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Kay [80]
3 years ago
12

3x – 2y = 7 y = x + 2 What the answer to this?

Mathematics
1 answer:
kogti [31]3 years ago
5 0

Answer:

{x,y}={−3,−1}

Step-by-step explanation:

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Please solve for brainlist
laiz [17]

Answer:

E=10.75h-6.5

Step-by-step explanation:

10.75h for every hour she work

-6.5 for the bus fare

7 0
2 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
2 years ago
Rewrite each expression without using absolute value notation.<br><br> |x-y| if x&gt;y
anyanavicka [17]

The absolute expression |x - y| is rewritten in the form of without using absolute value notation will be x - y.

<h3>What is an absolute function?</h3>

The absolute function is also known as the mode function. The value of the absolute function is always positive.

The absolute function is given as

f(x) = | x |

If the value inside the mode operator is greater than zero, then simply the mode operator is eliminated.

The notation of the absolute function is given below.

|x - y| If x>y

Then the absolute function is given as,

|x - y| = x - y

The absolute expression |x - y| is rewritten in the form of without using absolute value notation will be x - y.

More about the absolute function link is given below.

brainly.com/question/10664936

#SPJ1

4 0
11 months ago
Round 4.16 to the nearest whole number?
frutty [35]
4.16 rounded to the nearest whole is 4.2.
3 0
3 years ago
Plsss help no spam.<br><br><br><br>.....................​
gregori [183]

Answer:

Third one.

x=6 y=12

Ok!

7 0
3 years ago
Read 2 more answers
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