Answer:
Step-by-step explanation:
item 4 Find the perimeter of the window. Round your answer to the nearest tenth. 90 cm
You did not state the diameter or radius of the window
so, i will use 90cm as the diameter of the window
First, I'd calculate the half circumference of the window.
The formula for circumference is 
,
Half of it would just be 
Since our diameter is 90 cm, our radius is 45 cm.
Circumference =
circumference is also the same with perimeter
<h3>so, the answer is 141.37cm</h3><h3>to nearest tenth = 141.4cm</h3>
Answer :
Factor 
by grouping
We group first two terms and last two terms
Now we take out GCF from each group
GCF of 
is x^2
GCF of 
is 1
Now we factor out x+1 that is in common
Answer:21
Step-by-step explanation:becausebecausebecau se i know
Answer:
x = 11/2
Step-by-step explanation:
Combine like terms to get -4x + 15 = -7
Subtract 15 from both sides to get -4x = -22
Divide both sides by 4 to get x = 11/2
Answer:
<h2>y=8</h2>
Step-by-step explanation:
4y-4=28
4y=28+4
4y=32
y=32/4
y=8
now plug in 8 for y and check the equation true:
4y-4=28
4*(8)-4=28
32-4=28
28=28
So, y is equal to eight 8
