3 years ago

My brother is 5 years older than me. My sister is 3 years younger than me. a How old will my sister be when I am 17?

Mathematics

1 answer:

pentagon [3]3 years ago

8 0

I think the answer is 14

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-3(2b-7) in stander from asap

3241004551 [841]

Answer:

Step-by-step explanation:

= > - 3 ( 2b - 7 )

= > - 6b + 21

<h3>Hope it helps you!</h3>

6 0

3 years ago

If 4x^2 - 100 = 0, the roots of the equation are

ololo11 [35]

$4x^2-100=0 \ \ \ \ \ \ |+100 \\
4x^2=100 \ \ \ \ \ \ \ \ \ \ \ |\div 4 \\
x^2=25 \\
x=\pm \sqrt{25} \\
x=\pm 5 \\
x=-5 \hbox{ or } x=5$

The answer is (3) -5 and 5.

5 0

3 years ago

1/x + 1/3x =6 how do you solve this equation for x

Elodia [21]

Answer:

x = 2/9 (or = 0.222)

Step-by-step explanation:

1/x + 1/(3x) =6 (multiply both sides by 3x)

(1/x) (3x) + [1/(3x)](3x) =6 (3x)

3 + 1 = 18x

4 = 18x

x = 4/18

x = 2/9 (or = 0.222)

3 0

3 years ago

Is this a function?<br>

zhuklara [117]

No I don’t believe it is

4 0

3 years ago

(-33)+(-7)=

sasho [114]

Answer:

-40

-6

Step-by-step explanation:

-33+-7 you are adding two negatives

9+(-15) you are adding a negative to a positive which gets you closer to zero

5-(-46) you are subtracting a negative which is adding

7 0

3 years ago