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3 years ago

Help please, i need it asap. tyty

Mathematics

1 answer:

mylen [45]3 years ago

8 0

Answer:

Step-by-step explanation:

$\frac{3}{x}$ = $\frac{2}{5}$

2x = 15

x = 7.5

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Solve for f<br><br> d=16ef^2

vitfil [10]

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3 years ago

The dashed triangle is a dilation image of the solid triangle. What is the scale factor?

WARRIOR [948]

Answer:

1/2

Step-by-step explanation:

Take any point from the original, like (2,2) If the new point is (1,1) then the change would be 1/2

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3 years ago

7. Sarah draws a card from a standard deck, throws the card away, and then draws another card.

VashaNatasha [74]

Answer:

dependent

Step-by-step explanation:

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2 years ago

Due to the economy and not wanting to eliminate any jobs, all state employees were asked to accept a 4.5% reduction in their sal

jeka94

Answer: The secretary's salary prior to the reduction was $42,000.

Step-by-step explanation:

Hi, to answer this question we have to write an equation:

The original secretary's salary (x) multiplied by the percentage reduction in decimal form (4.5/100) must be equal to the amount of the reduction (1890)

Mathematically speaking:

x (4.5/100)= 1890

Solving for x:

x (0.045)= 1890

x = 1890/ 0.045

x = 42,000

The secretary's salary prior to the reduction was $42,000.

7 0

2 years ago

Define the function

miss Akunina [59]

Given that

$g(x) = x^3 + x$

the inverse $g^{-1}(x)$ is such that

$g\left(g^{-1}(x)\right) = g^{-1}(x)^3 + g^{-1}(x) = x$

$g\left(f(x)\right) = f(x)^3 + f(x) = x$

Differentiating both sides using the chain rule gives

$3f(x)^2f'(x) + f'(x) = 1 \\\\ f'(x) \left(3f(x)^2+1\right) = 1 \\\\ f'(x) = \dfrac1{3f(x)^2+1}$

Then the derivative of <em>f</em> at 2 is

$f'(2) = \dfrac1{3f(2)^2+1} = \boxed{\dfrac14}$

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2 years ago