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OverLord2011 [107]
3 years ago
9

The perimeter of the rectangle below is 72 units. Find the value of y

Mathematics
1 answer:
ss7ja [257]3 years ago
6 0

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

2(3y+2)+2(4y-1) = 72\\6y+4+8y-2=72\\14y+2=72\\14y=70\\y=5

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The price of a visit to the dentist is $50. if the dentist fills any cavities an additional charge of $100 per cavity gets added
klio [65]
100x+50= your answer

For example if 3 cavities are filled you would have to multiply 100(3)+50=350

I hope this helps!
6 0
3 years ago
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
IgorLugansk [536]

Answer:

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

Step-by-step explanation:

Given that;

mean x" = 5.4

standard deviation σ = 0.7  

n = 6

Null hypothesis H₀ : μ = 5.0  

Alternative hypothesis H₁ : μ > 5.0    

∝ = 0.025    

now,

t = ( 5.4 - 5.0) / ( 0.7/√6) = 0.4 / 0.2857 = 1.4

degree of freedom df = n-1 = 6 - 1 = 5

T critical = 2.571

Therefore; t < T critical,

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

3 0
3 years ago
Find the median of -12/4, 18/5, -25,1/5,10
sashaice [31]
Arrange from smallest to largest
-25, -12/4, 1/5, 18/5, 10
chose the middle number
1/5
4 0
3 years ago
Got them.... I think the war is finally over..
lisabon 2012 [21]

Answer:

LOL THAT CAT POOR CAT

Step-by-step explanation:

nothing to see here

7 0
3 years ago
PLSSS? i dont really get it<br> Thanks
solmaris [256]

Answer:

A) 83 km/ hour

B) 2/7 penalties / game

C) $16 / CD

D) 9 donuts / box

Step-by-step explanation:

A)

For this question they are asking for the distance traveled in 1 hour.

Since 747km was travelled in 9 hours, we divide 747 by 9 to find the distance travelled in 1 hour

747 ÷ 9 = 83

The unit rate is 83 km/ hour

B)

You have to find the number of penalties per game

Like before divide 10 by 35:

10 ÷ 35 = 10/35 = 2/7

2/7 penalties / game

C)

Find the cost of 1 CD :

64 / 4 = 16

$16 / CD

D)

Find the amount of donuts per box:

72/8 = 9

9 donuts per box

-Chetan K

3 0
3 years ago
Read 2 more answers
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