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Vedmedyk [2.9K]
3 years ago
5

CAN SOMEONE PLEASE HELP WITH THIS

Mathematics
1 answer:
meriva3 years ago
8 0
Do you want us to answer the whole page??
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What is the vertex of y= -x^2+10x
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y = -x^2+10x\implies y = -x^2+10x+0 \\\\[-0.35em] ~\dotfill\\\\ \textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-1}x^2\stackrel{\stackrel{b}{\downarrow }}{+10}x\stackrel{\stackrel{c}{\downarrow }}{+0} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left(-\cfrac{ 10}{2(-1)}~~~~ ,~~~~ 0-\cfrac{ (10)^2}{4(-1)}\right)\implies \left( \cfrac{10}{2}~~,~~\cfrac{100}{4} \right)\implies (5~~,~~25)

7 0
2 years ago
Determine in which direction the parabola below opens. y = 8x2 - 3x - 9
mariarad [96]
The parabola opens upward. because 8x^2 is positive
8 0
3 years ago
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Which choice is equivalent to the expression below?
kolezko [41]
5x\sqrt2-2\sqrt2+2x\sqrt2=7x\sqrt2-2\sqrt2\\\\Answer:A.
6 0
4 years ago
— 3х – 2y = 16<br> х+ 9y = 28
Alla [95]

Answer:

x=-8

y=4

Step-by-step explanation:

first you multiply this equation (-3x-2y=16) with negativ it will be like this 3x+2y=-16

3x+2y=-16

(x+9y=28)3 _multiply with 3

3x+2y=-16

3x+27y=84

use minus(-) =3x-3x=0

=2y-27y=-25y

=-16-84=-100

the result:-25y=-100

y=4

take any simple equation and replace y with 4

x+9y=28

x+9(4)=28

x+36=28

x=28-36

x=-8

answer:x=-8,y=4

5 0
3 years ago
mary. needs to oder pizza for 18 students. Each student should get1/4 of pizza.How many pizzas should mary order? How much pizza
Nuetrik [128]
1 pizza for 4 students so 18 divided by 4 is 4.5 so 5 pizzas and there will be 1/2 a pizza left
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3 years ago
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