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KonstantinChe [14]
3 years ago
15

Can somebody help me with this one thank you.

Mathematics
1 answer:
gtnhenbr [62]3 years ago
4 0
It would be 11 liters
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Y varies directly with x. When x is 4 y is 8. Find y when x = 10.
grandymaker [24]

Step-by-step explanation:

y = 4 when x = 8 So, 4 = 8k

k = 1/2

y = (1/2)x

Therefore, when x = 10, y = (1/2)(10) = 5

4 0
2 years ago
A) what is 42%of 250? please explain the method......​
arsen [322]

Answer:

105

Step-by-step explanation:

What is 42% of 250?

Let's break this question down.

We have:

42% – A percent is a fraction out of 100. 100% being fully complete. We can express 42% as 42/100 or 0.42.

of – This symbolizes multiplication.

250 – This is our total.

Now let's set up an equation.

42% of 250

0.42 • 250 = ?

Now, multiply.

105

This is your answer.

42% of 250 is 105.

Hope this helps!

4 0
2 years ago
Read 2 more answers
Hello there!
jok3333 [9.3K]

Answer:

4. dy/dx = -2

8. dy/dx = 1/2 x^(-3/2)

10/ dy/dr = 4 pi r^2

Step-by-step explanation:

4.  y = -2x+7

dy/dx = -2(1)

dy/dx = -2

8.  y = 4 - x^-1/2

 dy/dx =  - (-1/2x^ (-1/2-1)

 dy/dx = 1/2 x^(-3/2)

10.  y = 4/3 pi r^3

dy/dr = 4/3 pi  (3r^2)

dy/dr = 4 pi r^2

7 0
3 years ago
Multiply 3/7 by the reciprocal of -3/14​
Alexandra [31]

Multiplying 3/7 by the reciprocal of -3/14,

\frac{3}{7} \times  \frac{14}{ - 3} \\  =  \frac{1}{1} \times  \frac{2}{ - 1} \\  =  \frac{2}{ - 1} \\  =  - 2

Hope it helps!!

7 0
2 years ago
Help pleaseee Im trying to get an A in class
likoan [24]

Answer:

191

Step-by-step explanation:

Sorry it's sideways. I drew a box chart for this. First, fill in what you know: the number of white and black beads Ally has. Then, calculate how many black beads Betty has (Ally's number, 59, minus 35.) 59-35 = 24.

They tell you the total number of beads is 346. Add up Ally's total to get 131, then subtract that from 346. That's Betty's total beads, 215.

Last, subtract the 24 black beads Betty has from the 215 total to get 191.

3 0
3 years ago
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