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3 years ago

Solve each equation for the variable. n + 3 = 8 4 + w = -8

1 answer:

4 0

1.) answer: 5
Steps subtract 3 from both sides 8-3 is 5 so x is 5

2.) answer: -12
Because the 4 is positive you subtract it on the other side to cancel it out and -4 +-8 is -12 so x is -12

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What is the measure of an angle that is 8 degrees less than 3 times its supplement?

Ymorist [56]

Supplementary angles have a sum of 180 degrees.

If one angle is x, its supplementary angle is 180-x.

We are told that x is 8 less than triple its supplements so:

x=3(180-x)-8

x=540-3x-8

4x=532

x=133

6 0

3 years ago

Write an inequality to describe the region. The solid upper hemisphere of the sphere of radius 5 centered at the origin

dusya [7]

Answer:

$x^2 + y^2 + z^2 \le 25$ for $z \ge 0$

Step-by-step explanation:

Given

$r = 5$ --- radius

Required

Determine the inequality of the region

The inequality of a region of a sphere is determined using:

$x^2 + y^2 + z^2 \le r^2$

Substitute 5 for r

$x^2 + y^2 + z^2 \le 5^2$

$x^2 + y^2 + z^2 \le 25$

Solving further: <em>The question says only the upper hemisphere is considered.</em>

This implies that:

$z \ge 0$

<em>So, the equation is:</em>

$x^2 + y^2 + z^2 \le 25$

$z \ge 0$

5 0

3 years ago

I don’t know how to do this

DochEvi [55]

Answer:

y = 1/4 (3 s - 8)

Step-by-step explanation:

hopes this helps:)

4 0

3 years ago

A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?

IgorC [24]

Direct variation mean x =ky so y = x/k

(2,14) mean y = kx so 14 = k*2 so 14 = 7*2 so 14 = 14
(4,28) mean y = kx so 28 = k*4 so 28 = 7*4 so 28 = 28

from these result that the 3rd choice is right sure

6 0

3 years ago

Read 2 more answers

When the door was left open, 36 pigeons flew the coop. If this was 40 percent of all the pigeons, how many pigeons were there or

ivolga24 [154]

Answer: 90

Step-by-step explanation:

40 % = 0.40. X = number of pigeons. 0.4x =36

X = 36/0.4 = 90

4 0

3 years ago