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3 years ago

The estimated sum of 857 + 234 is

Mathematics

1 answer:

Llana [10]3 years ago

6 0

Answer:

1,091

hope it helps.

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Z + 21/–1 = –3. z+21/-1 is a fraction

Vika [28.1K]

Answer:

No Answer

Step-by-step explanation:

$z+\frac{21}{-1} =-3*z+\frac{21}{-1}$

cancel out same on both sides

$0=-3$

N/A

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3 years ago

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32 lb 12 ounces equals in pounds

Radda [10]

Answer:

32 3/4 lb

Step-by-step explanation:

32 lb 12 oz = ? lb

Rewrite 12 oz as (12/16) lb.

Then:

32 lb 12 oz = 32 lb + (3/4) lb, or 32 3/4 lb

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3 years ago

Explain how to find the mean of a data set

leva [86]

To find mean you add all the values in your data together and divide by the # of values you have.

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3 years ago

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Factor the greatest common factor from the polynomial 3x^2 + 6x -9

ryzh [129]

Answer:

$3(x+3)(x -1)$

Step-by-step explanation:

$3x^2 + 6x -9$

All the terms in this polynomial are divisible by 3. Factor 3 out of this polynomial:

$= 3(x^2 + 2x -3)$

Now, factor inside the parentheses by grouping:

$= 3(x^2 -1x+3x -3)$

We knew to split the +2x up into -1x and 3x because -1 and 3 multiply to get -3, which is the last value in the polynomial.

$= 3(x(x -1)+3(x -1))\\= 3(x+3)(x -1)$

Therefore, the final factored polynomial is $3(x+3)(x -1)$ .

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2 years ago

Producto de (10x+7)(10x-7)

Marat540 [252]

Answer:

(10x−7)^2

Step-by-step explanation:

(10x+7)(10x-7)

i stead of making it a "100" since they are both the same but positive and negative () and bring it to the power of 2

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3 years ago