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2 years ago

A TV's regular price is $349. It is on

Mathematics

2 answers:

Nata [24]2 years ago

4 0

Answer:

rounded is $207.66

Step-by-step explanation:

you start by doing 349(0.30) which would be 104.7

349-104.7=244.3

next you do 244.3(.15)=36.645

244.3-36.645= $207.655

MatroZZZ [7]2 years ago

3 0

First just do $349 times .70 to get 244.3 because .70 +.30 =1 so 100% of the price. Next take the 244.3 and multiply it by .85 and get 207.655 and round to $207.66.

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vampirchik [111]

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Step-by-step explanation:

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4 years ago

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Nataly_w [17]

Answer:

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8 0

4 years ago

HELP

Reptile [31]

Answer:

The time it takes for the cannonball to hit the ground is 6.49 seconds.

Step-by-step explanation:

You know that the height of the cannonball above the ground, h, in meters, in time, t, in seconds, is found by the function h(t) = -4.9t² + 30.5t + 8.4. You want to calculate the time it takes for the cannonball to hit the ground, that is, the time it takes for the bullet to reach zero height. So, being h(t) = 0 you have:

0 = -4.9t² + 30.5t + 8.4

To solve a quadratic function 0=a*x² + b*x +c, the expression is applied:

$\frac{-b+-\sqrt{b^{2} -4*a*c} }{2*a}$

In this case, being a = -4.9, b =30.5 and c =8.4 you have:

$\frac{-30.5+-\sqrt{30.5^{2} -4*(-4.9)*8.4} }{2*(-4.9)}$

Solving you get:

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Since time does not have a negative value, then <u><em>the time it takes for the cannonball to hit the ground is 6.49 seconds.</em></u>

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3 years ago

Matt is saving to buy a new motorcycle. If he deposits $70 at the end of each month in an account that pays an annual interest r

hodyreva [135]

Answer:

bro I don't know. I just need the points so I can keep getting answers. good luck tho I guess.

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3 years ago