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3 years ago

7

In 10 mins a heart can beat up to 700 times. At this rate, in how many mins will a heart beat 140 times? At what rate can a hear

t beat?

1 answer:

Virty [35]3 years ago

5 0

At 2 minutes, the heart would beat 140 times.
700/10=70
140/70=2

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For a summer reading program, you are asked to read 3 books from a list of 8 book. how many different groups of 3 books can you

Molodets [167]

Answer-
You can read 2 groups of three books.

Step-by-step expression-
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3 years ago

You wish to make an

Leokris [45]

Using the interest formulas, it is found that the values of the investment are given as follows:

Using simple interest, the value will be of $34,000.

Using compound interest, the value will be of $144,461.

Using continuous compounding, the value will be of $148,002.

<h3>Simple Interest</h3>

Simple interest is used when there is a single compounding per time period.

The amount of money after t years in is modeled by:

$A(t) = P(1 + rt)$

In which:

P is the initial amount.

r is the interest rate, as a decimal.

In this problem, we have that the parameters are as follows:

P = 9000, r = 0.07, t = 40.

Hence:

$A(t) = 9000(1 + 0.07 x 40) = 34200$

<h3>Compound interest</h3>

$A(t) = P\left(1 + \frac{r}{n}\right)^{nt}$

n is the number of compounding, for quarterly n = 4, then:

$A(t) = 9000\left(1 + \frac{0.07}{4}\right)^{4 \times 40}$

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<h3>Continuous compounding</h3>

$A(t) = Pe^{rt}$

Hence:

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More can be learned about the interest formulas at brainly.com/question/25296782

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

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Yakvenalex [24]

Answer:

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hence , (b.)

Step-by-step explanation:

the given triangle is a right angled triangle, so

by using trigonometry.

=》

$\tan(a) = \tan(30) = \frac{1}{ \sqrt{3} }$

and we know,

=》

$\tan(a) = \frac{a}{b}$

so, by above values of tan ( a ) we get,

=》

$\frac{a}{b} = \frac{1}{ \sqrt{3} }$

=》

$\frac{a}{12} = \frac{1}{ \sqrt{3} }$

=》

$a = \frac{12}{ \sqrt{3} }$

=》

$a = 4 \sqrt{3}$

=

=》

$a = 6.93$

hence, a = 6.93 m

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3 years ago

What's the range of 37000 and 45000

Galina-37 [17]

Range: Subtract <span>37000 from 45000 and you'll have it.</span>

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3 years ago