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masha68 [24]
2 years ago
11

Factor –7x3 + 21x2 + 3x – 9 by grouping. What is the resulting expression?

Mathematics
2 answers:
spin [16.1K]2 years ago
3 0

Answer:

The answer is the third option

kogti [31]2 years ago
3 0

Answer:

(3–7x²)(x–3)

Step-by-step explanation:

If you apply the distributive property in (3–7x²)(x–3), you obtain:  

3x-9-7x²(x)+21x²

3x-9-7x³+21x²

 

When you order the expression, you have:  

-7x³+21x²+3x-9

 

Then, the answer is (3–7x²)(x–3)

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Klay's lunch cost $6. This is $2 less than Ella's lunch cost. How much did
RUDIKE [14]

Answer:

 6+2=8 6+2=x       x=8

Step-by-step explanation:

6+2=8       6+2=x

3 0
3 years ago
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A random variable is a function that assigns numerical values to the outcomes of a random experiment. True or false?
Alex787 [66]

Answer:

FALSE

Step-by-step explanation:

A random variable is a variable whose outcome depends on random criteria, such as a lottery game in which any number can be drawn randomly. That way, a randomized experiment will have random results that are not predetermined. For example, if the lottery has 80 numbers, the random variable function can achieve any result, which will depend on random criteria such as the luck of the player.

4 0
3 years ago
How many square feet are in a room 4'-6'×3'-6"
Reil [10]

Answer:

  15.75 ft²

Step-by-step explanation:

6" is 0.5 ft, so the dimensions in feet are 4.5 ft by 3.5 ft. The area is the product of these dimensions:

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8 0
3 years ago
Check that x=2 and y=5 is a solution of both equations below:<br> X+2y=12<br> 3x+6y=36 *
melamori03 [73]

Answer:

yes

Step-by-step explanation:

Substitute x = 2 and y = 5 into the left side of the equations and if equal to the right side then they are a solution.

x + 2y = 2 + 2(5) = 2 + 10 = 12 ← True

3x + 6y = 3(2) + 6(5) = 6 + 30 = 36 ← True

Thus x = 2, y = 5 is a solution to both equations

7 0
3 years ago
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Sue's Fruit Stand sells 20 different types of fruits. The table below shows the numbers of fruits that have certain percentages
Ksenya-84 [330]

Answer:

The first histogram is the answer.

Step-by-step explanation:

Like any other questions, you can use the process of elimination to answer this question.

There are only one fruit that has a water content of 60 - 64 %

Right away you can eliminate the second answer choice.

There are two fruits that has a water content of 65 - 69 %

All the other three has the same thing

There are only two fruits that has a water content of 70 to 74 %

Right away answer choice three can be eliminated

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There are 9 friuts that are 80 - 84 % full with water

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THE ANSWER IS THE FIRST HISTOGRAM.

5 0
3 years ago
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