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kap26 [50]
4 years ago
7

-0.2x^2+0.9x+0.6=yWhat's the vertex form for this equation?​

Mathematics
1 answer:
hjlf4 years ago
6 0

Answer:   y = -0.2(x - 2.25)² + 1.6125

<u>Step-by-step explanation:</u>

y = -0.2x^2 + 0.9x + 0.6\\\\y - 0.6 = -0.2x^2 + 0.9x\\\\y - 0.6 =-0.2(x^2-4.5x)\\\\y-0.6+\underline{(-0.2)(2.25)^2}=-0.2(x^2-4.5x+\underline{2.25^2})\\\\y-0.6-1.0125=-0.2(x-2.25)^2\\\\y-1.6125=-0.2(x-2.25)^2\\\\y=-0.2(x-2.25)^2+1.6125

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'2aa4b' is a 5 digit number and when its divided by '36' it gives '11' as remainder. What is the sum of the values 'a' can have.
OverLord2011 [107]

The only 5-digit numbers that do the job are  21,143  and  28,847 .

So, either 
a = 1  and
b = 3

or
a = 8  and
b = 7 .

The sum of the values that 'a' can have is (1 + 7) = <em>8</em> .

I shall cherish every one of your generous 5 points.


7 0
3 years ago
A Car Salesman sold $450000.00 in cars for the month of July.
Lesechka [4]

Answer:

$28,500

Step-by-step explanation:

$6,000 + 5% of $450,000 =

= $6,000 + 0.05 * $450,000

= $6,000 + $22,500

= $28,500

4 0
3 years ago
Read 2 more answers
using the pythagorean theorem, find the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse i
8_murik_8 [283]
Phthagorean theorme is
a^2+b^2=c^2
where you have a right triangle and c =hypotonuse( normally the longest side, and opposite of right angle)
a and b are the legs

so we are given
one leg=8
hypotonues=10
subsitute
leg=a or b so just subsitute for one
subsitutt  for b
a^2+8^2=10^2
expand
8^2=64
10^2=100
a^2+64=100
subtract 64 from both sides
a^2=36
square root both sides
a=6
answe ris 6 feet
8 0
3 years ago
2.8y + 6 + 0.2y = 5y -15
Olegator [25]
Simplify 2.8y + 6 + 0.2y to 3y + 6

subtract 3y from both sides

simplify 5y - 15 - 3y to 2y - 15

add 15 to both sides

simplify 6 + 15 to 21

divide both sides by 2

switch sides

Answer: y = 21/2

*in decimal form this would be 10.5
6 0
4 years ago
Very simple math problem (in picture
SIZIF [17.4K]
The person above me is right
3 0
3 years ago
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