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3 years ago

Simplify- 10x-8y +3x-2y

Mathematics

1 answer:

AleksandrR [38]3 years ago

5 0

Answer:

13x-10y

Step-by-step explanation:

Combine like terms;

10x+3x = 13x

-8y-2y = -10y

So it would give the equation of 13x-10y

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Write a mathematical sentence that expresses the information given below. Use g as your variable name. If necessary:type = to me

maxonik [38]

Answer:

x=12

Step-by-step explanation:

x-9=3

basically 3 + 9=12 so 12-9=3

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3 years ago

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What is y=2x? (its in the mathematics Georgia book)

skelet666 [1.2K]

The answer would be X=1/2y

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3 years ago

Explain how you could write 45 3/8 in scientific notation

vlada-n [284]

First you must change 3/8 into a decimal, so the number would be 45.375. To find scientific notation you have to move the decimal between a factor of 1-10. 4.5375 . You moved over the decimal once toward the left. so scientific notation would be 4.5375 X 10^1

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3 years ago

Six hundred paving stones were examined for cracks, and 15 were found to be cracked. The same 600 stones were then examined for

9966 [12]

Answer: 0.01

Step-by-step explanation:

Let the events are :

C = paving stones found to be cracked.

D = paving stones found to be discolored.

Given : Total stones : T = 600 (i)

C = 15

D= 27

C'∩D'= 564 (ii)

Since C'∩D' = (C∪D)' = T- C∪D (iii)

From (i) , (ii)and (ii) , we have

564 = 600- C∪D

⇒ C∪D=600- 564= 36

Formula : C∩D= C+D- C∪D

Put values , we get

C∩D= 15+27-36=6

Now ,

$P(C\cap D)=\dfrac{C\cap D}{T}=\dfrac{6}{600}=0.01$

The probability that it is both cracked and distorted is 0.01.

4 0

3 years ago

PLEASE HELP!!!! It’s timed

ira [324]

Answer:

Step-by-step explanation:

we are given opposite, adjacent and hypotenuse

and said to find cos(B)

recall trigonometric identity $\cos(\theta)=\dfrac{adj}{hypo}$

let adj and hypo be 9 and 41 respectively

$\displaystyle \: \cos( \beta ) = \frac{9}{41}$

hence our answer is b

7 0

3 years ago