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3 years ago

THIS IS UGERNT PLEASE HELP ME! ITS A TEST AND ITS DUE TODAY!

Mathematics

2 answers:

astra-53 [7]3 years ago

6 0

Answer:

(2) 40

Step-by-step explanation:

15% of 40 = 6

Please give me BRAINLIEST and THANKS lol <(￣︶￣)>

Alexeev081 [22]3 years ago

4 0

Answer:

The answer is 40

Step-by-step explanation:

15% of 40, is 6, thus giving your answer.

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If the tire is flat, then I will have to change it. Using the statement above, first state your variables in terms of p and q an

pishuonlain [190]

Let
p="The tire is flat"
q="I will have to change it"

The statement in symbolic form is
p->q means if p is true, then q, or
"If the tire is flat, then I will have to change it."

6 0

4 years ago

When 8 is added to 3times a certain number, the result is the same as adding 12 to twice the number. find the number

White raven [17]

Answer:

The number is 4

Step-by-step explanation:

Choose a variable for the number.

let the number be "x"

Make an equation with the information from the problem. Break down each part of the problem and change it to the algebraic form (numbers and symbols).

"When 8 is added to" 8 +

"3 times a certain number" 3x

"the result is the same as" =

"adding 12 to" 12 +

"twice the number" 2x

Put the equation back together with each of the parts.

8 + 3x = 12 + 2x

Now isolate "x" to the left side to find the number.

8 + 3x - 2x = 12 + 2x - 2x Subtract 2x from both sides

8 + x = 12 "x" is only on the left side

8 - 8 + x = 12 - 8 Subtract 8 from both sides

x = 4 Solved for the number

Therefore the number is 4.

5 0

3 years ago

In 1990, 23.8% of 18-24 year-olds in Biddeford, Maine were attending college. About 10 years later, a random sample of 610 18-24

Vlada [557]

Answer:

There is enough evidence to support the claim that the percentage of residents attending college in that age-group is greater than 23.8%

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 610

p = 23.8% = 0.238

Alpha, α = 0.01

Number of 18-24 year-old attending college , x = 178

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.238\\H_A: p > 0.238$

This is a one-tailed(right) test.

Formula:

$\hat{p} = \dfrac{x}{n} = \dfrac{178}{610} = 0.2918$

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

Putting the values, we get,

$z = \displaystyle\frac{0.2918-0.238}{\sqrt{\frac{0.238(1-0.238)}{610}}} = 3.1201$

Now, we calculate the p-value from the table.

P-value = 0.0009

Since the p-value is lower than the significance level, we fail to accept the null hypothesis and reject the null hypothesis.

Conclusion:

Thus there is enough evidence to support the claim that the percentage of residents attending college in that age-group is greater than 23.8%

4 0

4 years ago

Read 2 more answers

Arrange the functions in ascending order, starting with the function that eventually has th least value and ending with the func

WINSTONCH [101]

Answer:

$3x,3x+8,x^{2} ,x^{2}+6,4^{x} ,4^{x}+3,$

Step-by-step explanation:

We have to arrange the functions given in ascending order which have eventually the least value and eventually the greatest value.

So, we get the following table representing the values of the functions for different values of x.

x : 5 10 15

$y_{1} =3x+8$ : 23 38 53

$y_{2} =4^{x} +3$ : 1027 1048579 1073741827

$y_{3} =x^{2} +6$ : 31 106 231

$y_{4} =3x$ : 15 30 45

$y_{5} =4^{x}$ : 1024 1048576 1073741824

$y_{6} =x^{2}$ : 25 100 225

As, can be seen from the table that the ascending order of the functions is given by $y_{4},y_{1},y_{6},y_{3},y_{5},y_{2},$ .

Hence, the order is $3x,3x+8,x^{2} ,x^{2}+6,4^{x} ,4^{x}+3,$ .

3 0

3 years ago

Please help really desperate as it is due in a couple of hours.

Aleonysh [2.5K]

The answer is b, fine the initial speed of the ball

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3 years ago