3 years ago

Where is the vertex of the graph of y = -x^2+4x+5 located?

Mathematics

1 answer:

Natalija [7]3 years ago

5 0

Hello,

y=-x²+4x+5=-(x²-4x+4)+5+4=-(x-2)²+9

Answer A (2,9)

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PLEASE HELP!!

nasty-shy [4]

-5x+2y=6
2y=6+5x
y=5/2x + 6

x+3y=3
3y=3-x
y=-x/3+1

-2x+y=4
y=2x+4

4x+9y=-9
9y=-4x-9
y=-4/9x+1

Hope this helps.

6 0

4 years ago

Read 2 more answers

I have no clue how to do this. I just need to pass my online math class.

Lerok [7]

If F(3) then 3=x. So all you would do is substitute 3 in for x

3 0

3 years ago

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Write each expanded expression as a power.<br> 1.7 x 1.7 x 1.7 =

zhuklara [117]

Answer:

1.7^3

Step-by-step explanation:

i cannot see your answer options so I hope this helps!!!!

3 0

3 years ago

Find the percent of decrease if 110 is decreased to 88 A) 125% B)80% C)20%

stich3 [128]

Hey there! I'm happy to help!

We have 110 minus a certain percent of 110 equals 88. Let's call this percent p and solve.

110-110p=88

We subtract 110 from both sides.

-110p=-22

We divide both sides by 110.

p=0.2

Therefore, the percent decrease is C) 20%.

Have a wonderful day! :D

4 0

3 years ago

Read 2 more answers

Find the constant proportionality (r) using the value for r, enter an equation in the form of. C=rg that represents the relation

CaHeK987 [17]

Answer:

3.333

C = 3.3333g

Step-by-step explanation:

Given the relation : C = rg

C = Total cost of gasoline

g = Number of gallons of gasoline used

r = constant of proportionality

Picking any point on the graph :

At cost, c = $30

Number of gallons of gasoline used, g = 9

Putting the values into our equation :

C = rg

$30 = r * 9

30 = 9r

Divide both sides by 9

30/9 = 9r / 9

3.333 = r

Hence, constant of proportionality, r = 3.333

8 0

3 years ago