2 years ago

Select the correct answer.

1 answer:

lisabon 2012 [21]2 years ago

3 0

Answer: Every quadratic has a (single) y-intercept. The reason for this is that the y-intercept is the function value at x = 0, and we can always substitute x = 0 into the quadratic. Thus, the y-intercept of the quadratic function y = ax2 + bx + c is c.

Step-by-step explanation:

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Rewrite the equation by completing the square. x^{2}+16x+64 = 0

Ostrovityanka [42]

Answer:

(x+8)²

Step-by-step explanation:

x² + 16x + 64 = (x+8)²

(x+8)² = (x+8)(x+8) = x*x + x*8 + 8*x + 8*8 = x² + 8x + 8x + 64

= x² + 16x + 64

8 0

2 years ago

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liraira [26]

Answer:=

−243 /512 Fraction

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2 years ago

The distance from Wakefield to London is 180 miles. A train travels this distance in 2 hours 15 minutes. Calculate the average s

Readme [11.4K]

Answer:

v = 80 mph

Step-by-step explanation:

Given that,

The distance from Wakefield to London is 180 miles.

The train travels this distance in 2 hours 15 minutes.

We need to find the average speed of the train. The average speed of the train is equal to the total distance covered divided by the time taken.

$v=\dfrac{d}{t}\\\\v=\dfrac{180\ miles}{(2+\dfrac{15}{60})\ h}\\\\v=80\ mph$

So, the required average speed of the train is 80 mph.

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2 years ago

Whatsthe defenition of hypotenuse

marta [7]

Hypotenuse is the longest side of a right triangle. It is equal to the sum of the squares on the other two sides.

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3 years ago

Can you help me with number 2 please show me how you did it thank you

denpristay [2]

Distraibutiv peorpoty
a(b+c)=ab+ac

we have
3a+7+2(3+a)
distribute first
2(3+a)=6+2a

now we have
3a+7+6+2a
move like terms together
3a+2a+7+6
add lke terms
5a+13

7 0

2 years ago