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Pachacha [2.7K]
3 years ago
14

Determine whether y varies directly with x. If so, find the constant of variation and write the function rule.

Mathematics
1 answer:
Alexeev081 [22]3 years ago
4 0
Yes they are, the constant variation is that for every 3 added to the x side, 1 is added to the y side. I would really appreciate the brainliest mark thanks!
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Abatchof140semiconductorchipsisinspected by choosing a sample of 5 chips without replacement. Assume 10 of the chips do not conf
Mkey [24]

Answer:

Step-by-step explanation:

given that a batch of 140 semiconductor chips is inspected by choosing a sample of 5 chips without replacement.

10 chips do not conform to customer requirements.

i.e. out of 140 chips 10 are defective and 130 are good

a) 5 chips can be selected form 140 chips in 140C5 ways

= 416965528

b) For containing exactly one non conforming chip we have one selected from 10 and other 4 selected from 130

No of ways = 10C1 (130C4)\\=10(11358880)\\=113588800

c) For atleast one nonconforming chip we can calculate as total - no non conforming

i.e. 416965528-130C5\\= 416965528-286243776\\=130721752

4 0
3 years ago
What is 8+2x+7x equal
Veseljchak [2.6K]
I’m pretty sure it’s 9x+8
5 0
3 years ago
Read 2 more answers
In he number 956,783,529, how does the value of the digit 5 in the ten millions place compare to the digit 5 in the hundreds pla
goblinko [34]
The value of the digit 5 in the ten millions place would be 50,000,000, where the digit 5 in the hundreds place would be 500. Therefore, that would be 5x as much.   (I was having a hard time understanding, please reply and make it more clear, thanks and have a good day! =D)
3 0
3 years ago
Solve using substitution. <br> 7x-4y=-12<br> 9x-4y=-20
MrRissso [65]

Answer:y= -4

Step-by-step explanation:

1 Solve for xx in 7x-4y=-127x−4y=−12.

x=\frac{4(y-3)}{7}

x=

7

4(y−3)

​

2 Substitute x=\frac{4(y-3)}{7}x=

7

4(y−3)

​

 into 9x-4y=-209x−4y=−20.

\frac{36(y-3)}{7}-4y=-20

7

36(y−3)

​

−4y=−20

3 Solve for yy in \frac{36(y-3)}{7}-4y=-20

7

36(y−3)

​

−4y=−20.

y=-4

y=−4

4 Substitute y=-4y=−4 into x=\frac{4(y-3)}{7}x=

7

4(y−3)

​

.

x=-4

x=−4

5 Therefore,

\begin{aligned}&x=-4\\&y=-4\end{aligned}

​

 

x=−4

y=−4

​

3 0
3 years ago
What is the volume of the sphere in terms of<br> |<br> --<br> 6 in.
sineoko [7]

Answer:

904.3 cubic inches

Step-by-step explanation:

v= 4/3 π r^3

= 1.33 x 3.14 x 6^3

= 904.3 cubic inches

6 0
3 years ago
Read 2 more answers
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