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luda_lava [24]
3 years ago
13

E varies directly with the square root of C. If E=40 when C=25 find: E when C= 49

Mathematics
2 answers:
Lesechka [4]3 years ago
8 0

Answer:

Step-by-step explanation:

tiny-mole [99]3 years ago
6 0

Answer: E = 56

Step-by-step explanation:

E is proportional to √C

To remove proportionality, introduce a constant (k).

E = k × √C

From question,

E = 40 and C = 25

So,

40 = k ×√25

40 = k × 5

k = 8

Now,

C = 49

k = 8

E = ?

E = k√C

E = 8 × √49

E = 8 × 7

E = 56

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30% of $50 is equal to?
Alex17521 [72]

Answer:

15

Step-by-step explanation:

5 0
3 years ago
Use the table to work out the values of a, b, c and d <br> PLEASE HELP!!!
Taya2010 [7]

Answer:

a = 10, b = 5, c = 14, d = 25

Step-by-step explanation:

Plug in -2 for x ....

y = 2(-2)^2 + -2 + 4

y = 2(4) + 2

y = 10

Plug in -1 for x ....

y = 2(-1)^2 + -1 + 4

y = 2(1) + 3

y = 5

Plug in 2 for x ....

y = 2(2)^2 + 2 + 4

y = 2(4) + 6

y = 8 + 6

y = 14

Plug in 3 for x ....

y = 2(3)^2 + 3 + 4

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8 0
3 years ago
Adjust the estimated digit in the quotient then divide
Elodia [21]
There's not enough details. Is there a question, or was there supposed to be a picture with it? otherwise I don't understand.
8 0
3 years ago
If <img src="https://tex.z-dn.net/?f=f%28x%29%3D%20%5Cfrac%7B1%7D%7Bx-2%7D%20" id="TexFormula1" title="f(x)= \frac{1}{x-2} " alt
Darina [25.2K]
I think, the answer will be -7

We have:
f(x)=1/(x-2)
g(x)
Then:
(fg)(x)=[1/(x-2)](g(x))=g(x)/(x-2)
Now; we calculate: (fg)`(x)
Remember: (u/v)=(u`v-vu´)/v²
Therefore:

(fg)´(x)=[g´(x)*(x-2) - 1*g(x)]/ (x-2)²
We know that:
g´(1)=-1
(fg)´(1)=6
Therefore:
6=[-1*(1-2)-g(1)]/(1-2)²
6=[1-g(1)]/1
6=1-g(1)
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Answer: B. -5
4 0
4 years ago
Savannah's take home pay is $3246.00 each month, determine the
lilavasa [31]

Answer:

<u>Savannah budgets the 40.97% of her income for Housing, 8.32% for Utilities,  20.02% for Transportation, 6.93% for Food, and 10.78% for Personal expenses.</u>

Step-by-step explanation:

<u>1. Housing. </u>

1330/3246 * 100 = 0.4097 * 100 = 40. 97%

<u>2. Utilities.</u>

270/3246 * 100 = 0 .0832 * 100 = 8.32%

<u>3. Transportation.</u>

650/3246 * 100 = 0. 2002 * 100 = 20.02%

<u>4. Food.</u>

225/3246 * 100 = 0. 0693 * 100 = 6.93%

<u>5. Personal.</u>

350/3246 * 100 = 0.1078 * 100 = 10.78%

4 0
4 years ago
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