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2 years ago

Look at the photo for an Easy question and get easy points

Mathematics

2 answers:

earnstyle [38]2 years ago

8 0

Answer:

the answer is 90

Step-by-step explanation:

Hope I helped!

worty [1.4K]2 years ago

6 0

Answer:

Step-by-step explanation:

why my answer has to be 20 characters long? :)

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What is the factored form of the expression? 4x^2-81y^2

Tasya [4]

$4x^2-81y^2$

$(2x)^2-(9y)^2
$

$(2x+9y)(2x-9y)$

4 0

3 years ago

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Point M is the midpoint of JK find JK when JM = 6x - 7 MK = 2x + 3

eimsori [14]

Answer:

JK= 8x-4

Step-by-step explanation:

This is achieved by adding JM And MK because M is the midpoint of JK.

7 0

3 years ago

If parallelogram JKLM is rotated 270° counterclockwise around the origin, what are the coordinates of the endpoints of the side

allochka39001 [22]

No graph, so cannot be precise.
But you can apply rotation 270 CCW = rotation -90 CCW

r_[90] : (x,y) -> (y,-x)

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2 years ago

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Beginning one month after birth of their son, Noah, the Nelsons deposited $100 each month in an annuity for his college fund. Th

gizmo_the_mogwai [7]

Answer:

$100 * (1 + 6.8%/12)^216 + $100*(1+6.8%/12)^215 + ... + $100*(1+6.8%/12)^1

Now note that

x + x^2 + x^3 + ... + x^N = x ( 1 + x + ... + x^(N-1) )

= x ( (x^N -1)/(x-1) )

Here, x = 1+6.8%1 = 1.00566666 and N = 216, so

$100 * ( 1.00566666 ( 1.00566666^216 -1) / 0.00566666 )

= $ 42398.33

The total interest earned is $42,398 - $21,600 = $20,798

Step-by-step explanation:

The generic formula used in this compound interest calculator is V = P(1+r/n)^(nt)

V = the future value of the investment

P = the principal investment amount

r = the annual interest rate

n = the number of times that interest is compounded per year

t = the number of years the money is invested for

8 0

3 years ago

how many different combinations of six people can sit in four chairs? assume one person sits in each chair

Tems11 [23]

We want to choose 4 people and we have 6 people to choose from. This is a combination of 6, 4 by 4. Also called <em>six choose four</em>.

The following formula:

$_rC_n=\frac{n!}{r!(n-r)!}$

Is the combination of $r$ objects choosen from a total of $n$ . It's $n$ choose $r$ .

For our problem, we just need to compute the following:

$_4C_6=\frac{6!}{4!(6-4)!}=\frac{6\times5\times4!}{4!2!} =\frac{6\times5}{2\times1} =15$

Thus

$\boxed{_4C_6=15}$

Therefore the answer is 15 different combinations

5 0

2 years ago