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3 years ago

One x-intercept for a parabola is at the point

Mathematics

2 answers:

inna [77]3 years ago

4 0

Answer:

(-2,0)

Step-by-step explanation:

y=x^2+6x+8

(x+4)(x+2)

Aleonysh [2.5K]3 years ago

3 0

Answer:

Step-by-step explanation:

to find the x-intercepts put y=0

x²+6x+8=0

x²+4x+2x+8=0

x(x+4)+2(x+4)=0

(x+4)(x+2)=0

x=-4,-2

so x - intercepts are (-4,0) and (-2,0)

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What is the volume of the figure below if a = 9 units and b = 7 units?

kirill115 [55]

If the figure is a cylinder, the volume is about <span>452.39. I hope I helped!</span>

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4 years ago

(NEEDED ASAP) You’re laying a new kitchen floor with square tiles that are one yard by one yard. Your rectangular kitchen is 24

OLga [1]

Answer:

Step-by-step explanation:

4,752

8 0

3 years ago

Read 2 more answers

Two jets leave an air base at the same time and travel in opposite directions. One jet travels 80 mi/h faster than the other. If

Vesna [10]

Jet 1 moves with a speed of 672 mi/h, while jet 2 moves with a speed of 672 mi/h + 80mi = 752 mi/h.

Let's say that the rate (or speed) of the slower jet is R, then the rate of the faster jet is:

R + 80mi/h

Now, if we step on any of the two jets (such that we view it as if it doesn't move) the other jet will move with a speed equal to:

S = R + R + 80mi/h

We know that after 8 hours, the to jets are 11,392 mi apart, then we know that:

(R + R + 80mi/h)*8h = 11,392 mi

Now we can solve that for R:

2*R + 80mi/h = 11,392 mi/8h = 1,424 mi/h

R = 1,424 mi/h - 80mi/h)/2 = 672 mi/h

So Jet 1 moves with a speed of 672 mi/h, while jet 2 moves with a speed of 672 mi/h + 80mi = 752 mi/h.

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8 0

2 years ago

Describe a way to check the correctness of a subtraction answer.

Tamiku [17]

Step-by-step explanation:

Well in general, we can represent subtraction as: $x-y=z$

"z" represents the difference, and it really just represents x with y taken away. So if we were to "give back" this y value, we should get "x".

This means that: $z+y=x$

So one way to check, is adding the value that's being subtracted (y value) and the difference (z value), this should get you the value that is being subtracted from (x value). If you don't get the original value that's being subtracted from (x-value) then you know the answer you got is wrong.

3 0

1 year ago

777dan777 [17]

Answer:

252

Step-by-step explanation:

Types of main courses available = 9

Types of drinks offered = 7

Types of deserts = 4

Number of different meals consisting of a main course, a drink and a desert offered

Using the combination rule :

9C1 * 7C1 * 4C1

nCr = n! ÷ (n-r)!r!

So using calculator we obtain :

9 * 7 * 4 = 252

6 0

3 years ago