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zysi [14]
3 years ago
7

HELP ME PLEASE I'M CRYING! PLEASE!

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

1. 15*4= 60cm^2

2. 3.14*2*10.5 = 65.94‬= 66cm

3. r=C /2π      r=4cm

Step-by-step explanation:

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The sales tax rate for the state of Washington was 6.9%. What is the state sales tax on a $2,600 car in Washington?
pshichka [43]

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The answer would be $179.40

Step-by-step explanation:

all you have to do is take the price of the car and multiply it by .069 (6.9% in decimal form)

8 0
3 years ago
The population of a city increases by 5% every year. If it’s population today is 300,000 what will it’s population be in 2 years
disa [49]

Answer:

Population after n years = Present Population =(1+

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5

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=50000(

100

105

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6 0
2 years ago
If all 108 people take 2 biscuits, how many biscuits will you need?
grigory [225]

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216

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7 0
3 years ago
Read 2 more answers
Ashley deposits $500 into an account that earns 2% interest compounded 3 times per year. How much money will Ashley have in her
Vadim26 [7]
A=p (1+r/k)^kt
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5 0
3 years ago
Write an equation for an ellipse centered at the origin, which has foci at (0,\pm\sqrt{63})(0,± 63 ​ )left parenthesis, 0, comma
steposvetlana [31]

Answer:

\frac{x^{2} }{4312 } + \frac{y^{2} }{8281 }

Step-by-step explanation:

Since the foci are at(0,±c) = (0,±63) and vertices (0,±a) = (0,±91), the major axis is the y- axis. So, we have the equation in the form (with center at the origin) \frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} }.

We find the co-vertices b from b = ±√(a² - c²) where a = 91 and c = 63

b = ±√(a² - c²)

= ±√(91² - 63²)

= ±√(8281 - 3969)

= ±√4312

= ±14√22

So the equation is

\frac{x^{2} }{(14\sqrt{22}) ^{2} } + \frac{y^{2} }{91^{2} } = \frac{x^{2} }{4312 } + \frac{y^{2} }{8281 }

8 0
3 years ago
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