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3 years ago

Plz help im learning about integers.

Mathematics

1 answer:

Leona [35]3 years ago

8 0

18. -4, 4
19. -38, 38
20. -260, 260
21. -4092, 4092.

I might be wrong but...

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The biology club has 18 members 3 girls and 15 boys.What is the ratio of girls to boys in the biology club?

VashaNatasha [74]

A.1:5 because 3 came first and 3:15 3÷3=1 15÷3=5 Therefore the answer is =1:5

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3 years ago

Simplify y 2 + 4y - 16y + 3y 2.

algol13

First, add or subtract all variables
y2 + 4y - 16y + 3y = -7y
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3 years ago

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Consider M, N, and P. collinear points on MP.

Kobotan [32]

Answer:

See explanation

Step-by-step explanation:

There are three possible cases:

1. Point N lies between M and P, then MN + NP = MP. Consider needed difference:

$\dfrac{MN}{NP}-\dfrac{MN}{MP}=\dfrac{MN}{NP}-\dfrac{MN}{MN+NP}=\dfrac{MN(MN+NP)-MN\cdot NP}{NP(MN+NP)}=\\ \\=\dfrac{MN^2+MN\cdot NP-MN\cdot NP}{NP(MN+NP)}=\dfrac{MN^2}{NP(MN+NP)}$

2. Point N lies to the right from point P, then MP + PN = MN. Consider needed difference:

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3. Point N lies to the left from point M, then NM + MP = NP. Consider needed difference:

$\dfrac{MN}{NP}-\dfrac{MN}{MP}=\dfrac{MN}{MN+MP}-\dfrac{MN}{MP}=\dfrac{MN\cdot MP-MN(MN+MP)}{MP(MN+MP)}=\\ \\=\dfrac{MN\cdot MP-MN^2-MN\cdot MP}{MP(MN+MP)}=\dfrac{-MN^2}{MP(MN+MP)}$

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2 years ago

Given side AB in ΔABC has length x, what is the length of side AC?

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Answer:

Step-by-step explanation:

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2 years ago

Jack is renting a boat to go fishing with his friends. One rental company charges a fee of $20 plus $13.50 an hour. A second ren

zvonat [6]

Answer:

4 hours of rental

Step-by-step explanation:

y1 = 20 + 13.5x

y2 = 6 + 17x

20 + 13.5x = 6 + 17x

20 - 6 = 17x - 13.5x

14 = 3.5x

x = 4

Costs y1 and y2 are equal on renting for 4 hours

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2 years ago

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