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ollegr [7]
2 years ago
5

I need with explanation ​

Mathematics
1 answer:
Vitek1552 [10]2 years ago
5 0

Which of the following (1, 16, 27, 81) is not a square number?

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Work out (3.6 times 10^-5) divided by (1.8 times 10^2) Give your answer in simplest form.
romanna [79]

Answer:

( 3.6 × 10 ^-5 ) ÷ ( 1.8 × 10² ) = 2 × 10^-7

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3 years ago
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Gre4nikov [31]
73 I believe I’m not sure
7 0
2 years ago
-QUICK PLEASE-
Zepler [3.9K]

Answer:

Option B. 0.75 gallons is the right answer.

Step-by-step explanation:

Let the load of dishwasher used in house A = x gallons

Let the load of dishwasher used in house B is = y gallons

and similarly we assume for house C = z gallons

Now from the given question

On Friday amount of water used in all three houses = 17.5 gallons

From the table we will make the equation

x + 2y + 2z = 17.5-----(1)

For Saturday

2x + 3y + 4z = 31.5 ----(2)

For Sunday

2x + 2y + 3z = 24.75 -----(3)

By subtracting equation 3 from 2

y + z = 31.5 - 24.75 = 6.75 ------(4)

Equation (1) multiplied by 2 - equation (2)

2×(x + 2y + 2z) - (2x + 3y + 4z) = 17.5×2 - 31.5

y = 35 - 31.5 = 3.5

By putting y = 3.5 in the equation (4)

z = 6.75 - 3.5 = 3.25

By putting y = 3.5 and z = 3.25 in the equation (1)

x + 7 + 6.5 = 17.5

x = 17.5 - 13.5 = 4

Now the difference between load of dishwasher that uses least water and the most.

x - z = 4 - 3.25 = 0.75 gallons

Option B is the right answer.

6 0
3 years ago
To solve the Inequallty 4x< 8, you would divide both sides of the inequality by 4.
pshichka [43]
The answer is true.
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2 years ago
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