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3 years ago

Can someone help me please ?????

Mathematics

1 answer:

Nastasia [14]3 years ago

4 0

Answer:

yes

Step-by-step explanation:

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Anyone ??? Please help !!

solmaris [256]

Because eating out is a luxary, not a nessecity

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3 years ago

Given that f(x) = 2x − 5, find the value of x that makes f(x) = 15.

nexus9112 [7]

2x-5=15
2x=20
x=10
the answer is B

8 0

3 years ago

Write each expression as an algebraic (nontrigonometric) expression in u, u > 0.

max2010maxim [7]

Answer:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0$

Step-by-step explanation:

We want to write the trignometric expression:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)\text{ where } u>0$

As an algebraic equation.

First, we can focus on the inner expression. Let θ equal the expression:

$\displaystyle \theta=\sec^{-1}\left(\frac{u}{10}\right)$

Take the secant of both sides:

$\displaystyle \sec(\theta)=\frac{u}{10}$

Since secant is the ratio of the hypotenuse side to the adjacent side, this means that the opposite side is:

$\displaystyle o=\sqrt{u^2-10^2}=\sqrt{u^2-100}$

By substitutition:

$\displaystyle= \sin(2\theta)$

Using an double-angle identity:

$=2\sin(\theta)\cos(\theta)$

We know that the opposite side is √(u² -100), the adjacent side is 10, and the hypotenuse is u. Therefore:

$\displaystyle =2\left(\frac{\sqrt{u^2-100}}{u}\right)\left(\frac{10}{u}\right)$

Simplify. Therefore:

$\displaystyle \sin\left(2\sec^{-1}\left(\frac{u}{10}\right)\right)=\frac{20\sqrt{u^2-100}}{u^2}\text{ where } u>0$

4 0

3 years ago

D. Calculate the volume of Laurel's new box. Show your thinking clearly.

bezimeni [28]

The correct answer is 336 cubic inches.
6•8•5=240
9-5=4
4•6/2=12
12•8=96
240+96=336

6 0

3 years ago

Sahib tried four different solutions to the matching problem. Which of his four answers is correct?

ANEK [815]

Your answer is correct

answer is D. last one.

8 0

3 years ago

Read 2 more answers