3 years ago

Ok now , these 2 loll

Mathematics

1 answer:

mylen [45]3 years ago

3 0

1. square root the area 8 sq m, so square root of 8 is 2.8.

answer is B. 2.8 square meters

2. 2.998 * 10^8

move the decimal 8 times to the right

answer is A. 299,800,000

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If you wanted to mix pure methane with water and end up with 70 gallons of 20% methane, how many gallons of each should you use?

PtichkaEL [24]

Answer:

You want 40% of 140 gallons to be methane,

so 60% of 140 gallons is water

methane: 0.4(140) = 56 gallons

water: 0.6(140) = 84 gallons

Step-by-step explanation:

3 0

2 years ago

Solve the following equation for y, and then identify the slope of the line: 9x-3y=15

sashaice [31]

$9x-3y=15\ \ \ | subtract\ 9x\\\\
-3y=-9x+15\ \ \ | divide\ by\ -3\\\\
y=3x-5\\\\
y=ax+b\ \ a-\ slope\\\\
a=3\\\\Slope\ is\ equal\ to\ 3.$

5 0

3 years ago

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Rearrange 3x - 6y = -2 to the form y=mx + c

wel

3x - 6y = -2

-6y = -3x - 2, divide through by -1

6y = 3x + 2, divide through by 6

y = 3x/6 + 2/6

y = x/2 + 1/3

5 0

3 years ago

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Today, 6 friends went out for lunch. Their total bill was $50.41 , including tax and gratuity. One of them ordered only soda and

Burka [1]

Answer:

50.41 minus 1.71 is 48.70 divided by 5 is 9.74

3 0

3 years ago

Explain how you would find 45 x 7/9 mentally

Artemon [7]

45*7/9

cross out 45 and 9

divide by 9

45/9=5

9/9=1

5*1*7

=587

=35

answer:

8 0

3 years ago