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3 years ago

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a dvd player remote control costs 266 a college student has 813 in her savings account how much will she have left in her saving

s accounts after she buys the dvd player

1 answer:

defon3 years ago

5 0

Answer:

547

Step-by-step explanation:

Just subtract 813 - 266.

pls mark me as brainiest

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Sergeeva-Olga [200]

Answer:

y = 8x + 25

Step-by-step explanation:

Using the coordinates (10, 105) and (20, 185)

The standard linear equation is expressed as y = mx+c

m is the slope

c is the intercept

m = 185 - 105/20-10

m = 80/10

m = 8

Get the y-intercept

Since y = mx+c

105 = 8(10) + c

105 = 80 + c

c = 105 - 80

c = 25

Get the required equation

Recall that y = mx+c

y = 8x + 25

Hence the required equation is y = 8x + 25

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3 years ago

If 2+3=10, 7 + 2 = 63, 6 + 5 = 66 and 8+4 = 96 then what is 9 + 7?

tia_tia [17]

Answer: 16

Step-by-step explanation:

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2 years ago

What the slope of 3,4 7,-4

Trava [24]

Answer: The slope is -2

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3 years ago

a package of 8 rechargeable batteries cost 12. at the rate how much would 20 rechargeable batteries would cost

Anettt [7]

Step-by-step explanation:

8 battery =12

20 battery =?(x)

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3 years ago

Prove that an = 4^n + 2(-1)^nis the solution to

olga nikolaevna [1]

Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute $a_n=4^n+2(-1)^n$ in the equation $a_n=3a_{n-1}+4a_{n-2}$ the equality is true.

Let's substitute first in the right hand side:

$3a_{n-1}+4a_{n-2}=3(4^{n-1}+2(-1)^{n-1})+4(4^{n-2}+2(-1)^{n-2})$

Now we use the distributive laws. Also, note that $(-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n}$ (this also works when the power is n-2).

$=3(4^{n-1})+6(-1)^{n-1}+4(4^{n-2})+8(-1)^{n-2}$

$=3(4^{n-1})+(-1)(6)(-1)^{n}+4^{n-1}+(-1)^2(8)(-1)^{n}$

$=4(4^{n-1})-6(-1)^{n}+8(-1)^{n}=4^n+2(-1)^n=a_n$

then the sequence solves the recurrence relation.

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3 years ago