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3 years ago

WORTH 20 POINTS! WILL MARK BRAINLIEST when x = 2, 9x + 4 =

Mathematics

2 answers:

viva [34]3 years ago

6 0

9(2) + 4 = 18 + 4

18 + 4 = 22

Angelina_Jolie [31]3 years ago

4 0

Wouldn't this literally just be 96 or am I stupid.

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Write an addition equation or a subtraction equation (your choice!) to describe the diagram

Fed [463]

Answer: -3 + 4 = 1

==================================================

Explanation:

We start at the bottom layer.

That arrow on the bottom layer goes from 0 to -3. In short, it represents the number -3.

The upper arrow moves from -3 to +1 or simply 1. This is a distance of 4 spaces. So we add on 4.

Overall, this diagram represents -3+4 = 1

8 0

2 years ago

A satellite is in an approximately circular orbit 3600 kilometers from Earth surface. The radius of Earth is about 6400 km. What

timofeeve [1]

Answer:

62,832 kilometers

Step-by-step explanation:

The first thing you want to notice is that it's giving you two pieces of one part, if that makes sense. The radius of the earth, and then the distance from the surface of the earth to the orbit. What you want to do is find the circumference of the orbit in relation to the center of the earth. So, as a result, you're going to add those two values together. 6400 + 3600 equals 10,000. Now this is only the radius, but in order to find the circumference, we need the diameter. To find the diameter, you multiply the number by two. 10,000 x 2 is 20,000. Now you multiply this number by pi to find your final answer. This answer is 62,832 kilometers.

5 0

2 years ago

Answer needed urgently

jenyasd209 [6]

Answer:

dont now the answer but air math app will help you just take photo of problems

3 0

1 year ago

Read 2 more answers

Need help question #3. Show steps please

Oksana_A [137]

Answer:

Step-by-step explanation:

We are given:

$\displaystyle \int \sqrt{x}\Big(9x^3-2\sqrt{x}+\frac{8}{x}\Big)\, dx$

And we want to select its equivalent form.

Note that A is not valid. No integration property allows us to separate factors unless that factor is a constant.

We can simply rewrite and then distribute. First, by rewriting:

$\displaystyle =\int x^{1/2}\Big(9x^3-2x^{1/2}+8x^{-1}\Big)\, dx$

Distribute. Recall exponent properties;

$\displaystyle =\int(9x^{3+1/2}-2x^{1/2+1/2}+8x^{-1+1/2})\, dx$

Simplify:

$\displaystyle=\int9x^{7/2}-2x+8x^{1/2}\, dx$

This can then be separated (since its addition/subtraction) and integrated individually.

Hence, our answer is B.

8 0

2 years ago

If EF bisects angle CEB, angle CEF=7x + 21 and angle FEB = 10x - 3, find the measure of DEB.

morpeh [17]

Answer: DEb = 26°

Step-by-step explanation:

Given information

CEF = 7x + 21

FEB = 10x - 3

Given expression deducted from the definition of the bisector

FEB = CEF

Substitute values into the expression

10x - 3 = 7x + 21

Subtract 7x on both sides

10x - 3 - 7x = 7x + 21 - 7x

3x - 3 = 21

Add 3 on both sides

3x - 3 + 3 = 21 + 3

3x = 24

Divide 3 on both sides

3x / 3 = 24 / 3

x = 8

Find the sum of the angle of CEF and FEB

7x + 21 + 10x - 3

=7 (8) + 21 + 10 (8) - 3

=56 + 21 + 80 - 3

=77 + 80 - 3

=157 - 3

=154

Subtract 154 from the straight angle

DEB = 180 - 154

$\boxed{DEB = 26}$

Hope this helps!! :)

Please let me know if you have any questions

8 0

2 years ago