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Vadim26 [7]
2 years ago
15

The graph of a quadratic function is given below. What is the domain and range? *​

Mathematics
1 answer:
Mashutka [201]2 years ago
7 0

Answer:

D

Step-by-step explanation:

There are no excluded values of x in the domain of the function.

Thus domain is - ∞ < x < ∞

The range covers the permissible values of y

These are from (- 1, 16 ) downwards to - ∞

Thus range is y ≤ 16

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Step-by-step explanation:

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Jacob and Isaiah are brothers. Their combined ages are 63. Jacob is 7 years older than Isaiah. How old are each of the boys?
SVETLANKA909090 [29]
There are two unknowns in this problem. To start, let's assign variables to each of them. Let x be the age of Jacob and y be the age of Isaiah. Then, we formulate equations based on the relationships stated.

x = 7 + y   --> eqn 1
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Substituting eqn 1 to eqn 2, then solve for x and y:

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Therefore, Jacob is 35 years old, and Isaiah is 28 years old.
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