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MArishka [77]
3 years ago
10

Please help. linear equations.

Mathematics
1 answer:
postnew [5]3 years ago
8 0

Answer:

wow

Step-by-step explanation:

wkanda might never be forever which means that still could be quite ttue?

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MATH QUESTION HELP ME PLS, KINDA URGENT!!
DochEvi [55]

Answer:

x= 2

y= 7

z= 4

Step-by-step explanation:

Equation 1: x+y+z=13

Equation 2: x-z= -2

Equation 3: -2x+y=3

Add equation 2 and 1

(x+y+z)+(x-z)= 13 -2

2x+y= 11

Add this to equation 3

(-2x+y)+(2x+y)= 11+3

2y= 14

y= 7

Plug in y= 7 to equation 3

-2x+(7)= 3

-2x+7=3

-2x= -4

x= 2

Plug x=2 into equation 2

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4 = z

5 0
3 years ago
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A scientist mixes water (containing no salt) with a solution that contains 30% salt. She wants to obtain 180 ounces of a mixture
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Answer:

water : 90 ounces

salt solution: 90 ounces

Step-by-step explanation:

Call w the amount of water and call the solution containing 30% salt.

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So:

The amount of mixture will be:

w + s = 180

the amount of salt will be

0w + 0.3s = 180 * 0.15

0.3s = 27

s = 90\ ounces

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3 years ago
A circular plate has a diameter of 16 inches. What is the area
krek1111 [17]

<em>Answer:</em>

<h3>The answer is 201 in²</h3>

<em>Explanation:</em>

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iVinArrow [24]

Answer:

Step-by-step explanation:

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d. (56mm)^3 =  175616 mm^3

e. 10 m * 1 m^2 (because of the square) = 10m^3

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2 years ago
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