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hoa [83]
3 years ago
13

13. If B is the midpoint of AC and AC = 8x -20, find BC. AB= 3x-1​

Mathematics
1 answer:
maks197457 [2]3 years ago
3 0

Answer:

\Huge \boxed{5x - 19}

\rule[225]{225}{2}

Step-by-step explanation:

A ——— B ——— C

AC = 8x - 20

AB = 3x - 1

BC = AC - AB

BC = (8x - 20) - (3x - 1)

Distributing negative sign.

BC = 8x - 20 - 3x + 1

Combining like terms.

BC = 5x - 19

\rule[225]{225}{2}

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Scorpion4ik [409]

Answer:

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4 0
2 years ago
I need help finding the lowest term for -8/9+11/15​
Liono4ka [1.6K]

Answer:

-7/45

Step-by-step explanation:

First, find the lowest common denominator for 9 and 15. It's 45. Make both fractions over 45 by multiplying the top and bottom by the same number.

-\frac{8}{9} +\frac{11}{15}

= -\frac{8*5}{9*5} +\frac{11*3}{15*3}  Since 15*3=45, multiply the top by 3 also.    Since 9*5=45, multiply the top by 5 also.

= -\frac{40}{45} +\frac{33}{45}

= \frac{-40+33}{45}    Combine the fractions

= -\frac{7}{45}    Answer in lowest terms

6 0
3 years ago
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fgiga [73]

Answer:

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Step-by-step explanation:

8 0
3 years ago
I NEED HELP ASAP PLEASE PLOT IT BY DRAWING IT
IRISSAK [1]

Answer:

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3 0
3 years ago
Tom and Brian are hiking towards each other at the opposite ends of a trail that is 21 miles long. Tom hikes uphill at a speed o
Arturiano [62]

Answer:

3.5 hours

Step-by-step explanation:

Distance = 21 miles

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Speed * time = distance

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Brian = 4 mph

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4t + 2t = 21

6t = 21

t = 21 / 6

t = 3.5 hours

4 0
3 years ago
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