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2 years ago

Can You Guys Please Help???

Mathematics

1 answer:

Bezzdna [24]2 years ago

8 0

Answer:

Step-by-step explanation:

The answer is c.

Proportional means a relationship of y = a constant multiplied by x

In this case, the constant is 7.

i.e. y = 7x

So if

x is 3, y is 21

x is 5, y is 35

x is 7, y is 49

and so on...

And there you have it.

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Train A and train B leave the central station at the same time.They travel the same sped,but in opposite directions,with train A

Shtirlitz [24]

Train B reaches station B after 312 h

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2 years ago

Just before a referendum on a school budget, a local newspaper polls 402 voters to predict whether the budget will pass. Suppos

Sliva [168]

Answer:

21.21%

Step-by-step explanation:

Assume that proportion of support follows normal distribution.For resulting in defeat the proportion of support should less than 0.5.Given that the proportion of support is p= 0.52.

Sample size(n)= 402

We know that standard deviation is given as

$\sigma = \sqrt {\dfrac {p(1-p)}{n}}$

Now by putting the values

$\sigma = \sqrt {\dfrac{0.52\times 0.48}{402}}$

σ=0.0249

Proportion of support follows normal distribution with mean is 0.52 and standard deviation is 0.0249

We know that $Z=\dfrac{\bar{X}-\mu }{\sigma }$

$Z=\dfrac{0.5-0.52 }{0.0249}$

Z= -0.80

So P(Z<-.80) =0.2118 from standard table.

So the probability of news paper to predict defeat is 21.21%

7 0

2 years ago

Celery<br> celery<br> celery<br> celery<br> celery

ad-work [718]

Answer:

d, 3 5/8

Step-by-step explanation:

3 0

2 years ago

WILL MARK BRAINLIEST

Ivanshal [37]

Answer:

Step-by-step explanation:

First you need to find x.

It is shown that DE=EF, so we can use this.

5x-3=3x+7

5x=3x+10

2x=10

x=5

Then, you plug in the value of the variable and solve.

6(5)-3

30-3

27 = DF

8 0

2 years ago

Read 2 more answers

Identify the equivalent expression for each of the Expressions below x + 3 square root

aev [14]

Answer:

m8 its (3x)^1/2

Step-by-step explanation:

4 0

2 years ago