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kolezko [41]
2 years ago
6

What are the combining like terms ?

Mathematics
2 answers:
dimaraw [331]2 years ago
7 0

Answer:

2r+1

Step-by-step explanation:

-5r-8+9+7r= (-5r+7r)+(-8+9)

Solve:

2r+1

Hope this helps!

GuDViN [60]2 years ago
7 0

Answer:

2r+1

Step-by-step explanation:

-5r-8+9+7r

<u>Combine like terms:</u>

  • <u />-5r+7r-8+9
  • -8+9=1
  • -5r+7r=2r
  • 2r+1

________________________

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the width of the morros in shannon's bathroom is 4/9 its length. The area of the mirror is 576 square inches. What are the dimen
fredd [130]
W=4L/9

A=LW, using W found above gives us

A=L(4L/9)

A=4L^2/9  and we were told that A=576 so

4L^2/9=576  multiply both sides by 9

4L^2=5184  divide both sides by 4

L^2=1296 take the square root of both sides

L=36, and we know that W=4L/9 so

W=4(36/9)=16

So the dimensions are: width=16in and length=36in
5 0
3 years ago
Can anyone show me the steps in order solve this problem
STatiana [176]
M∠A = 42°   [isosceles triangle]

m∠B = 180 - 42 - 42 = 96°  [in a triangle, the three interior angles always add to 180°]

m∠C = 180 - 96 - (x+12)
m∠C = 84 - x - 12
m∠C = 72 - x

2x+9 + 3x-1 + 72-x = 180
4x + 80 = 180
4x = 180 - 80
4x = 100
x = 100/4
x = 25

m∠C = 72 - x = 72 - 25 = 47°

<span>I hope this helped</span>

8 0
3 years ago
What is the value of x?
vredina [299]
Add all the angle and =to 180 because all the angle in a triangle add up to 180 then put all numbers on one side and all x terms on the other side then you find x
8 0
3 years ago
Pleaseeee help
Alex Ar [27]

Answer:

A and B

Step-by-step explanation:

x²+6x+9=2

(x+3)^(2) =2

x= ±√2  -3

Therefore answer is A and B

5 0
3 years ago
Suppose that the demand equation for a certain item is 1p+1x2−160=0. evaluate the elasticity at 65:
bekas [8.4K]
Price elasticity is defined as \frac{\Delta(quantity)}{\Delta(price)}.

Here, the question has omitted to define variables, so we will ASSUME
p=price
x=variable,
and we're given
p+x^2-160=0

We calculate
\delta{x}/\delta{p} by implicit differentiation with respect to p:
1+2x (dx/dp)=0
=>
E(x)=(dx/dp)=-1/(2x)

Therefore the price elasticity at x=65 is
E(65)=1/(2*65) =-1/130 (approximately -0.00769)

4 0
2 years ago
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