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3 years ago

Rewrite in Standard Form. 1. y = (x - 3)(x+10)

Mathematics

2 answers:

densk [106]3 years ago

6 0

Answer:

Heres your answer y=x^2 +7x-30

Serhud [2]3 years ago

3 0

Answer:

y=x^2 +7x-30

Step-by-step explanation:

Hope this helps

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There are 3 consecutive odd integers with a sum of 45. What is the greatest of the 3 integers

jeyben [28]

Answer:

15,17,19

so the answer is 17

3 0

3 years ago

4. If it costs $18 for 24 pounds of grapes, how much would 8 pounds cost? What is the unit rate?

Anon25 [30]

Answer:

144 and 18

Step-by-step explanation:

18 ×24=432÷3=144

7 0

3 years ago

HELP DUE IN 20 MINS! x = ??

DerKrebs [107]

$\huge{ \mathcal{ \underline{ Answer} \: \: ✓ }}$

We know,

$27 \times (x + 27) = 36 {}^{2}$

$x + 27 = \dfrac{1296}{27}$

$x + 27 = 48$

$x = 21$

______________________

$\mathrm{ ☠ \: TeeNForeveR \:☠ }$

4 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

Solve the equation for y. 3x + jy= 7

ozzi

Answer:

$y=\frac{7-3x}{j}$

Step-by-step explanation:

First, subtract 3x. This leaves you with jy=7-3x. Then, divide by j, leaving you with $y=\frac{7-3x}{j}$ .

3 0

3 years ago