Given that BC = 7, AB = 17.89, and C is between A and B, what is the length of ?

2 answers:

8 0

*assuming that ABC is a straight line**
then you have 
AB = 17.89 ..... this is the length of the whole line 

BC is a part of the line = 7 

therefore the length of the other part = 17.89 - 7 

= 10.89

Monica [59]4 years ago

4 0

17.89-7=10.89
You know that the distance from A to b is 17.89 and the distance from b to c is 7. So the length from a to c is the whole distance(a to b) subtracted by a portion of the distance(b to c) giving us 10.89

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What number is 25% of 400 please show work thank you

ANEK [815]

Answer:

100

Step-by-step explanation:

well, you can just use a calculator, or your mind if that's possible, to solve this.

at least, what i think you're asking.

400 × 0.25 = 100.

this one is extra easy because you should know that 25% is a quarter, and 400 can just be divided by 4 to get your answer.

6 0

2 years ago

What is 7 times the sum of a squared and b minus 4 times the sum of a squared and b

spayn [35]

The sum of a squared and b is given by
$a^2+b$

7 times the sum of a squared and b is given by
 $7(a^2+b)$
while 4 times the sum of a squared and b is given by
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Therefore, 7 times the sum of a squared and b minus 4 times the sum of a squared and b is given by

$7(a^2+b)-4(a^2+b)=3(a^2+b)$