All categories

3 years ago

Can some help me please!? I don't understand how to do it! (15PTS)

Mathematics

1 answer:

kirill [66]3 years ago

6 0

A) Quadratic variation. This is because the equation is in the form y = kx^2 with k = 1/8.

B) Inverse variation. Recall that inverse variation is in the form y = k/x which we can solve to xy = k. Here we have k = 9.

C) Direct linear variation. This equation is in the form y = kx, which is also known a direct proportional relationship because k = y/x. In this case, k = 1/11.

You might be interested in

Ami needs to divide these base-ten blocks into 5 equal groups.

Amanda [17]

Step-by-step explanation:

The model will contain 1 ten and 4 ones in each group.

5 0

3 years ago

A random sample of 64 bags of white cheddar popcorn weighed, on average, 5.23 ounces with a standard deviation of 0.24 ounce.

emmasim [6.3K]

Answer:

We conclude that cheddar popcorn weighed less than 5.5 ounces.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ =5.5 ounces

Sample mean, $\bar{x}$ = 5.23 ounces

Sample size, n = 64

Alpha, α = 0.05

Sample standard deviation, σ = 0.24 ounce.

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 5.5\text{ ounces}\\H_A: \mu < 5.5\text{ ounces}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{5.23 - 5.5}{\frac{0.24}{\sqrt{64}} } = -9$

Now, $z_{critical} \text{ at 0.05 level of significance } =-1.645$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that cheddar popcorn weighed less than 5.5 ounces.

3 0

4 years ago

What’s the area? Please help

Nana76 [90]

Answer:

24.5

Step-by-step explanation:

3 0

3 years ago

PLEASE PLEASE HELP!! A Tigers maximum speed is 70 mph, how many miles can the cheetah run per minute

Drupady [299]

1.2 minutes per hours is the correct answer

6 0

3 years ago

Read 2 more answers

Find the center and radius of the circle.<br> (x + 3)2 + (y + 4)2 =9

Tpy6a [65]

The general equation for any circle with its center at point (a, b) is

(x - a)² + (y - b)² = (radius)²

So the circle in the question is centered at (-3, -4), and its radius is 3 .

7 0

4 years ago