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3 years ago

What is the axis of symmetry for the function f(x)=7-4x+x2? X=-3 x = -2 x = 2 x= 3

Mathematics

2 answers:

Vilka [71]3 years ago

6 0

Answer: it’s C.) X= 2

Step-by-step explanation:

jok3333 [9.3K]3 years ago

3 0

Answer:

x = 2

Step-by-step explanation:

C on edg 2020

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A cylinder has diameter of 4ft and a height of 9ft. Explain whether halving the diameter has the same effect on the surface area

elena55 [62]

Answer:

See Below

Step-by-step explanation:

The surface area of cylinder is given by the formula:

$SA=2\pi r^2 + 2\pi r h$

Where

r is radius ( diameter is 4, so radius is 4/2 = 2)

h is height ( h = 9)

Lets find original surface are:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (9)\\SA=8\pi +36\pi\\SA=44\pi$

<u>Halving diameter:</u>

diameter would be 4/2 = 2, so radius would be 2/2 = 1

So, SA would be:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (1)^2 + 2\pi (1) (9)\\SA=2\pi +18\pi\\SA=20\pi$

<u>Halving height:</u>

Height is 9, halving would make it 9/2 = 4.5

Now, calculating new SA:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (4.5)\\SA=8\pi + 18\pi\\SA= 26\pi$

Original SA is $44\pi$ ,

Halving diameter makes it $20\pi$

Halving height makes it $26\pi$

So, halving diameter does not have same effect as halving height.

5 0

3 years ago

What is the Largest prime factor of 2²+3²+5² ?

uranmaximum [27]

It looks like 19 would be.

I don't know any slick way to find it, other than just slugging it out.

4 0

3 years ago

Read 2 more answers

Ayudaaaa por fis o si no me matan jsjs

Dmitrij [34]

Answer:

28 72 85 b

Step-by-step explanation:

8 0

3 years ago

Convert 500 cubic feet to liters then to gallons

V125BC [204]

Answer:

500 cubic feet equals 14158.4 liters or 3740.25 gallons.

Step-by-step explanation:

We are asked to convert 500 cubic feet to liters then to gallons.

We know that one cubic feet equals 28.3168 liters.

$\text{500 cubic feet to liters}=\text{500 cubic feet}\times \frac{\text{28.3168 liters}}{\text{cubic feet}}$

$\text{500 cubic feet to liters}=500\times \text{28.3168 liters}$

$\text{500 cubic feet to liters}=\text{14158.4 liters}$

We know one liter equals 0.264172 gallons.

$\text{14158.4 liters to gallons}=\text{14158.4 liters}\times\frac{0.264172\text{ gallons}}{\text{liter}}$

$\text{14158.4 liters to gallons}=14158.4 \times 0.264172\text{ gallons}$

$\text{14158.4 liters to gallons}=3740.2528448\text{ gallons}$

$\text{14158.4 liters to gallons}\approx 3740.25\text{ gallons}$

Therefore, 500 cubic feet equals 14158.4 liters or 3740.25 gallons.

5 0

3 years ago

On Saturday, 3 child tickets were sold for every 2 adult tickets sold What is the ratio of child tickets sold to adult ticket so

melomori [17]

Itssssssss 3:2 or 1.5:1

8 0

3 years ago