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mote1985 [20]
3 years ago
14

Please help! I think I know the answer but I don't trust myself xD (Theres a screenshot attached)

Mathematics
2 answers:
AleksAgata [21]3 years ago
3 0

Answer:

the second one

Step-by-step explanation:

tigry1 [53]3 years ago
3 0
Answer:

The last one

Explanation:

-7 times 2 will be -14 and -7 times 5d would be -35d which is exactly what they ask for
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What is the value of C in the matrix equation below?
lara [203]

Given:

The matrix equation is:

\begin{bmatrix}-18&3&5\end{bmatrix}-C=\begin{bmatrix}-22&1&12\end{bmatrix}

To find:

The value of matrix C.

Solution:

Let A=\begin{bmatrix}-18&3&5\end{bmatrix},B=\begin{bmatrix}-22&1&12\end{bmatrix}. Then the given equation can be rewritten as

A-C=B

-C=B-A

C=-(B-A)

C=A-B

On substituting the values of the matrices, we get

C=\begin{bmatrix}-18&3&5\end{bmatrix}-\begin{bmatrix}-22&1&12\end{bmatrix}

C=\begin{bmatrix}-18-(-22)&3-1&5-12\end{bmatrix}

C=\begin{bmatrix}-18+22&2&-7\end{bmatrix}

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Therefore, the correct option is C.

6 0
3 years ago
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There are 48 boys and 64 girls in the choir. What is the greatest amount of rows that can be created in which the same number of
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3 years ago
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Use the law of sines to find what Angle R is:
stich3 [128]

Answer:

Step-by-step explanation:

So, according to the law of Sines, we have

\frac{Sin(A)}{a} = \frac{Sin(b)}{b}

In our case, we have S and R, so...

\frac{Sin(S)}{s} = \frac{Sin(R)}{r}

And we want to isolate R...

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il63 [147K]

Step-by-step explanation:

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19x - 13x = 15 + 9

6x = 24

x = 24 / 6

x = 4

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14y = 180° - 7° + 37°

14y = 210°

y = 210°/ 14

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Hope it will help :)

3 0
3 years ago
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const2013 [10]

Answer:

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