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Alecsey [184]
2 years ago
9

How many elements are in an m x n matrix?

Mathematics
1 answer:
olga nikolaevna [1]2 years ago
5 0

Answer: m X n matrix contains mn elements

Step-by-step explanation:

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Convert 2.365 to a percent
I am Lyosha [343]
236.5% is the correct answer
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What is the completely factored from of 9x2+24x+16
dezoksy [38]

Answer:

(3x+4)(3x+4) is factor of given expression.

B is correct.

Step-by-step explanation:

We are given an expression 9x^2+24x+16

Formula: a^2+2ab+b^2=(a+b)^2

First we write each term as perfect square as formula.

\Rightarrow 9x^2+24x+16

\Rightarrow (3x)^2+2\cdot 3x\cdot 4+4^2

Using formula , a=3x and b=4

\therefore (3x)^2+2\cdot 3x\cdot 4+4^2=(3x+4)^2

Now we write same number two times.

Hence, (3x+4)(3x+4) is factor of given expression.

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2 years ago
4 Ayla s is paid $15 20 per hour for a 34 hour week. April has the same weekly pay but works 38
VashaNatasha [74]

Find Atlas weekly pay by multiplying rate by hours:

15.20 x 34 = 516.80 a week.

Now to find Apri’s rate divide the weekly pay by hours:

516.80 / 38 =$13.60 per hour

5 0
3 years ago
I just need no. a please help me to prove this. ​
OleMash [197]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Given: A + B + C = π    and         cos A = cos B · cos C

scratchwork:

  A + B + C = π

               A = π - (B + C)

         cos A = cos [π - (B + C)]                              Apply cos

                    = - cos (B + C)                                    Simplify

                    = -(cos B · cos C - sin B · sin C)          Sum Identity

                    = sin B · sin C - cos B · cos C               Simplify

cos B · cos C = sin B · sin C - cos B · cos C               Substitution

2cos B · cos C = sin B · sin C                                        Addition

                     2=\dfrac{\sin B\cdot \sin C}{\cos B \cdot \cos C}                                     Division

                     2 = tan B · tan C

\text{Use the Sum Identity:}\quad \tan(B+C)=\dfrac{\tan B+\tan C}{1-\tan B\cdot \tan C}

<u>Proof LHS → RHS</u>

Given:                              A + B + C = π

Subtraction:                     A = π - (B + C)

Apply tan:                  tan A = tan(π - (B + C))

Simplify:                               = - tan (B + C)

\text{Sum Identity:}\qquad \qquad \qquad =-\bigg(\dfrac{\tan B+\tan C}{1-\tan B\cdot \tan C}\bigg)

Substitution:                        = -(tan B + tan C)/(1 - 2)

Simplify:                               = -(tan B + tan C)/-1

                                            = tan B + tan C

LHS = RHS:   tan B + tan C = tan B + tan C  \checkmark

5 0
2 years ago
Joachim wants to win the giant monkey at the carnival game. To do so, he'll need to roll two ones with a single toss of a pair o
Gemiola [76]

\frac{1}{6}  \times  \frac{1}{6}  =  \frac{1}{36}
Answer: 1/36

Hope this helps. - M
4 0
2 years ago
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