All categories

2 years ago

HELP PLEASE! Select the correct answer.

Mathematics

1 answer:

Stells [14]2 years ago

6 0

Answer:

A or D going foe a since I'm pretty sure when you take out (× - 7) it turn to a positive

Step-by-step explanation:

anything after x determines if it goes up or down since it's a positive 3 it 3 units up

You might be interested in

Elenna [48]

Parallel lines are in the same plane, never intersect, and have the same slope.

7 0

3 years ago

5x+2y=22. -2x+6y=3 What is the X coordinate of the solution. Round to the nearest tenth

just olya [345]

Multiply first example by 3 and subtract by second example, you will get the following:

3*(5x + 2y) = 3*22 => 3*5x + 3*2y = 66 => 15x + 6y = 66
now subtraction:
(15x + 6y) - (-2x + 6y) = 66 - 3
15x + 6y + 2x - 6y = 63
15x + 2x + 6y - 6y = 63
17x = 63
x = 63/17 ≈ 3.705..... and as it says to round to the nearest tenth our answer would be: x = 3.7

8 0

3 years ago

The sum of 7 angles of a decagon is 1170°. The 3 sides are equal to each other. Calculate the size of the other 3 angles.

7nadin3 [17]

Answer:

180.....1888888888888888

5 0

3 years ago

Read 2 more answers

I need this question answered fast ;c

Margarita [4]

It’s prob 20 or 30 Bc 18 is rounded to 20 and 29 is rounded to 30

5 0

3 years ago

Read 2 more answers

Find the volume of the solid of revolution formed by rotating about the x--axis the region bounded by the given curves.

kherson [118]

Answer:

$=\frac{364\pi}{3}$ cubic units

Step-by-step explanation:

We are to find the volume of the solid of revolution formed by rotating about the x--axis the region bounded by the given curves.

f(x)=2x+1, y=0, x=0, x=4.

The picture is given as shaded region.

This is rotated about x axis

Limits for x are already given as 0 and 4

f(x) is a straight line

The solid formed would be a cone

Volume = $\pi \int\limits^a_b {(2x+1)^2} \, dx \\= \pi \int\limits^4_0 {(4x^2+4x+1)} \, dx \\=\pi [\frac{4x^3}{3} +2x^2+x]^5_0\\\\=\pi[\frac{4*4^3}{3}+2*4^2+4-0]\\=\frac{364\pi}{3}$

7 0

3 years ago