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iVinArrow [24]
3 years ago
10

Michael tracks his pay. He has already earned $97.75. He determined that the expression 97.75+17.80h represents the amount of mo

ney, in dollars, he has earned at hours.
Based on the given expression, about how many hours does it take Michael to earn 678.25?
Mathematics
1 answer:
iren2701 [21]3 years ago
5 0
33 hrs. Because 678.25-97.75= 580.5 and when you divide 580.5 by 17.80 you get 32.61 and you round that up to get 33 hrs
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Solve the matrix equation X-A=B for X if A= [8, -2, -3, 9, -1, 5] and B= [0, 7, 2 -3, -7, -1]
djverab [1.8K]

If <em>X</em> - <em>A</em> = <em>B</em>, then <em>X</em> = <em>A</em> + <em>B</em>. So

X = \begin{bmatrix}8&-2\\-3&9\\-1&5\end{bmatrix} + \begin{bmatrix}0&7\\2&-3\\-7&-1\end{bmatrix} \\\\ X = \begin{bmatrix}8+0&-2+7\\-3+2&9-3\\-1-7&5-1\end{bmatrix} \\\\ X = \begin{bmatrix}8&5\\-1&6\\-8&4\end{bmatrix}

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3 years ago
Solve for x: −2(x + 3) = −2(x + 1) − 4. (1 point)
NeTakaya

Answer:

Hey there!

Let's solve our equation below.

-2(x+3)= -2(x+1)-4

Let's distribute the parentheses.

-2x-6=-2x-2-4

We combine like terms.

-2x-6=-2x-6

We add 6 to both sides.

-2x=-2x

We divide both sides by -2

x=x

If, when solving an equation, you get one number or variable that equals itself, there are infinitely many solutions.

We can plug anything into this equation and it will always equal to same things, since x is just equal to whatever x value you want.

Therefore, there are infinitely many solutions.

I hope this helps!

8 0
3 years ago
Gcdbvfgvfnc vc vfnfbnfnbvgn
jonny [76]

no way dude really? thats so cool

7 0
3 years ago
1 − 3(3 + 6b) = −6(3b + 1) − 2 <br> will get brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!
Zarrin [17]

Answer:

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Step-by-step explanation:

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3 years ago
Marta is solving the equation s=2πrh+2πr^2 for h. which should be the result?
Marta_Voda [28]

Answer: First option.

Step-by-step explanation:

Marta needs to subtract 2\pi r^2 from  both sides of the equation:

s=2\pi rh+2\pi r^2

s- 2\pi r^2=2\pi rh+2\pi r^2- 2\pi r^2

s- 2\pi r^2=2\pi rh

Now she needs to divide both sides of the equation by 2\pi r, then:

h=\frac{s- 2\pi r^2}{2\pi r}

Rewriting:

h=\frac{s}{2\pi r}-\frac{2\pi r^2}{2\pi r}

Simplifying, she should get:

h=\frac{s}{2\pi r}-r

This matches with the first option.

6 0
4 years ago
Read 2 more answers
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