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Vlada [557]
3 years ago
9

How do I do -9+-2x+9x-1

Mathematics
2 answers:
Yanka [14]3 years ago
8 0

-9+(-2x)+9x-1\qquad\text{combine like terms}\\\\=(-2x+9x)+(-9-1)=\boxed{7x-10}

SVETLANKA909090 [29]3 years ago
3 0
You combine like terms.
-2x+9x
whatever answer that is you then combine the like terms -9+-1 the you just make an expression out of them.
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If the scale factor is 5, how many times larger will the scaled copy's area be?
Lady bird [3.3K]

Answer:

25 times

Step-by-step explanation:

Scale factor is the ratio of dimensions of the image and the preimage.

Scale factor = \frac{\text{Side length of image}}{\text{Side length of preimage}}

Since area of a figure is the square of dimensions.

Area = Length × Width

Therefore, area scale factor will be the ratio of square of the dimensions of image and preimage.

Area scale factor = \frac{\text{Area of the image}}{\text{Area of the preimage}}

                             = (Scale factor)²

                             = 5²

                             = 25

Therefore, area of the image will be 25 times the area of the preimage.

4 0
4 years ago
Solve each equation. Graph and check your solutions 4= |y|
saw5 [17]
Haha i couldn’t type it on here but here you go :).

6 0
4 years ago
What is the awnser to the equation r-4+6r=3+8r I'm trying to find what “r” is and if you can please solve the problem step by st
sattari [20]
Remember that you can do anything to an equation as long as you do it to both sides except divide by zero
so you can add like terms like this
you can add similar things like 1+3 and m+2m and m^2+2m^2 but not unlke things like 1+m or m+m^2

so m+2m=1m+2m=3m so

r-4+6r=3+8r
use commutative property to move numbers around (a+b=b+a)
group like terms
r+6r-4=3+8r
add like terms
1r+6r-4=3+8r
7r-4=3+8r
subtract 7r from both sides
7r-7r-4=3+8r-7r
0r-4=3+1r
-4=3+r
subtract 3 from both sides
-3-4=3-3+r
-7=0+r
-7=r

r=-7
7 0
3 years ago
Which side in the figure on the right corresponds to the segment WU and what it the scale factor?​
goblinko [34]

Answer:

WU corresponds with CD and the scale factor is 3

5 0
3 years ago
Find the circumference of the circle and round to the nearest tenth
VLD [36.1K]

Answer:

The circumference is 45.2yd

Step-by-step explanation:

Given

d = 14.4 --- diameter

Required

Determine the circumference

The circumference is calculated as:

C =\pi d

So, we have:

C =\pi * 14.4

Take pi a 3.14

C =3.14 * 14.4

C =45.216

Approximate

C =45.2yd

4 0
3 years ago
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