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KengaRu [80]
4 years ago
9

F(x)= -x^2+4x+5 what is the vertex

Mathematics
1 answer:
Pachacha [2.7K]4 years ago
6 0

Answer:

The answer to this is (0,9)

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Find the value of x. if necessary, round to the nearest tenth a=47sq in
kipiarov [429]

the picture in the attached figure


we know that

area of the triangle is equal to

A=(b*h)/2


in this problem

A=47 in²

b=x

h=x

so

47=x*x/2 \\  x^{2} =94 \\ x= \sqrt{94}  \\ x=9.69 in \\ x=9.7in

therefore

the answer is

x=9.7 in

3 0
4 years ago
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There were 24 students running in a race. How many different arrangements of the first, second, and third place are possible?
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Answer:9

Step-by-step explanation:

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3 years ago
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Please help fast and show your work
Wittaler [7]

Step-by-step explanation:

85-83=2

2/85×100

<h3>=2.3%</h3>
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3 years ago
A toal of 21,650 balls. It sold 11,795 baseballs. It sold 4,150 fewer basketballs than baseballs. The rest of the balls sold wer
Lunna [17]

Answer: 5705 Footballs

Step-by-step explanation: Just subtract 11,795 by 4,150 to get the missing variable.

4 0
3 years ago
What is the length of AC?<br><br><br> 3 ft<br><br> 4 ft<br><br> 9 ft<br><br> 18 ft
iragen [17]

Answer: The length of AC is 18 ft.

Step-by-step explanation:

By the given diagram,

AM = MB and CN = NB

M and N are the mid points of the sides AB and CB respectively,

Thus, by the mid point theorem,

MN ║ AC,

By the alternative interior angle theorem,

∠BMN ≅ ∠BAC

∠BNM ≅ ∠BCA

Thus, by AA similarity postulate,

ΔBMN ≅ ΔBAC

By the property of similar triangles,

\frac{BM}{BA}=\frac{MN}{AC}

\frac{BM}{BM+MA}=\frac{MN}{AC}

\frac{4}{4+4}=\frac{9}{AC}

\frac{4}{8}=\frac{9}{AC}

4AC=72\implies AC = 18\text{ ft}

Thus, The length of AC is 18 ft.

5 0
3 years ago
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