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prohojiy [21]
3 years ago
6

PLEASE HELP PLEASE HELP PLEASEEEE

Mathematics
2 answers:
icang [17]3 years ago
7 0
27 is c And 28 is d.
Delvig [45]3 years ago
5 0

Answer:

27. C

28. D

Step-by-step explanation:

The average of all grades in his fencing class, including the upcoming one, (all grades summed up divided by the amount of grades) must be equal to 86 (percent), hence C is the right answer for 27.

Solving this equation gives:

\frac{75+88+62+100+x}{5} = 86\\325 + x = 86 \cdot 5\\x = 430 - 325 = 105

So D is the right answer for 28.

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BabaBlast [244]
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3 years ago
I need help with this
DedPeter [7]

I remember some of this from 6th grade!
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3 years ago
The diagonals of rectangle nopq intersect at point r. if qr=3x-4 and np=5x+20, solve for x.
FrozenT [24]
2(3x - 4) = 5x + 20
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subtract 5x from both sides
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7 0
3 years ago
Read 2 more answers
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓<br> No Words <br> Part 1
MissTica
3m + 2n= p solve for n

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divide both sides by 2
n = p/2 - 3m/2
-----------------------

xy - 5 = k solve for x
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3 0
3 years ago
Can someone help me please
Leviafan [203]

Answer:

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3 0
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