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uranmaximum [27]
3 years ago
7

One of the solutions to x^2 - 2x - 15 = 0 is x = -3. What is the other solution

Mathematics
2 answers:
Alex787 [66]3 years ago
8 0

Answer:

x=5

Step-by-step explanation:

You have to factor the equation and the way you do this is to find two numbers that multiply to get -15 and add to get -2 and those numbers are 3 and -5 so the factors are (x+3) and (x-5)

You set them equal to 0 and solve for x

x+3=0           x=-3

x-5=0            x=5

austin2 years ago
0 0

2(x−3) = 2x + 15
how many soultions

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A farmer takes 1 week to fill 3 bins of squash. At this rate, how long will it take to fill 240 bins?
Oksanka [162]

Answer:

It will take 80 weeks to fill 240 bins full of squash.

Step-by-step explanation:

First we have to divide 3 by 240

3÷240=80

And Voila! That's our answer.

It will take 80 weeks to fill 240 bins full of squash.

Thanks! Mark me brainliest if this could help!

6 0
2 years ago
The total age of two sisters is 108 years
tester [92]

Answer:

7 : 5

Step-by-step explanation:

let the age of the younger be x , then the older is x + 18, thus

x + x + 18 = 108, that is

2x + 18 = 108 ( subtract 18 from both sides )

2x = 90 ( divide both sides by 2 )

x = 45

Thus younger is 45 and older is 45 + 18 = 63

ratio older : younger = 63 : 45 = 7 : 5

6 0
3 years ago
Pls help answer this question!
Amanda [17]

Answer:

C

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Two dice are rolled. Use the complement rule to find that the probability that the sum of the dice is less than 10.
Katarina [22]

Answer:

\dfrac{5}{6}

Step-by-step explanation:

When two dice are rolled, the sample space is

\begin{array}{cccccc}(1,1)&(1,2)&(1,3)&(1,4)&(1,5)&(1,6)\\(2,1)&(2,2)&(2,3)&(2,4)&(2,5)&(2,6)\\(3,1)&(3,2)&(3,3)&(3,4)&(3,5)&(3,6)\\(4,1)&(4,2)&(4,3)&(4,4)&(4,5)&(4,6)\\(5,1)&(5,2)&(5,3)&(5,4)&(5,5)&(5,6)\\(6,1)&(6,2)&(6,3)&(6,4)&(6,5)&(6,6)\end{array}

In total, 36 outcomes

First, find the probability that the sum is 10 or greater:

All favorable outcomes

10: (4,6),\ (5,5),\ (6,4)

11: (5,6),\ (6,5)

12: (6,6)

In total, 6 outcomes.

The probability that the sum is 10 or greater is

P(A)=\dfrac{6}{36}=\dfrac{1}{6}

Use the complement rule to find that the probability that the sum of the dice is less than 10:

P(A^C)=1-P(A)=1-\dfrac{1}{6}=\dfrac{5}{6}

6 0
3 years ago
Twelve pounds of beans are distributed equally into 8 bags to give out at the food bank. How many pounds of beans are in each ba
horrorfan [7]
12.0/8=15. If you at .0 to a # the amount is the same just in a different way.
8 0
3 years ago
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