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2 years ago

9

Pls help i will give brainliest

1 answer:

Temka [501]2 years ago

7 0

Answer:

If you multiply by 2 then it would become -16 < 4 which is 2 times as much as the original.

If you multiply by -2 then it will become 16 < -4 which is not true.

Step-by-step explanation:

If you multiply by 2 then it would become -16 < 4 which is 2 times as much as the original.

If you multiply by -2 then it will become 16 < -4 which is not true.

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You deposit $2200 into three separate bank accounts that each pay 3% annual interest. How much interest does each account earn a

Keith_Richards [23]

This can be solve using the formula:
F = P ( 1 + i)^n
where F is the money after n years
P is the initial amount of money
i is the annual interest rate
n is the time in years
since you deposit in 3 accounts P = 2200/3
F = ( 2200 / 3) ( 1 + 0.03)^6
F = $ 875.64 is the money each account earned after 6 years

7 0

3 years ago

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 80 degrees at midnig

Vladimir [108]

Answer:

The equation is given by:

$D(t) = 80 + 9\sin{0.2618t}$

Step-by-step explanation:

Sine function:

Has the following format:

$y = A\sin{bx}$

In which A is the amplitude and $\frac{2\pi}{b}$ is the period.

Suppose you know the temperature is 80 degrees at midnight and the high and low temperature during the day are 89 and 71 degrees

This means that the amplitude of the sinusoidal variation function is 89 - 80 = 80 - 71 = 9. This means that $A = 9$

During a 24-hour day, which means that the period is 24. So

$\frac{2\pi}{b} = 24$

$24b = 2\pi$

$b = \frac{2\pi}{24}$

$b = 0.2618$

So the variation is:

$V(t) = 9\sin{0.2618t}$

Assuming t is the number of hours since midnight, find an equation for the temperature, D, in terms of t.

Initial temperature of 80, so:

$D(t) = 80 + V(t) = 80 + 9\sin{0.2618t}$

8 0

3 years ago

I need helping solving this

olchik [2.2K]

Answer: x= 5

Step-by-step explanation:

Plug the second equation into the first equation’s y.
3x-2(-2x+7)=21

Then use distribution

3x+4x-14=21

Add 4x and 3x

7x-14=21

Then add 14 to both sides

7x=35

Divide by 7 to get x

35/7=5

x=5

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2 years ago

Solve this. ! WORTH 52 POINTS.

Vsevolod [243]

Answer: Base angles theorem

Step-by-step explanation:

4 0

3 years ago

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Plz help! Answer at least one of these questions and i will give you brainly! It’s ok if you don’t know them all!

FinnZ [79.3K]

For number 3 it is 56 pints! i’ll do the other ones in a second

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3 years ago

Read 2 more answers