3 years ago

Point B is between points A and C. If AB = 3x -1, BC=9x+8, and AC=139, find the measure of BC

Mathematics

1 answer:

Cloud [144]3 years ago

4 0

Answer:

BC = 107

Step-by-step explanation:

Point B is between A and C.

AB = 3x-1

BC = 9x+8

AC = 139

We need to find BC for which we need to find x first.

<u>Finding 'x':</u>

We know that AB + BC = AC

*putting the values of AB, BC and AC*

3x-1+9x+8 = 139

12x+7=139

12x=132

x=132/12

x=11

Now, BC = 9x+8 = 9(11) +8

BC = 99+8

BC = 107

You might be interested in

35 = 2w+4 solve for w

Ipatiy [6.2K]

Answer:

15.5

Step-by-step explanation:

35 - 4 = 2w

31 = 2w

w = 15.5

7 0

3 years ago

Read 2 more answers

Mary needs 45 craft sticks to build a model for her science project. If the craft sticks cost 10 cents each, how much will 45 cr

Snowcat [4.5K]

Answer:

the answer is B

Step-by-step explanation:

3 0

3 years ago

a car reduced its speed in a ratio of 2 to 3 if the final speed was 90 km per hour then what was the original speed.

Licemer1 [7]

Answer:

Orginal Speed is 135

Step-by-step explanation:

The ratio of final speed: original speed is

$\frac{2}{3\\}$

We know that 90 km is it final speed so, we set up a proportion

$\frac{2}{3} =90/x$

$2x=270\\x=135$

8 0

2 years ago

After school Philippe spent 1 3/4 hours at baseball practice, 2 1/4 hours on homework, and 1/4 hour getting ready for bed. About

marshall27 [118]

Answer:

4 hours. 1 3/4 is about 2, and 2 1/4 rounds to 2. 1/4 would round to 0, but it would not affect the estimate's accuracy much because we rounded up by 1/4 on 1 3/4 already. Philipe spent about 4 hours on activities.

Step-by-step explanation:

4 0

3 years ago

PLS HELP! What is 4 1/3 multiplied by 2 1/4

Blababa [14]

Answer:

your answer would be 9 3/4

hope this helps

here our your choices for the other guy

A 2 1/3

B 5 1/2

C 1 1/9

D 2 1/6

8 0

3 years ago