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2 years ago

I'm doing something wrong and I don't know what

Mathematics

1 answer:

never [62]2 years ago

6 0

Answer:

Step-by-step explanation:

It should be pi (1.5^2)3/3

or (3.14)(1.5^2)(1)

because 3 is the diameter and 1.5 is the radius and for cones you have to divide the height by 3

You might be interested in

Which does not show a direct variation between x and y?

Zepler [3.9K]

A direct variation is a mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other. In other words, a direct variation is where $y = x * (constant)$ .

In answer a, $y = x*.5$ , so it is a direct variation.
In answer c, $y = x* \frac{1}{9}$ , so it is a direct variation.
In answer d, $y = x*2$ , so it is a direct variation,

Only answer b is left, which means the answer must be 'b'.

We also know 'b' is the answer because it cannot be expressed as $y = x * (constant)$ . Instead, it is expressed as $y = \frac{constant}{x}$ , which is not the same thing and is therefore not a direct variation.

Hope I helped, and let me know if you have any questions :)

8 0

2 years ago

Read 2 more answers

Translations, rotations, and reflections are rigid transformations that preserve side lengths and angle measurements. Find and r

dolphi86 [110]

Answer: hmmm we might need more info my friend

Step-by-step explanation:

There is no series that i can see accept bad grammer

6 0

2 years ago

Tom and his best friend are going to join a gym. Tom saw that Platinum gym has a sale with a one time fee of $90 and a monthly f

worty [1.4K]

Answer:

Part 1:

For Platinum Gym:

90 + 30x

For Super Fit Gym:

200 + 20x

Part 2: $270

Part 3: $320

Part 4: 11 months

Part 5: See explanation below

Step-by-step explanation:

Part 1:

Let "x" be the number of months:

For Platinum Gym:

90 + 30x

For Super Fit Gym:

200 + 20x

Part 2:

We put x = 6 in platinum gym's equation and get our answer.

90 + 30x

90 + 30(6)

90 + 180

=$270

Part 3:

We put x = 6 into super fit's equation and get our answer.

200 + 20x

200 + 20(6)

200 + 120

=$320

Part 4:

To find the number of months for both gyms to cost same, we need to equate both equations and solve for x:

90 + 30x = 200 + 20x

10x = 110

x = 11

So 11 months

Part 5:

We know for 11 months, they will cost same. Let's check for 10 months and 12 months.

In 10 months:

Platinum = 90 + 30(10) = 390

Super Fit = 200 + 20(10) = 400

In 12 months:

Platinum = 90 + 30(12) = 450

Super Fit = 200 + 20(12) = 440

Thus, we can see that Platinum Gym is a better deal if you want to get membership for months less than 11 and Super Fit is a better deal if you want to get membership for months greater than 11.

4 0

2 years ago

Write an equation of the line with a slope of −3 and y-intercept of 0.

s2008m [1.1K]

Answer:

y = -3x

Step-by-step explanation:

Substitute the numbers into the point-slope form equation:

y - 0 = -3(x - 0)

y = -3x

5 0

2 years ago

What is the slope of the line that passes through the points (-20, 18) and (30, 14)?

Nikolay [14]

Answer:

$-\frac{2}{25}$

Step-by-step explanation:

slope is the change in y over the change in x.

change in y is 14-18= -4

change in x is 30-(-20)= 50

so the answer is -4/50

we can factor out 2 from both equations to simplify the fraction. this gives us -2/25

6 0

2 years ago