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drek231 [11]
4 years ago
6

If your chemistry grade is broken down so that 70% of it is exams, 20% is a lab, and 10% is homework, and your average scores ou

t of 100 points in each area are:
exams 85
labs 75
homework 96
Calculate your weighted average.
Mathematics
1 answer:
vodomira [7]4 years ago
6 0
84.1

(85 x 0.7) + (75 x 0.2) + (96 x 0.1) = 84.1
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A standard showerhead in Sonia's house dispenses 12 gallons of water per minute. Sonia changed this showerhead to an energy-savi
diamong [38]

Sonia saves a lot of water. To figure this out, you plug the number 8 into the equation, replacing it with the variable x. y = 3(8). Therefore, y=24. To find out how much water she saves, you have to also figure out how much water she was using for 8 minutes with the other shower head, the one that wastes the water. Since it dispenses 12 gallons per minute, you multiply that by 8 minutes and get 96. Subtract 24 from 96 and get 72. Which I think is your answer. Then again, I'm in high school so I most likely am wrong.

7 0
4 years ago
Item 3 is unpinned. Click to pin.
Ratling [72]

Answer:

84%

Step-by-step explanation:

i am so sorry if i am wrong. pls no hate tho

7 0
3 years ago
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Which of the following expressions is equivalent to the expression a^2/3
vladimir1956 [14]

∛a² → C

From the ' law of exponents '

a^{\frac{m}{n} } = \sqrt[n]{a^{m} }


3 0
3 years ago
184=1/2x(8.5+14.5)<br><br> how do i cancel out the fraction?
Olin [163]
184 = ¹/₂x(8.5 + 14.5)
184 = ¹/₂(23)
<u>184</u> = <u>11¹/₂x
</u>11¹/₂   11¹/₂
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7 0
3 years ago
If a family has 6 children, in how many ways could the parents have 3 boys and 3 girls?
Jlenok [28]

The parents could have 3 boys and 3 girls in 400 ways

<h3>How to determine the number of ways?</h3>

The given parameters are

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Boys, r = 3

Girls, r =3

The number of combination is:

Ways = ^nC_{r1} *^nC_{r2}

So, we have:

Ways = ^6C_3 *^6C_3

Apply the combination formula

Ways = \frac{6!}{3!3!} *\frac{6!}{3!3!}

This gives

Ways = 400

Hence, the parents could have 3 boys and 3 girls in 400 ways

Read more about combination at:

brainly.com/question/11732255

#SPJ1

4 0
2 years ago
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