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# Questions posted in Mathematics

### What is the 100th term in the following sequence: 25, 36, 49, 64...

The sequence is given by (n+5)²
For n=100:
(100+5)² = 105² = 11025

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### What is the surface area of a pyramid that is 12 cm tall and has base edges of 8 cm and 6 cm?

12 * 6 = 96
12 * 8 = 72
6 * 8 =48
96+72+48= 216 cm2

Im pretty sure, not positive though. I haven't done surface area in a while/

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### A cylinder has a volume of 361.728 cubic centimeters. The diameter of the cylinder is 8 cm.What is the height of the cylinder?

The height i belive is 7.2

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### What is -8 in the following sequence: 25, 17, 9, 1, -7... A-common difference. B- common ratio. C-initial value. D- ratio. Why?

Hello :
-8 is  common ratio ( answer B) because m
-8 =(-7)-(1) =(1)-(9) =(9)-(17) =(17)-(25)

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### What is the solution set for the open sentence with the given replacement set 2x+7=19 {4,5,6,7}

Okay i am pretty sure the correct answer is 6x= according to the internet blame the internet is it is wrong          hope this helps!

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

I believe you answer is 65 and 25

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

Is it 0.2 repeating? I'm not sure sorry hon...

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### The sine of an angle in a right triangle is the ratio of the length of the side adjacent to that angle to the length of the hypotenuse

No, this is the definition of the cosine.

The sine in a right triangle is the OPPOSITE side divided by the hypotenuse

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### I don't understand how to do this

This is cross multiplying, so basically you're multiplying in a big X. So,

multiply (1/2) by 4, to get 2, and then multiply 3 by x, to get 3x.

You now have 2 = 3x, and we need to isolate the variable. To do that, we use the opposite operation the "x" is involved in. Here we have 3x (the x is multiplied to the 3) so we will divide 3x by 3. This cancels out the 3, leaving just "x".

What you do to one side of the = sign, you must do to the other, so we will also divde 2 by 3. This will give you 2/3 = x or, 0.67 = x (whichever form your answer must be in).

I know it can be confusing, so I including a picture working it out to help. Good luck!

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### What are these two factored?

16r^2 + 18r + 5

(2r + 1) (8r + 5)

ANSWERED AT 01/04/2020 - 01:43 PM

QUESTION POSTED AT 01/04/2020 - 01:43 PM

### If a necklace was marked up to 400% and was originally \$100 what was the original price

Well if the number is 100 dollars and it increases by four hundred percent it now costs 400 dollars. But if it was 100 dollars after the increase the original price was 25 dollars.

ANSWERED AT 01/04/2020 - 01:42 PM

QUESTION POSTED AT 01/04/2020 - 01:42 PM

The ratio for this table is 16 ounces: 1 pound. So that means if there are 4 pounds you multiply it my 16 considering there are 16 ounces in 1 pound. Yes, this sounds confusing but it is quite simple once you get the hang of it. So your answers are:
64
40
28
96

ANSWERED AT 01/04/2020 - 01:42 PM

QUESTION POSTED AT 01/04/2020 - 01:42 PM

### Solve -2x ≤ -4. Graph the solution

Https://us-static.z-dn.net/files/d2a/4dd214e6e402aa7e840049f27983c856.jpeg

ANSWERED AT 01/04/2020 - 01:42 PM

QUESTION POSTED AT 01/04/2020 - 01:42 PM

### Ishaan is 72 years old and William is 4 years old. How many years will it take until Ishaan is only 5 times as old as William?

72+x= 5(4+x) just solve for x

ANSWERED AT 01/04/2020 - 01:42 PM

QUESTION POSTED AT 01/04/2020 - 01:42 PM

### PLEASE HELP THE TEACHER IS OUT TO GET ME 10 fish are in a tank 2 drown 4 swim away 3 die how many fish are left in the tank?

10 fish are in the tank
1st fish can't drown
2nd they cant swim away they are in a tank
3rd they are dead but still in the tank
Hope that helps

ANSWERED AT 01/04/2020 - 01:42 PM

QUESTION POSTED AT 01/04/2020 - 01:42 PM

### A student is trying to solve the set of two equations given below: Equation A: x + z = 6 Equation B: 3x + 2z = 1 Which of the following is a possible step used in eliminating the z-term? Multiply equation A by −2. Multiply equation B by 2. Multiply equation A by 3. Multiply equation B by 3.

A is the answer helper to to it before me lol

ANSWERED AT 01/04/2020 - 01:41 PM

QUESTION POSTED AT 01/04/2020 - 01:41 PM

### The rain caused the river to rise a total of 6 2/3 inches.The river was rising at an average of 2/3 of an inch each hour.How many hours did it rain?

It rained 10 hours in total

ANSWERED AT 01/04/2020 - 01:41 PM

QUESTION POSTED AT 01/04/2020 - 01:41 PM

I can't see it. Send me another photo.

ANSWERED AT 01/04/2020 - 01:41 PM

QUESTION POSTED AT 01/04/2020 - 01:41 PM

### Round 704.213 to the nearest tens place.

ANSWERED AT 01/04/2020 - 01:41 PM

QUESTION POSTED AT 01/04/2020 - 01:41 PM

### A rancher’s herd of 250 sheep grazes over a 40-acre pasture. He would like to find out how many sheep are grazing on each acre of the pasture at any given time, so he has some images of the pasture taken by the state department of agriculture’s aerial photography division. Here are three samples of the images. Sample 1 4 Sample 2 1 Sample 3 9 What can the rancher conclude from these samples about how many sheep graze on each acre of the 40-acre pasture?

The rancher can conclude that his sheep are not proportionately spread out across the 40 acre pasture.

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

### T2 + 2t + 1 = 0 Solve using the quadratic formulaWrite your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.

T²+ 2t + 1 = 0

a=1, b=2 & c=1 The formula is x'=[-b+√(b²-4ac)]/(2a)

and====================>x"=[-b-√(b²-4ac)]/(2a)

x' = [-2+√(2²-4(1)] / 2(1) ===> x' = -2/2 ==> x' =-1 & x" = -1
x'=x"= -1

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

### Write the equation 2x-3y=6 in the slope-intercept form

Y= 2/3x-2

-3y= -2x+6
Divide by -3

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

### You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. What is the probability of the compound event? Write your answer as a fraction or percent rounded to the nearest tenth. The probability of choosing an odd number and then a 20 is .

3/42=1/14

Step-by-step explanation:

odd numbers: 3/7 even numbers: 1/6

3/7 x 1/6= 3/42 divided by 3= 1/14

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

### What is the radius of a circle when the diameter is 10

The radius of that circle would be 5

The diameter is two times the radius, and 2 times 5 equals 10, which is the same as 10 divided by 2 being equal to 5.

Hope this helps... mark as Brainliest plz

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

### Nine people share 6 cookies equally what fraction of a cookie does each person get?

To find the answer, divide the 6 cookies by the 9 people, and convert that into a fraction and that will give you the answer you need!

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

### There are 3x-2 trees planted in each row of a rectangular Parcel of land. If there are a total of 24x-16 trees planted and the parcel, how many rows of trees are there in the parcel?

If one raw contains 3x-2 trees & if the total trees in the rectangle are 24x-16, that means Horizontal Rows x Vertical Rows =Total number of trees:

(3x-2) * Vertical Rows = 24x-16 ===> Vertical Rows =(24x-16) / (3x-2)

Perform the division & you will find Vertical Rows =8

ANSWERED AT 01/04/2020 - 01:40 PM

QUESTION POSTED AT 01/04/2020 - 01:40 PM

It would be 5p

5x7 = 35

ANSWERED AT 01/04/2020 - 01:39 PM

QUESTION POSTED AT 01/04/2020 - 01:39 PM

### URGENT!!! HELP NOW PLEASE!!! 15 POINTS!!!

2*pi*4=
8pi/2 bc semicircle
4*3.14=
12.56

ANSWERED AT 01/04/2020 - 01:39 PM

QUESTION POSTED AT 01/04/2020 - 01:39 PM

### Find the area of a triangle when the base is 24 feet and one of the sides is 13 feet

The area of the triangle is 156ft.

ANSWERED AT 01/04/2020 - 01:39 PM

QUESTION POSTED AT 01/04/2020 - 01:39 PM

### The cost of \$500,000 worth of 30-year-term life insurance for Rico is \$66.60 per month. If Rico's employer covers 90% of this cost, how much is deducted from Rico's gross income per year for life insurance? A.\$59.94 B.\$79.92 C.799.20 D.719.28

\$79.92       is deducted from rico's gross income per year

ANSWERED AT 01/04/2020 - 01:39 PM

QUESTION POSTED AT 01/04/2020 - 01:39 PM