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klio [65]
3 years ago
8

Five sixths of the 300 triathletes completed the course

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
4 0
5/6 of 300 is 250 people that completed the course.
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Graph a line that contains (-6,1) and has the slope of 5
xeze [42]

Answer:

y - 1 = 5(x+6)

y - 1 = 5x + 30

y = 5x + 29

8 0
3 years ago
How do you solve 2(x+7)+x=20
alexira [117]
2(x+7) + x=20
(2)(x) + (2)(7) + x=20  Distribute 
2x+14 + x =20
(2x+x) + (14) =20  Combine Like Terms 
3x+14=20 
    - 14  -14             Subtract 14 from both sides 
3x = 6 
3x/3 6/3                  Divide Both Sides by 3 
 
x = 2 


Let me know if you still don't understand 

4 0
3 years ago
a force of 2 pounds is needed to stretch a spring 8 inches.what force is required to stretch the spring 16 inches
Korvikt [17]

Answer:

Four (4) pounds

Step-by-step explanation:

Because we required two (2) pounds to stretch the spring eight (8) inches, we need double the force to stretch it sixteen (16) inches. Sixteen is just double the original amount, meaning we need four (4) pounds to stretch the spring sixteen inches.

Hope this helps!

5 0
3 years ago
Simplify (5+1)^2-(12+3^2)/3
lakkis [162]

Answer:

29

Step-by-step explanation:

Simplify the expression (5+1)^2-\dfrac{12+3^2}{3} step by step:

1.

(5+1)^2=6^2=6\cdot 6=36

2.

\dfrac{12+3^2}{3}=\dfrac{12+3\cdot 3}{3}=\dfrac{12+9}{3}=\dfrac{21}{3}=7

Now,

(5+1)^2-\dfrac{12+3^2}{3}=36-7=29

3 0
3 years ago
Read 2 more answers
A distribution x is known to have a mean value of 5 and a standard deviation of 5. what is its mean square value (i.e., the expe
telo118 [61]
\mathbb V(X)=\mathbb E(X^2)-\mathbb E(X)^2
\implies 5^2=\mathbb E(X^2)-5^2
\implies\mathbb E(X^2)=50
8 0
3 years ago
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