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Tanya [424]
2 years ago
6

Which function is equivalent to y = 3(x + 2)2 + 7 ?

Mathematics
2 answers:
RSB [31]2 years ago
6 0

Answer:

y equals 3xexponent plus 19

stepladder [879]2 years ago
4 0

Answer:

Step-by-step explanation:

Assuming the "2" after the "(x+2) is a square, the answer would be 3x^2+13x+19.

(x+2)^2=x^2+4x+4\\3(x^2+4x+4)=3x^2+12x+12\\3x^2+12x+12+7=3x^2+12x+19

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When a number is increased by 2.8%, the result is 56. What is the original number to
Sever21 [200]

Answer:

The original number was 54.5.

Step-by-step explanation:

If a number is increased by 2.8%, then it is 102.8% of it's original number.

In mathematics, "of" in virtually all cases means "multiplied by".

Therefore, we do the opposite:

1. Convert to a decimal.

102.8% = 1.028

2. Divide by the decimal.

56 \div 1.028 = 54.47

3. Round it to the nearest tenth.

54.47 rounds to 54.5.

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the assumption here being that both lines JH and FH are tangent lines to the circle, if that's the case the external angle of 34° is the angle made by the equal tangents, meaning the triangle is an isosceles with twin sides.

In an isosceles triangle the twin sides make also twin angles, so the angles at J and F are twins, and they'd be 180° - 34° = 146° total, since they're twins, each one takes half, or 73°.

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