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4 years ago

D/3 = 19 what is d? d = ?

Mathematics

2 answers:

Dovator [93]4 years ago

6 0

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❖ d = 57

19*3 = 57

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dedylja [7]4 years ago

3 0

Answer: d=57

Step-by-step explanation:

d/3=19

multiply both sides by 3

d=57

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3. f(x) =(x-1)(x2+2) then f'() :

AlladinOne [14]

Answer:

$f'(x)=3x^2-2x+2$

Step-by-step explanation:

Assuming that the function is

$f(x)=(x-1)(x^2+2)$

First, we need to remove the parenthesis. Once this is done, we get

$f(x)=x^3-x^2+2x-2$

Now that the parenthesis are gone, we can differentiate each term. To do this, we can use the power rule, which states

$f(x)=x^n\\f'(x)=nx^{n-1}\\$

This gives us

$f'(x)=3x^2-2x+2$

3 0

4 years ago

Suav wants to use a sheet of fiberboard 27 inches long to create a skateboard ramp with a 19 ∘ ∘ angle of elevation from the gro

Triss [41]

The height of the ramp rise from the ground at its highest end to the nearest hundredth is 8.79 inches.

The situation forms a right angle triangle.

<h3>What is a right angle triangle?</h3>

A right angle triangle has one of its angles as 90 degrees. The sides can be found using trigonometric ratios.

Therefore, the hypotenuse of the right triangle formed is the length of the fiberboard.

The height of the ramp formed is the opposite side of the right triangle.

Hence,

sin 19° = opposite / hypotenuse

sin 19° = h / 27

cross multiply

h = 27 × sin 19°

h = 27 × 0.32556815445

h = 8.79034017034

h = 8.79 inches.

Therefore, the height of the ramp rise from the ground at its highest end to the nearest hundredth is 8.79 inches.

learn more on right triangle here: brainly.com/question/25566098

8 0

2 years ago

exis [7]

Answer:

Part 1) The length of the longest side of ∆ABC is 4 units

Part 2) The ratio of the area of ∆ABC to the area of ∆DEF is $\frac{1}{100}$

Step-by-step explanation:

Part 1) Find the length of the longest side of ∆ABC

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

The ratio of its perimeters is equal to the scale factor

Let

z ----> the scale factor

x ----> the length of the longest side of ∆ABC

y ----> the length of the longest side of ∆DEF

$z=\frac{x}{y}$

we have

$z=\frac{1}{10}$

$y=40\ units$

substitute

$\frac{1}{10}=\frac{x}{40}$

solve for x

$x=(40)\frac{1}{10}$

$x=4\ units$

therefore

The length of the longest side of ∆ABC is 4 units

Part 2) Find the ratio of the area of ∆ABC to the area of ∆DEF

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z ----> the scale factor

x ----> the area of ∆ABC

y ----> the area of ∆DEF

$z^{2}=\frac{x}{y}$

we have

$z=\frac{1}{10}$

$z^2=(\frac{1}{10})^2$

$z^2=\frac{1}{100}$

therefore

The ratio of the area of ∆ABC to the area of ∆DEF is $\frac{1}{100}$

3 0

3 years ago

The body temperature of adults are normally distributed with a mean of 98.6 f and a standard deviation of 0.71f what temperature

irina [24]

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7 0

2 years ago

PLEASE HELP ME I WOULD APPRECIATE IT SO MUCH AND I GIVE BRAINLIEST

zlopas [31]

A. A= 4

b. b= 5.6

c. c=4

d. e= 3.2

7 0

3 years ago

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