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2 years ago

What is the correct answer? I never learned this in school

Mathematics

2 answers:

Cloud [144]2 years ago

8 0

Answer:

option D

Step-by-step explanation:

M and N cannot be added because they have different order.

Note : For adding and subtracting two matrices their order must be same.

nekit [7.7K]2 years ago

5 0

The correct answer is D

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Help me please with this please!!

Ilia_Sergeevich [38]

8) D
9) D
11) Twenty-five thousandths
13) A
14) Sixty-eight and 4 tenths

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3 years ago

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A pack of five basic solid T-shirts costs $29.95 in a store. The sales tax where they are sold is 7.75%. What is the unit cost o

Anna71 [15]

Answer:

6.45

Step-by-step explanation:

29.95+7.75%=32.27

32.27/5

6.45

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2 years ago

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Sean b= 5,79; c= 10,4,el angulo A= 54,46°, el angulo C mide ?

Rzqust [24]

Answer:

$C \approx 91.732^{\circ}$

Step-by-step explanation:

(This exercise is presented in Spanish and for that reason explanation will be held in such language)

El lado restante se determina por la Ley del Coseno:

$a = \sqrt{b^{2}+c^{2}-2\cdot b\cdot c \cdot \cos A}$

$a = \sqrt{5.79^{2}+10.4^{2}-2\cdot (5.79)\cdot (10.4)\cdot \cos 54.46^{\circ}}$

$a \approx 8.466$

Finalmente, el angulo C se halla por medio de la misma ley:

$\cos C = - \frac{c^{2}-a^{2}-b^{2}}{2\cdot a \cdot b}$

$\cos C = -\frac{10.4^{2}-8.466^{2}-5.79^{2}}{2\cdot (8.466)\cdot (5.79)}$

$\cos C = -0.030$

$C \approx 91.732^{\circ}$

3 0

2 years ago

Evaluate 27x1/3^3<br> I need it in simple form

ruslelena [56]

Step-by-step explanation:

$27 \times \frac{1}{ {3}^{3} }$

$= 27 \times \frac{1}{27}$

$= 1$

7 0

2 years ago

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Explain how 7.69 * 15.3 = 117.657

Anni [7]

Answer:

117.657

Step-by-step explanation:

Line up your decimals take out your decimals and put them in after you solve

769

*153

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So if you know long multiplecation then you will find your answer

Good luck hope this helps :)

~Animaljamissofab ♥

5 0

3 years ago