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Colt1911 [192]
3 years ago
14

Use the zero product property to find the solutions to the equation x2 – 15x – 100 = 0.

Mathematics
2 answers:
IrinaK [193]3 years ago
7 0

Answer:

x= 20      x =-5

Step-by-step explanation:

x^2 – 15x – 100 = 0.

What two numbers multiply to -100 and add to -15

-20 * 5 = -100

-20 +5 = -15

(x-20) (x+5) =0

Using the zero product property

x-20 =0     x+5 = 0

x= 20      x =-5

Ostrovityanka [42]3 years ago
7 0

x = 20 and x = -5

Step-by-step explanation:

x² – 15x – 100 = 0

First, find factors that multiply to get -100 and add to -15.

These factors are -20 and 5.

So we have (x - 20)(x + 5) = 0.

Now use the zero product property to get x - 20 = 0 or x + 5 = 0.

Solving from here, we get x = 20 or x = -5.

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To get the product you have to times 42.3 by -6, which gives you 253.8.

If you are trying to find out the quotient then divide 42.3 by -6 which equals -7.05.
5 0
3 years ago
Divide $500 in these ratios using the unitary method.<br> A. 2:3<br> B. 3:7 <br> C. 1:1
zysi [14]

Answer:

A) 200 is to 300 dollars

B)150 is to 350 dollars

C) 250 is to 250

Step-by-step explanation:

Part A) We want to divide $500 in the ratio 2:3 using the unitary method.

The total ratio is 2+3=5.

This means one unit is \frac{500}{5}=$100

Therefore $500 in the ratio 2:3 is 2*100=200 to 3*100=300

Part B) We want to divide $500 in the ratio 3:7 using the unitary method.

The total ratio is 3+7=10.

This means one unit is \frac{500}{10}=$50

Therefore $500 in the ratio 3:7 is 3*50=150 to 7*50=350

Part C) We want to divide $500 in the ratio 1:1 using the unitary method.

The total ratio is 1+1=2.

This means one unit is \frac{500}{2}=$250

Therefore $500 in the ratio 1:1 is 1*250=250 to 1*250=250

3 0
3 years ago
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What is the x value such that y= 15-3x and y=0?
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5

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