3 years ago

In the triangle below, x= degree. Round to the nearest tenth

Mathematics

1 answer:

VMariaS [17]3 years ago

4 0

Answer:

Bruuuhhhhhhhhhhhhhhhhhhh

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Is 3/12 rational or irrational?

klio [65]

3/12 is rational because it ends in 0.25

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4 years ago

What is the value of xx) = 9^x when x= -2? A. 1/81 B. 81 C. 1/81 D. 18

Paraphin [41]

Answer:

C. $9^{-2} = \frac{1}{81}$

Step-by-step explanation:

Given

$9^{x}$

Required

Find the expression where x - 2

$9^{x}$

Substitute 2 for x

$9^{-2}$

From law of indices which states

$a^{-b} = \frac{1}{a^b}$

So, the expression becomes

$9^{-2} = \frac{1}{9^2}$

Expand the denominator

$9^{-2} = \frac{1}{9 * 9}$

$9^{-2} = \frac{1}{81}$

Hence, $9^{x}$ is $\frac{1}{81}$ when x = 2

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3 years ago

A box is contructed out of two different types of metal. the metal for the top and bottom, which are both square, costs $5 per s

patriot [66]

Total cost, C = 8x^2 + 12xz
volume, V = (x^2)*z = 10
C = 8x^2 + 12x*10/x^2
= 8x^2 + 120/x
dC/dx = 16x - 120/x^2 = 0
16x = 120/x^2
x^3 = 120/16
x = 1.957 ft

d^2C/dx^2 = 16 +240/x^3 = +ve for x = 1.957
so, C is minimum when
x = 1.957 ft z = 2.61 ft

Length of the base x is 1.957 ft and height of side z is 2.61 ft

3 0

4 years ago

Greg withdrew $37 from his account on Wednesday and then deposited $15 in his account on Thursday. On Friday, he withdrew $120.

barxatty [35]

he had $297 in his account before wednesday

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4 years ago

What is the slope the line that passes through the points: (-6, 14), (2, -18)

Vesna [10]

Hey there! I'm happy to help!

Here's how to find the slope given any two points.

Subtract the y values.

14-(-18+-14+18=32

Subtract the x values.

-6-2=-8

And divide those.

32/-8=-4

The slope is -4.

Have a wonderful day! :D

5 0

3 years ago