The sum of eight times a number and fifteen is seven

Answers

Answer 1

Answer: 8x+15=7
8x=7-15
8x=-8
x=-8/8
x=-1

Answer 2

Answer: The answer is (8•x)15=7

Related Questions

Identify and equation in point slope form for the line perpendicular to y= -3x+7 that passes through 2,-4
Please find the slope and y-intercept for each of the following graphs(photo above) . Please help I don't understand this :-\
Write a fact with the same sum of 7 + 5
Which number has a 3 with a value of the 3 in 3.01
Select all the numbers that are rational.A 0.45623… B √50 C 0.325 D 13 E –142

Plllzzz urgent urgent!!!!! 2 to 10 plzzz

Answers

53 yes no 68 96 54 38 68 45 49

To find the mean of a data set all you need to do is add up the numbers in the data set and divide by the number of numbers in the data set. So if the data set is (2,4,6,8,10,12) then you would do 2+4+6+8+10+12=42, then divide by the amount of numbers in that set, in this case the number is 6. So divide 42 by 6 and you get 7, so the mean equals 7.

In your case they try to make it more difficult by excluding certain numbers, what you have to do is make sure you keep track of the numbers you exclude.

1.) Find the mean of the data set excluding numbers ending with 0 between 1-20.
Those numbers are: 1, 2,3,4,5,6,7,8,9,11,12,13,14,15,16,17,18,19.
Remember that you left out 2 numbers, 10 and 20.
Add you data set together to get 180. Now you need to divide 180 by the amount of numbers, remember there are 2 less numbers than 20 so that is 18, 180 divided by 18 is 10.

2.) You will do the same thing for every problem, I will walk you through this one and do a few more but the rest is up to you. This question asks you to: find the mean of the data set excluding numbers with the last digit 2 between 1-10. List all of the numbers not ending in 2 between 1-10: 1,3,4,5,6,7,8,9,10. Add all of those numbers together: 53. Divide 53 by the amount of numbers in the data set, in this case, 9. 53 divided by 9 is 5.888888888888889 or 5.89.

3.) This question asks you: find the mean of the data set excluding numbers with last digit 5 between 1-20. In this case you will be excluding 5 and 15, that is 2 numbers. Add up: 1,2,3,4,6,7,8,9,10,11,12,13,14,16,17,18,19,20. You will get: 190, divide that by 18 to get: 10.55555555555556 or 10.56.

4.) This question asks you: find the mean of the data set using numbers between 1-20. So add up: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20. You will get: 210. Divide 210 by the total number of numbers which is 20, the answer is: 10.5.

5.) This question asks you: find the mean of the data set excluding numbers ending with the last digit 1 between 1-10. So add up the numbers between 1 and 10, excluding 1 and 10: 2,3,4,5,6,7,8,9 to get: 44. since you took out 2 numbers divide by 8, 44 divided by 8 is 5.5.

I hope this helped, if you need any further help, just ask. :)

Determine the length of arc JL.A)
25
9
π
B)
5
13
π
C)
25
18
π
D)
14
17
π

Answers

The length of arc JL is $(25)/(18) \pi$ So option c is correct.

Solution:

Given, from the diagram, radius of the given circle is 2 units.

And, the angle between the radius JK and KL is 125 degrees.

We have to find the length of the minor arc formed by JL

The length of arc is given as:

$\text { Length of arc }=2 \pi r\left((\theta)/(360)\right)$

where $\theta$ is angle between radii formed by points with centre

Now the length of arc JL is:

$=2 \pi * 2 * (125)/(360)=4 \pi * (125)/(360)=\pi * (125)/(90)=(25)/(18) \pi$

Hence, the length of are JL is $(25)/(18) \pi$ so option c is correct.

The mass of a moon rock is 3.5 kilograms.what is the mass of the moon rock in grams

Answers

it is 3500 grams
hope i helped

3.5 grams = 3500 kilograms

What does 1.8e10 mean

Answers

For this case we have an expression of the form:
$a * e (b)$
We can rewrite this expression in scientific notation as:
$a * 10 ^ b$
Where,
a: coefficient of scientific notation
b: base ten exponent
We then have the following expression:
$1.8e10$
Rewriting we have:
$1.8 * 10 ^ {10}$
Answer:
$1.8e10 = 1.8 * 10 ^ {10}$

it means 1.8 × 10 to the tenth power. the E is a ten are you working with scientific notation

29849 (3 sig. Fig )

Answers

3 sig fig means 3 significant figures. This means that only the first 3 digits in a number are above 0.
The first 3 digits in 29849 are 298 and, because 4 is less than 5, the 8 is not round up, and remains the same. The 4 and the 9, however, become 0.

The answer is 29800

Answer:

29800

Step-by-step explanation:

your welcome :)

The one cost DVD is 16.98, and the cost of another DVD is 9.29. Ed estimated the cost of the two DVD to be about 27. Is his estimate higher or lower than the actual cost? Explain

Answers

Answer:

Higher

Step-by-step explanation:

16.98 + 9.29 = 26.27 < 27.00

26.27 is rounded to 26.10 or 26.00 so Ed's estimate is higher

Hope this helps

Answer:

another DVD is $9.29. Ed estimated the cost of the two DVDs to be about $27. Is his estimate higher or lower than the actual cost? your answer is 21.

Step-by-step explanation:

brainliest please

Other Questions

1) the entrance way to the presidio is a rectangle topped by a half circle arch that is 3.2m wide. If the ratio of the area of the rectangle to the area of the arch is approximately 3:1, what it the height of the rectangular entranceway?

How do you divide 33 by 50

Find the x- and y- intercept of the line -3x+9y=18

A species of dolphins is decreasing at a rate of 3.1% per year.if there are currently 20000 dolphins , many will there be in 30 years