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Komok [63]
3 years ago
6

Is this 1/3 7/21 a proportion

Mathematics
2 answers:
Brut [27]3 years ago
3 0
Yes they are proportionate
Yanka [14]3 years ago
3 0

Answer:

Yes it is !

Step-by-step explanation:

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Michael pays his cell phone service provider $49.95 per month for 500 minutes. Any additional minutes used cost $0.15 each. In J
arsen [322]

y = total cost used.

x = additional minutes

y = $49.95 + $0.15x

$61.20 = $49.95 + $0.15x. Subtract the $49.95 from each side.

$11.25 = $0.15x. Divide each side by $0.15

75 = x.

Michael used 75 additional minutes.

8 0
3 years ago
One year ago, Joan was five times as old as her pony. In one year's time, the sum of the ages will be 22. How old is Joan now?​
iogann1982 [59]

Answer:

22 divided 5 I would think

Step-by-step explanation:

4 0
2 years ago
Cada uno de los 28 estudiantes en la clase de Romi recaudó al menos $ 25 durante el jump-a-thon. ¿Cuál es la menor cantidad de d
Crank

Answer:

$700.00 porque si cada uno recaudo por lo menos $25.00 entonces multiplicas 28 por los estudiantes y $25.00 por la cantidad menos recaudada equivalente a $700.00

Step-by-step explanation:


7 0
3 years ago
Can you answer this question ?
Elden [556K]

Answer:

k = -14

Step-by-step explanation:

We should cross-multiply

9/(k -  7)  =  6 / k

9*k  = 6 * (k - 7)

9k = 6k  - 42

9k - 6k = -42

3k = -42

k = -14

7 0
3 years ago
Let f(x) = 2x, g(x) = x2 + 2, and h(x) = -4x + 3. Find the composite function.
Margarita [4]
(g\circ f)(x)=g(f(x))\\\\
(g\circ f)(x)=(2x)^2+2=4x^2+2 \Rightarrow B
3 0
3 years ago
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