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2 years ago

11

The solutions of a quadratic equation are -4,9 Write a related quadratic function in factored form.

1 answer:

Yuri [45]2 years ago

3 0

Answer:

y = (x + 4)(x - 9)

Step-by-step explanation:

x = {-4, 9}

y = (x + 4)(x - 9)

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A rectangle has a length that is 5 inches greater than its width, and its area is 104 square inches. The equation (x + 5)x = 104

mina [271]

1. Regroup terms
x(x+5)=104

2. Expand
x^2+5x=104

3. Move all terms to one side
x^2+5x-104=0

4. Factor x^2+5x-104
(x-8)(x+13)=0

5. Solve for x
x=8 or x=-13
Since x<0 is not possible in this case, x=8

6. Finding the dimensions
We know that one side has to be x+5, and now that we know x:
8+5=13
13*8=104

The dimensions are 13 and 8, have a nice day :D

8 0

3 years ago

Read 2 more answers

2 people share 4/3 feet of rope. What length of rope should each friend get?

melisa1 [442]

2 x $\frac{4}{3}$ = $\frac{6}{3} * \frac{2}{3} = \frac{12}{9} = \frac{4}{3}$

5 0

3 years ago

In a shipment of 71 vials, only 13 do not have hairline cracks. If you randomly select 2 vials from the shipment, what is the pr

yanalaym [24]

Answer:

0.0313

Step-by-step explanation:

Given that in the shipment of 71 vials, only 13 do not have hairline cracks

Probability of not having a hairline cracks = $\frac{13}{71}$

If you randomly select 2 vials from the shipment

(Probability of not having a hairline cracks)' = $\frac{13-1}{71-1}$ = $\frac{12}{70}$

what is the probability that none of the 2 vials have hairline cracks.

i.e $(\frac{13}{71}) * (\frac{12}{70})$

= 0.183 × 0.171

= 0.0313

Hence, the probability that none of the 2 vials have hairline cracks = 0.0313

6 0

3 years ago

A train traveled 1/5 of the distance between two cities in 3/4 of an hour. At this rate, what fraction of the distance between t

lana66690 [7]

Answer:

1/5x=3/4 hour

so since 5 times 1/5=1 then

find x

multiply both sides by 5

x=15/4 hour=3 and 3/4 hour=3 hour and 45 mins

Step-by-step explanation:

Hope this helps :)

Brainlest?

6 0

2 years ago

√20/125 answer in simpleset form<br>

grigory [225]

Answer:

.4!

Step-by-step explanation:

first you divide 20 by 125 and get .16

then you take the square root of .16 and get .4

4 0

2 years ago