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4 years ago

Factor completely. -5 x2y + 10 xy - 15 xy2 I need help.

Mathematics

1 answer:

ASHA 777 [7]4 years ago

4 0

Answer:

$5\,x\,y\,(-x+2-3y)$

Step-by-step explanation:

Always proceed by first extracting all common factors to all terms:

Notice that the factors: 5, x, and y are present in all terms, so we can extract them from the trinomial:

$-5x^2y+10xy-15xy^2\\5\,x\,y\,(-x+2-3y)$

Now, the trinomial left (-x+2-3y) cannot be factored out, so then factoring is complete.

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The solutions set to 6+2n>12 is n>3. Which are correct representations of this solution?

Travka [436]

6+2n>12

n>3 is true because 6 minus 12 equal 6 divide by 2 is 3

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4 years ago

Read 2 more answers

20 Points- Need help, please explain how you got your answer!

Korolek [52]

3v+2 = 7v-6
3v-7v = -6-2
-4v = -8
v = 2

then the length of QS = 3(2)+2 = 6+2 = 8
and the length of TV = 7(2)-6 = 14-6 = 8

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3 years ago

EXPLAIN HOW YOU WOULD USE REPEATED SUBTRACTION TO FIND 8 DIVIDED BY 2

Zepler [3.9K]

Imagine that you have 8 apples which you want to hand out to 2 people. You want each person to get an equal amount of apples, so you decide to give 2 apples at a time (one apple to each), until you run out or you don't have enough to give each of the 2 people another apple. Notice that each time you give out 2 apples, you have to subtract 2 from the total left over, and each person gets one apple. Let's see what happens:
1. 8-2=6 -- each person now has 1 apple, and there are 6 more to hand out;
2. 8-2-2=4 -- each person now has 2 apples, and there are 4 more to pass out;
3. 8-2-2-2=2 -- each person now has 3 apples, and there are 2 more to distribute;
4. 8-2-2-2-2=0 -- each person now has 4 apples and there are no more apples to pass out.
Then you hand out 8 apples to 2 people and each of the get 4 apples. This meansthat 8÷2=4.

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4 years ago

Read 2 more answers

What are the solutions of the equation x^2 - 30 = x?

sashaice [31]

Answer:

x = 6 , − 5

Step-by-step explanation:

Move x to the left side of the equation by subtracting it from both sides. x^ 2 − 30 − x = 0

x2-30-x=0

Use the quadratic formula to find the solutions. − b ± √ b 2 − 4 ( a c )/ 2 a

-b±b2-4(ac)/2a

Substitute the values

a = 1 , b = − 1 , and c = − 30

into the quadratic formula and solve for x

x . 1 ± √ ( − 1 ) 2 − 4 ⋅ ( 1 ⋅ − 30 )/ 2 ⋅ 1

Simplify.

x = 1 ± 11/ 2

The final answer is the combination of both solutions.

x = 6 , − 5

8 0

4 years ago

following frequency distribution shows the daily expenditure on milk of 30 households in a locality:Daily expenditure on milk(in

valina [46]

Note: As you missed to identify what we have to find in this question. But, after a little research, I am able to find that we had to find the Mode for the data given in your question. So, I am assuming we have to calculate the the Mode. Hopefully, it would clear your concept regarding this topic.

Answer:

The mode of the data = 75

Step-by-step explanation:

Lets visualize the given data in a table to show the frequency distribution:

Daily expenditure on milk (in Rs) Number of households

0-30 5

30-60 6

60-90 9

90-120 6

120-150 4

Here the maximum frequency is 9.

So, modal class is 60-90.