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2 years ago

Isabelle rides her bike to school. The graph shows her speed at different times during her ride.

Mathematics

1 answer:

kipiarov [429]2 years ago

3 0

Answer:

0 to 2 minutes - Accelerating

3 to 4 minutes - Constant

6 to 8 minutes - Decelerating

9 to 11 minutes Accelerating

hope i have helped u

Step-by-step explanation:

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Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply.

rodikova [14]

Answer:

-5

negative nine-halves

Step-by-step explanation:

we know that

In the quadratic equation $ax^{2} +bx+c=0$

If $b^{2}-4ac < 0$

then

The system has no real numbers solutions

we have

$-x^{2} +3x+c=0$

$a=-1,b=3$

substitute

$3^{2}-4(-1)c < 0$

$9+4c < 0$

$c < -\frac{9}{4}$

Verify each case

case 1) -5

For c=-5

substitute

$-5 < -\frac{9}{4}$

$-20 < 9$ ------> is true

therefore

The value of c=-5 will cause the quadratic equation to have no real number solutions

case 2) negative nine-halves

For c=-9/2

substitute

$-9/2 < -\frac{9}{4}$

$-36 < -18$ ------> is true

therefore

The value of c=-9/2 will cause the quadratic equation to have no real number solutions

case 3) negative one-quarter

For c=-1/4

substitute

$-1/4 < -\frac{9}{4}$

$-4 < -36$ ------> is not true

therefore

The value of c=-1/4 will not cause the quadratic equation to have no real number solutions

case 4) 1

For c=1

substitute

$1 < -\frac{9}{4}$ ------> is not true

therefore

The value of c=1 will not cause the quadratic equation to have no real number solutions

case 5) 9 Over 4

For c=9/4

substitute

$9/4< -\frac{9}{4}$ ------> is not true

therefore

The value of c=9/4 will not cause the quadratic equation to have no real number solutions

5 0

3 years ago

Read 2 more answers

Please help!!!!!! If ten = x what is 7x + 93x divided by 3.2x

lisabon 2012 [21]

Answer:

The answer is 2876.25

Step-by-step explanation:

The question said x is ten

so 7x means 7*10

93x means 93×10

divided by 3.2x which means 3.2x which is 3.2×10

when u write it in an equation format it will look like this 70+930÷32

Ur answer should look like this 2976.25

6 0

3 years ago

Read 2 more answers

A sheet of paper has a perimeter of 39 inches. If the width of the paper is 8.5 inches, what is the length of the sheet of paper

tatiyna

Hello :
the perimeter is P: P=2(W+L) W : the width L: the length
2(8.5 +L) = 39
17+2L = 39
2L =22
L= 11

7 0

3 years ago

find the volume of a cylinder whose base has a diemeter of 11 and whose height is 12.5. use 3.14 and round your answer to the ne

atroni [7]

Volume = π (3.14)×22^2×12.5 = 18,997 inches³

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3 years ago

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Ber [7]

Answer:Dang i dont know.

Step-by-step explanation:

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