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Anni [7]
3 years ago
13

Please select the best answer from the choices provided

Mathematics
2 answers:
mamaluj [8]3 years ago
7 0

Answer:

D. y= 555.5

Step-by-step explanation:

We are given,

The quadratic regression equation is y=0.008x^2+0.518x+131.886

It is required to predict the y-value, when the x-value is 200.

Substituting x= 200, we get,

y=0.008x^2+0.518x+131.886\\\\y=0.008\times 200^2+0.518\times 200+131.886\\\\y=0.008\times 40000+0.518\times 200+131.886\\\\y=320+103.6+131.886\\\\y=555.5

<h3>Thus, the predicted y-value is 555.5 when x= 200.</h3>

So, option D is correct.

Rama09 [41]3 years ago
5 0
The answer would be D: y=555.5, because y for x=175 is 470.4, and y goes up with the x.
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The drawing is composed of a rectangle and a semicircle. Find the area of the figure to the nearest unit. Please explain, thank
DanielleElmas [232]
We know that
[area of the figure]=[area of rectangle]+[area of semi circle]

area of rectangle=b*h------> 10*18-----> 180 cm²

area of semicircle=pi*r²/2
diameter=18 cm
radius=18/2----> 9 cm
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[area of the figure]=[180]+[127.17]------> 307.17 cm²
round <span>to the nearest unit </span>------> 307 cm²

the answer is
the area of the figure is 307 cm²
3 0
3 years ago
John had 84 dollars, and his brother Fred owed 12 dollars to his friend. John gave his brother some money. Fred paid his debt an
Alja [10]

Answer:

John have $36 and he should give $48 to his brother for both to have equal money.

Step-by-step explanation:

Given that,

amount of money John have = $84

amount of money John's brother owed to her friend = $12

$12 of the $84 is going to his brother's friend, that leaves $72 for John and his brother.

If they are to finish with the same amount, then each should have half of the John's money after he paid $12

So,

72/2

= 36 each

but since John's brother have to give 12 rupees in debt so

36+12

= $48

So John should have $36 and he should give $48 to his brother.

4 0
3 years ago
Y=f(x)=(4)^x find f(x) when x=-1
nexus9112 [7]

when x = -14

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Answer

1/4 or 0.25

4 0
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2.500.000 is the answer but I think simplifying it would make it 2.5?
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