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Arlecino [84]
4 years ago
8

Heather has the following averages in her math class:

Mathematics
1 answer:
zmey [24]4 years ago
3 0

Answer:

94

Step-by-step explanation:

multiply the averages by their weighted percentage

x = final exam

88(.2) + 84(.2) + 92(.4) + x(.2) = 90

solve for x

x(.2) = 90 - 71.2 = 18.8

divide both sides by 0.2

x = 94

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Phantasy [73]

Answer:

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Step-by-step explanation:

Just hardware's prices are 0.30 greater per pound, so the equation would be y=4.7x. Substitute x in for each of the values to get the prices above.

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3 years ago
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zaharov [31]
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4 years ago
Read 2 more answers
what is the expression and value of six less than the quotient of a number and two increased by 10 when n=20​
Alexxandr [17]

Answer:

The expression will be (\frac{n}{2} - 6) + 10(

2

n

−6)+10 and its value is 8.

Step-by-step explanation:

We are asked to write the expression and the value of “six less than the quotient of a number and two, increased by ten”.

If the number is n, then the expression will be (\frac{n}{2} - 6) + 10(

2

n

−6)+10 .

Now, if the value of n is 8 then the value of the expression will be (\frac{8}{2} - 6) + 10 = 4 - 6 + 10 = 8(

2

8

−6)+10=4−6+10=8 (Answer)

5 0
3 years ago
What is the volume of this rectangular prism?
Anton [14]

Answer:

15.625

Step-by-step explanation:

V=wxhxl=2.5x2.5x2.5=15.625

7 0
3 years ago
What is the equation in slope-intercept form for the line that passes through the points (−2, −1) and (1, 5)?
12345 [234]

Answer:

y=2x+3

Step-by-step explanation:

we know the slope is 2

now we are going to find b

-1=2(-2)+b

-1=-4+b

-1+4=3

3=b

7 0
3 years ago
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