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AveGali [126]
3 years ago
9

Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 3

Mathematics
1 answer:
barxatty [35]3 years ago
7 0

when a=4 and b=3,

3.14((4 x 2)+ (4 x 3)) = 3.14(8+12) = 3.14 x 20 = 62.8

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4√2 divided by the square root of 2​
AnnyKZ [126]

Answer:

Divide the numerator and denominator by the square root of 2 to get:

\frac{4\sqrt{2} }{\sqrt{2} } = 4

Let me know if this helps!

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2 years ago
Charmaine's penny bank is 2/3 full. After she removes 160 pennies, it is 4/9 full. How many pennies can Charmaine's bank hold?
charle [14.2K]
2/3 = 6/9

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3 years ago
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rjkz [21]

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
suppose a parabola has an axis of symmetry at x=-2, a maximum height of 8, passes through the point (-6, 2). Wrire the equation
Virty [35]

Answer:

y = -3/8(x + 2)^2 + 8

Step-by-step explanation:

vertex form is

y = a(x - b)^2 + c     where a is a constant and (b,c) is the vertex.

The maximum is at (-2, 8)  because x 8 = height and x =-2 is equn. of symmetry

So here we have

y = a(x - (-2))^2 + 8

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Now at the point (-6, 2):

2 = a(-6+2)^2 + 8

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1 = -3/8.

So our equation is y = 3/8(x + 2)^2 + 8

3 0
3 years ago
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