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4 years ago

HELP?!! I don't understand this question!!

Mathematics

1 answer:

ycow [4]4 years ago

7 0

To find out the amount of time, think of the amount of time as objects and then take this number and divide by the total number of minutes added up.

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Determine the initial value

Ghella [55]

Hey there I am just telling you , it seems that your questions is incomplete . Can you kindly post the whole question then I am able to solve it.

please don't mind.

6 0

3 years ago

Plz help me i need the answer to this i dont get it

quester [9]

Answer:

A: (2,-4) B: (2,-1) C: (5,-1) D: (5,-2)

Reflected over x-axis:

A: (2,4) B: (2,1) C: (5,1) D: (5,2)

2 units right one unit down

A: (4,-5)

dilated by 3

rotated 180 about the origin-

(-4,5)

Step-by-step explanation:

Your finding the transformations for only A

7 0

3 years ago

Read 2 more answers

I need help with this

jeka94

Answer:

a15 = 50

t25 = 33554427

Step-by-step explanation:

<em>Insert/Substitute the number given in for n.</em>

a15 = 3(15) + 5

a15 = 45 + 5

a15 = 50

t25 = 2^25 - 5 <em>2 times itself 25 times. 25 is the exponent in this equation</em>

t25 = 33554432 - 5

t25 = 33554427

8 0

3 years ago

How do the signs of factors affect their products

evablogger [386]

Answer:

If a negative number is multiplied with a positive number, it will be negative. If two positive numbers are multiplied, it will be positive. If two negative numbers are multiplied, it will also be positive.

Step-by-step explanation:

3 0

4 years ago

50 random teenagers were asked how many hours a day they use their phone. They spent an average of 7 hours a day with a standard

tatyana61 [14]

Answer:

The margin of error for the true mean number of hours a teenager spends on their phone is of 0.4 hours a day.

Step-by-step explanation:

We have the standard deviation of the saple, so we use the t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 50 - 1 = 49

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 49 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 2\frac{1.3}{\sqrt{50}} = 0.4$

In which s is the standard deviation of the sample and n is the size of the sample.

The margin of error for the true mean number of hours a teenager spends on their phone is of 0.4 hours a day.

4 0

3 years ago