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Law Incorporation [45]
2 years ago
7

Simplify the expression. Write the answer using scientific notation.

Mathematics
1 answer:
GREYUIT [131]2 years ago
7 0

Answer:

B.

2.52 \times 10 ^{ - 2}

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Help ur friend out would ya mate?
Natalka [10]

Answer:

49

Step-by-step explanation:

multiply them by 7

21 = w —28

w = 28 + 21

w = 49

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3 years ago
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What is the solution to use the following equation 5(2x-6)+20=10
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Answer:

first you distribute the five making it 10x-30+20=10

second you combine like terms making it 10x-10=10

third you isolate the variable making it 10x=20

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Use the calculator to find the value of x for the equation: × + 3.2=6.3​
Harman [31]

Answer:

x = 3.1

Step-by-step explanation:

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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.

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3 0
3 years ago
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