3 years ago

Pick the correct value for the image of A after applying the rotation matrix.

Mathematics

2 answers:

Serggg [28]3 years ago

8 0

The answer is d, because it worked for me

artcher [175]3 years ago

7 0

Answer:

A) (- 3, -4)

Step-by-step explanation:

edge 2021

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Solve 15x + 2 = 47 (what is the value of the variable “x?”) *

Dima020 [189]

Answer:

x = 3

Step-by-step explanation:

$15x + 2 = 47 \\ 15x = 47 - 2 \\ 15x = 45 \\ x = \frac{45}{15} \\ x = 3$

7 0

3 years ago

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What is the volume of a hemisphere with a radius of 26.7 m, rounded to the nearest tenth of a cubic meter?

attashe74 [19]

Answer:

$39,865.1m^3$

Step-by-step explanation:

a hemisphere is half a sphere.

And if the formula for the volume of a sphere is:

$V=\frac{4\pi r^3}{3}$

we must calculate the volume of the sphere and in the end divide by two to find the volume of the hemisphere.

Since the radius is:

$r=26.7m$

substituting this into the formula for volume:

$V=\frac{4\pi (26.7m)^3}{3} \\\\V=\frac{4(3.1416)(19,034.163m^3)}{3} \\\\V=79,730.12m^3$

this is the volume of the total sphere, thus the volume of a hemisphere is:

$\frac{V}{2}=\frac{79,730.12m^3}{2}\\ =39,865.06m^3$

rounding to the nearest tenth:

$39,865.1m^3$

8 0

4 years ago

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What's the answer? Can't figure it out

soldier1979 [14.2K]

9x⁹ - 90x⁸ - 351x⁷

What do each of these numbers have in common?

They ALL have 9x⁷ in them!

So, divide each one of these by 9x⁷

9x⁹ ÷ 9x⁷ = 9x²

-90x⁸ ÷ 9x⁷ = -9x

-351x⁷ ÷ 9x⁷ = -39

So, factorized completely, it is :

9x² - 9x - 39

~Hope I helped!~

4 0

3 years ago

Please help me answer this question. I will mark braineist to first answers no work nessacary.

andriy [413]

Plug in the given values and you'll see its option 2.

x=0 , f(x) = 0^2 + 1 = 1

x = 1 , f(x) = 1^2 + 1 = 2

x = 2, f(x) = 2^2 + 1 = 5

4 0

3 years ago

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Nina was curious about the height of the Eiffel Tower. She used a 1.2 meter model of the tower and measured its shadow at 2 P.M.