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snow_lady [41]
3 years ago
5

WWWNHINIHIN

Mathematics
1 answer:
Furkat [3]3 years ago
6 0

Answer:

120 people [see below]

Step-by-step explanation:

48 out of 120 people like baseball.

That is about  48/120 = 0.4 [40%]

Now, 3/5th of THOSE, play baseball, so

0.4 * 3/5 = 0.4 * 0.6 = 0.24 [24%].

Thus, we have seen that around 24% of total people taken would play baseball.

Now, we take 500 people, so 24% of them would be expected to play baseball.

That is 0.24 * 500 = 120 people

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What is the slip of the line shown in the graph A) -2 B) -1 C) 1/-2 or D) 1/2
Serjik [45]

Answer:

m = -1/2

Step-by-step explanation:

m=\frac{rise}{run}=\frac{1-2}{0+2}=\frac{-1}{2}=\boxed{-\frac{1}{2}}

Hope this helps.

6 0
3 years ago
Evaluate the surface integral. ??s (x2 y2 z2 ds s is the part of the cylinder x2 y2 = 4 that lies between the planes z = 0 and z
kondor19780726 [428]
The surface S can be parameterized by

\mathbf r(\theta,z)=(2\cos\theta,2\sin\theta,z)

where 0\le\theta\le2\pi and 0\le z\le2. Then the surface integral can be computed with

\displaystyle\iint_S(x^2+y^2+z^2)\,\mathrm dS
\displaystyle=\int_{\theta=0}^{\theta=2\pi}\int_{z=0}^{z=2}(4\cos^2\theta+4\sin^2\theta+z^2)\|\mathbf r_\theta\times\mathbf r_z\|\,\mathrm dz\,\mathrm d\theta=\dfrac{128\pi}3
6 0
3 years ago
What is the answer?​
hammer [34]

Answer:

x = 27

Step-by-step explanation:

Angle A and angle E are the same value, therefore you could replace angle E with angle A. So that would make a triangle with angle C, angle D, and angle A. Knowing the sum of all angles in a triangle is 180, we can make an equation representing this.

3x - 10  + 2x + 10 + 45 = 180

Now simply silve the equation to find x.

5x + 45 = 180 \\ 5x = 135 \\ x = 27

There is your answer.

8 0
2 years ago
Classify the equation 64x - 16 = 16(4x - 1) as
Maksim231197 [3]

Answer:

there is no solution 64x-16=64x-16

Step-by-step explanation:

if you distrubute then you will see the numbers are the same on both sides

7 0
3 years ago
Read 2 more answers
In a random sample of 1066 U.S. adults, 580 think that the U.S. government
alexandr402 [8]

Answer:

Step-by-step explanation:

This is a test of 2 population proportions. Let 1 and 2 be the subscript for the adults who think that the U.S. government is doing too little to protect the environment presently and the adults who think that the U.S. government is doing too little to protect the environment 10 years ago. The population proportions would be p1 and p2 respectively.

p1 - p2 = difference in the proportion of adults who think that the U.S. government is doing too little to protect the environment presently and the adults who think that the U.S. government is doing too little to protect the environment 10 years ago.

The null hypothesis is

H0 : p1 = p2

p1 - p2 = 0

The alternative hypothesis is

Ha : p1 ≠ p2

p1 - p2 ≠ 0

it is a two tailed test

Sample proportion = x/n

Where

x represents number of success

n represents number of samples

For the present,

x1 = 580

n1 = 1066

p1 = 580/1066 = 0.54

For 10 years ago,

x2 = 514

n2 = 1038

P2 = 514/1038 = 0.5

The pooled proportion, pc is

pc = (x1 + x2)/(n1 + n2)

pc = (580 + 514)/(1066 + 1038) = 0.52

1 - pc = 1 - 0.52 = 0.48

z = (p1 - p2)/√pc(1 - pc)(1/n1 + 1/n2)

z = (0.54 - 0.5)/√(0.52)(0.48)(1/1066 + 1/1038) = 0.04/0.02178551744

z = 1.84

Since it is a two tailed test, the curve is symmetrical. We will look at the area in both tails. Since it is showing in one tail only, we would double the area

From the normal distribution table, the area above the test z score in the right tail 1 - 0.967 = 0.033

We would double this area to include the area in the left tail of z = - 1.84 Thus

p = 0.033 × 2 = 0.066

Alpha = 0.1

Since alpha, 0.1 > p value 0.066, we would reject the null hypothesis.

Therefore, at a = 0.10, we can reject the

claim that the proportion of U.S. adults who think that the U.S. government

is doing too little to protect the environment has not changed.

4 0
3 years ago
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