Answer:
24
Step-by-step explanation:
4a+2b= 86 cm
a²+b²= 386 cm²
a+b=?
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- 4a+2b= 86
- 2a+b= 43
- (2a+b)²=43²
- 4a²+4ab+b²=1849
b²= 386- a², b= 43- 2a
- 4a²+4a(43-2a)+386-a²-1849=0
- 4a²+172a-8a²-a²-1463=0
- -5a²+172a-1463=0
- 5a²-172a+1463=0
solving quadratic equation we get
a=19 - integer solution
b= 43-2*19= 5
a+b=19+5=24
Answer:
A. 3^3
Step-by-step explanation:
28 - 3 + 2 = 27
3³ = 27
Since the exponent is negative and youhave to move the decimal backwards, the answer would be 0.00145
Answer:
Step-by-step explanation: <em>Multiply 4 x 4 </em>or add each side together.
4 x 4 = 16 x 1.5 = 24
<em>The area is 24</em>
