2 years ago

Estimate the answers of these:1. 489+12102. 3694-20163. 5082×3124. 761÷34

Mathematics

1 answer:

KengaRu [80]2 years ago

3 0

Nana xbox ksnsnsnmakam 6

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Mr. pham wrote the equation below on the board.

valkas [14]

18 - 7x = -20.5

Subtract 18 from each side:

-7x = -38.5

Divide both sides by -7:

x = -38.5 / -7

x = -5.5 = 5 1/2

The answer is D.

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3 years ago

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X-Y-2Z =-11<br> X-2Y-Z = -11 <br> -X+Y+3Z = 14

Snowcat [4.5K]

9514 1404 393

Answer:

(X, Y, Z) = (-2, 3, 3)

Step-by-step explanation:

We can subtract the second equation from the first to get ...

Y -Z = 0

We can add the third equation to the first to get ...

Z = 3

Then ...

Y -3 = 0 ⇒ Y = 3

and ...

X -3 -2(3) = -11

X = -2 . . . . . . . . . add 9

The solution is ...

(X, Y, Z) = (-2, 3, 3)

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2 years ago

(y^-5)^-10y^10<br><br>the answers are in the image

fredd [130]

Answer:

$\large\boxed{y^{60}}$

Step-by-step explanation:

$(y^{-5})^{-10}y^{10}\qquad\text{use}\ (a^n)^m=a^{nm}\\\\=y^{(-5)(-10)}y^{10}=y^{50}y^{10}\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=y^{50+10}=y^{60}$

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3 years ago

What is the answer 101/8+(35/8+27/8

suter [353]

Answer:

$\frac{163}{8}$

Step-by-step explanation:

The sum already has common denominators so there is no need to change the denominators. Just add the numerators.

$\frac{35}{8} + \frac{27}{8} = \frac{62}{8}$

$\frac{101}{8} + \frac{62}{8} = \frac{163}{8}$

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3 years ago

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Anyone know how to do tables?

dimaraw [331]

I think table a but i’m not 100% sure, sorry

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3 years ago

Estimate the answers of these:1. 489+12102. 3694-20163. 5082×3124. 761÷34​

Estimate the answers of these:1. 489+12102. 3694-20163. 5082×3124. 761÷34