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mash [69]
3 years ago
14

........................

Mathematics
1 answer:
kolbaska11 [484]3 years ago
6 0

you need help with sum

.........................

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Sandra says that 90 divided by -9 equal 10. Is she correct ? Explain.
deff fn [24]

Answer:

-10

Step-by-step explanation:

In multiplying and dividing if there is 2 negatives it is always a positive but if it is 1 negative and a positive it is always a negative. This is only for multiplying and dividing. So the answer is negative 10.

6 0
3 years ago
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Imagine you are teaching a younger student how to factor. Describe in full sentences what you would say to teach the young stude
djyliett [7]

Answer:

x^2+ 4x - 21 =(x-3)(x+7)

Step-by-step explanation:

To factor the trimonial: x^2+ 4x - 21, we follow these steps:

Step 1: Multiply the first and last term

-21 \times x^2=-21x^2

Step 2: List out product factors of the term derived above

-21=-1 \times 21\\ -21=-3 \times 7\\-21=3 \times -7\\-21=1 \times -21

Step 3: Determine which of the factors sum up to the middle term 4x

The required product is: -3 and 7

Therefore: -3x+7x=4x

Step 4: Replace the middle term by the expression derived in step 3 and factorize.

x^2+ 7x -3x- 21\\=x(x+7)-3(x+7)\\=(x-3)(x+7)

3 0
3 years ago
Find the volume of the irregular figure
devlian [24]

Answer:

is there a picture i dont see them

Step-by-step explanation:

3 0
2 years ago
Help plz I need help
Whitepunk [10]
The first column is meters and the second column is centimeters. =)
8 0
3 years ago
Read 2 more answers
Can anybody help pls
Gekata [30.6K]

Answer:

2t

Step-by-step explanation:

The expressions are not the same because different terms are negative. We can visualize the difference by rewriting the expressions as 13t + (-2t) and (-13t) + 2t. In the first expression, 13t-2t, the 2t is negative because it is being subtracted, and subtracting a number is the same as adding a negative.

6 0
3 years ago
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