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vredina [299]
3 years ago
13

Abi has 20 cents. Se bought x pencils for 3 cents each. If y equals the number of cents left, write an equation that shows the d

ependence of y on x. What is the domain of the function?
Mathematics
1 answer:
Anna35 [415]3 years ago
7 0

Answer:

<u>The function would be:</u>

  • y = 20 - 3x

<u>Since y should be positive or zero:</u>

  • 20 - 3x > 0
  • 3x < 20
  • x < 7

So x can get values from 0 to 6.

<u>The domain is:</u>

  • x∈N, x = [0, 6]
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If ƒ (x ) = 2x 2 + 3, find ƒ (3).
dimulka [17.4K]

Answer:

f(x) = 2 \times 2 + 3 \\ f(3) = 4  + 3 \\ 3f = 7 \\ f =  \frac{7}{3}

<h2>Hope it help you</h2>
3 0
3 years ago
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Help Ill give 100 points!
nata0808 [166]

Answer:

0, 1, 1/2

Step-by-step explanation:

First you would have to make them have the same denominators.

The lowest one they share is 24.

What ever you do to the bottom you have to do to the bottom.

1/6, times each by 4.

1 * 4 = 4

6 * 4 = 24

4/24.

Now you have to do the same thnig for 5/8.

But times it by 3, since 8 times 3 is 24.

5 * 3 = 15

8 * 3 = 24

15/24

Now subtract.

15 - 4 = 11/24

the difference is close to one half.

4/24 = 1/6 is close to 0.

15/24 = 5/8 is close to 1.

4 0
3 years ago
Can anyone help me please? I have no idea what to do! :'(
liberstina [14]

Answer:

7) 10^(3/2)

8) 2^(1/6)

9) 2^(5/4)

10) 5^(5/4)

Step-by-step explanation:

7)  (√10)^3 = 10^(3/2)

8)  6 root 2 = 2^(1/6)

9)  (4 root 2)^5 = 2^(5/4)

10) (4 root 5)^5 = 5^(5/4)

5 0
3 years ago
2x + 3y = 15<br> x + y = 6<br> Work out the values of x and y.
Igoryamba

Answer:

x is 3

and

y is 3

Step-by-step explanation:

(2*3)+(3*3) = 15

6+9 = 15

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3 years ago
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tankabanditka [31]

Answer:

0 = 0

Step-by-step explanation:

8 0
4 years ago
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