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Ksenya-84 [330]
3 years ago
15

Which relation is a function?

Mathematics
1 answer:
Pavel [41]3 years ago
5 0

Answer:

The third one (y=x^3) is a function because it passes the vertical line test.

Step-by-step explanation:


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Harrison has $9.30 in his coin collection all in pennies and dimes the number of dimes is three times the number of pennies how
Vsevolod [243]

Answer:

Number of Pennies = 30

Number of Dimes = 90

Step-by-step explanation:

Let the number of pennies be p and number of dimes be d

We can write 2 equations and use substitution method to solve.

<u>Total value of all the coins is 9.30:</u>

We can write:

0.01p + 0.1d = 9.30

Note: value of penny is 0.01 and dime is 0.1, in dollars

<u>Number of dimes is 3 times number of pennies:</u>

We can write:

d = 3p

Now putting 2nd equation in first and solving for p:

0.01p + 0.1(3p) = 9.30

0.01p + 0.3p = 9.30

0.31 p = 9.30

p = 9.30 /0.31

p = 30

Now we know d = 3p, so d = 3 (30) = 90

Hence

Number of Pennies = 30

Number of Dimes = 90

5 0
3 years ago
Find x. Round your answer to the nearest tenth of a degree.
Kaylis [27]

Answer:

Step-by-step explanation:

hello :

tanx= 15/20

x=36.97°

7 0
3 years ago
Jay is paid £2000 each month. He saves 6% of the £2000 each month. How many months will it take Jay to save £480? ​
BARSIC [14]

Answer:

4 months

Step-by-step explanation:

(2000 *6)/100 = 120

120x = 480

X = 480/120

X = 4 months

4 0
2 years ago
Pls helpppp ASAP I’m so confused
Sidana [21]

Answer:

2268 in3

Step-by-step explanation:

7 0
2 years ago
Given the definitions of f (x) and g(x) below, find the value of (gof)(-8).
aliya0001 [1]

Answer:

(gof)(-8) = 210

Step-by-step explanation:

(gof) = (-x + 8)² - 3(-x + 8) = 2

        = x² - 16x + 64 + 3x - 24 + 2

        = x² - 13x + 42

(gof)(-8) = (-8)² - 13(-8) + 42

             = 64 + 104 + 42

             = 210

5 0
2 years ago
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