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3 years ago

I just need the answer plz

Mathematics

2 answers:

mario62 [17]3 years ago

4 0

Answer: i got −5s^3+2s^2−s−9

Step-by-step explanation:

Nonamiya [84]3 years ago

3 0

-5s^3+2s^2-s-9, ^=exponent

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Music lessons cost $20 per week. How much do 6 weeks of lessons cost? i need the expression

Darya [45]

Answer:

20+20+20+20+20+20= 120

Step-by-step explanation:

2^6 = 120 hope this helps! plz mark brainliest

7 0

3 years ago

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Trent's mom grave him $30. He earned another $12 completing chores. Trent spent $15 at the movie theater and $6 on lunch. How mu

cluponka [151]

30+12=42
15+6=21
42-21=21
Trent has $21 dollars left.

8 0

3 years ago

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Quick guys, I need some help on this

worty [1.4K]

Answer:

I think c

(not sure though)

3 0

3 years ago

Please solve the problem

jek_recluse [69]

Treat the matrices on the right side of each equation like you would a constant.

Let 2X + Y = A and 3X - 4Y = B.

Then you can eliminate Y by taking the sum

4A + B = 4 (2X + Y) + (3X - 4Y) = 11X

==> X = (4A + B)/11

Similarly, you can eliminate X by using

-3A + 2B = -3 (2X + Y) + 2 (3X - 4Y) = -11Y

==> Y = (3A - 2B)/11

It follows that

$X=\dfrac4{11}\begin{bmatrix}12&-3\\10&22\end{bmatrix}+\dfrac1{11}\begin{bmatrix}7&-10\\-7&11\end{bmatrix} \\\\ X=\dfrac1{11}\left(4\begin{bmatrix}12&-3\\10&22\end{bmatrix}+\begin{bmatrix}7&-10\\-7&11\end{bmatrix}\right) \\\\ X=\dfrac1{11}\left(\begin{bmatrix}48&-12\\40&88\end{bmatrix}+\begin{bmatrix}7&-10\\-7&11\end{bmatrix}\right) \\\\ X=\dfrac1{11}\begin{bmatrix}55&-22\\33&99\end{bmatrix} \\\\ X=\begin{bmatrix}5&-2\\3&9\end{bmatrix}$

Similarly, you would find

$Y=\begin{bmatrix}2&1\\4&4\end{bmatrix}$

You can solve the second system in the same fashion. You would end up with

$P=\begin{bmatrix}2&-3\\0&1\end{bmatrix} \text{ and } Q=\begin{bmatrix}1&2\\3&-1\end{bmatrix}$

3 0

3 years ago

The cost to rent a moving truck is a flat fee of $25 plus $0.60 per mile. The equation c = 25 + 0.6m models the cost, c, in doll

FrozenT [24]

Answer:

Independent variable: C

Dependent Variable: M

Step-by-step explanation:

Lets begin with the Independent variable, C. C is moreover a result, so it remains as a dormant number that is yet to be known. M which is the dependent variable, contributes to the corresponding number we call the cost. When M , a quantity that is being manipulated the number 0.6, multiplies "per mile" plus 25. The actual expression is 25 + 0.6m, and the indpendent variable is known as the numerical coefficient.

5 0

3 years ago