equilateral base

likoan [24]

<h3>The lateral area for the pyramid with the equilateral base is 144 square units</h3>

Solution:

The given pyramid has 3 lateral triangular side

The figure is attached below

Base of triangle = 12 unit

Find the perpendicular

By Pythagoras theorem

$hypotenuse^2 = opposite^2 + adjacent^2$

Therefore,

$opposite^2 = 10^2 - 6^2\\\\opposite^2 = 100 - 36\\\\opposite^2 = 64\\\\opposite = 8$

Find the lateral surface area of 1 triangle

$\text{ Area of 1 lateral triangle } = \frac{1}{2} \times opposite \times base$

$\text{ Area of 1 lateral triangle } = \frac{1}{2} \times 8 \times 12\\\\\text{ Area of 1 lateral triangle } = 48$

Thus, lateral surface area of 3 triangle is:

3 x 48 = 144

Thus lateral area for the pyramid with the equilateral base is 144 square units

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3 years ago

A man bought a dozen boxes with 24 highlighter pens inside for $8 each box. He repacked five of those boxes into packages of 6 h

svetoff [14.1K]

He made $72

Hope this helps! :)

4 0

3 years ago

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