Answer:
The number needed is 15
Step-by-step explanation:
<u>Step 1: Solve for x</u>
70 - 35 = 20 + x
70 - 35 - 20 = 20 + x - 20
15 = x
Answer: The number needed is 15
Answer:
Step-by-step explanation:
Cosine (cos) is adjacent by hypotenuse. 
In any of the 45° angles, 1 is adjacent and √2 is the hypotenuse.
So arrange them to get
Answer:
14
Step-by-step explanation:
The perimeter is the sum of the sides, so we have
2x+x+15+4x-7=57
= 7x+8
Subtracting 8 from both sides, we get
7x= 49
Dividing 7 from both sides, we get
x=7
Our sides are then 2x=14, x+15=22, and 4x-7=21. 14 is our answer
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Answer:
rectangle square,
Step-by-step explanation:
square and rectangle done.
