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Y_Kistochka [10]

3 years ago

11

If angle A and angle B are supplementary angles and angle A is eight times as large as angle B, find the measures of angle A an

d angle B.

1 answer:

ruslelena [56]3 years ago

6 0

Step-by-step explanation:

A=8B

A+B=180

8B+B=180°

9B=180°

B=20°

so

angle A =8×20=160°

angle B= 20°

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Dominik [7]

The multiplication of −2(−5)(−3) is -30

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From the given question, we are to multiply:

= - 2 × (-5) × (-3)

= +10 × (-3)

= -30

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brainly.com/question/1755985

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What advice would you give to a person who handles hydrogen and oxygen in their workplace?

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The stopping distance for 10 cars traveling at 55 miles per hour is shown in the table above . What is the mean (average ) stopp

umka21 [38]

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Add all of the numbers and divide by the number of columns. Ex.

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2 years ago

What are the values of m and n in the matrix addition below?

Aleksandr [31]

ANSWER

The correct answer is $m=45,n=12$ .

<u>EXPLANATION</u>

We were given the matrix equation;

$\left[\begin{array}{cc}n-1&6\\-19&m+3\end{array}\right] +\left[\begin{array}{cc}-1&0\\16&-8\end{array}\right] =\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

We must first simplify the Left Hand Side of the equation by adding corresponding entries.

$\left[\begin{array}{cc}n-1+-1&6+0\\-19+16&m+3-8\end{array}\right]=\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

That is;

$\left[\begin{array}{cc}n-2&6\\-3&m-5\end{array}\right]=\left[\begin{array}{cc}10&6\\-3&40\end{array}\right]$ .

Since the two matrices are equal, their corresponding entries are also equal. we equate corresponding entries and solve for m and n.

This implies that;

$n-2=10$

We got this equation from row one-column one entry of both matrices.

$n=12$

Also, the row three-column three entries of both matrices will give us the equation;

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$m=45$

Hence the correct answer is $m=45,n=12$ .

The correct option is option 2

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3 years ago

What is the value of x? Enter your answer in the box. <br><br> x= ___cm

gogolik [260]

Answer:

x=5

Step-by-step explanation:

40/x=32/4

160=32x

160/32=32x/32

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Hope this helps sweetie! ;)

3 0

3 years ago