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2 years ago

The total simple interest on $1600 invested for five years is $224. What is the percentage rate per annum?

Mathematics

2 answers:

oksano4ka [1.4K]2 years ago

7 0

Step-by-step explanation:

did u got the answer??.....

mash [69]2 years ago

6 0

Answer:

The percentage rate per annum is 2.8%

Step-by-step explanation:

We need to multiply the principal by the time, then divide the interest by the product of P×T, so:

1,600 × 5 = 8,000

224 ÷ 8,000 = 0.028

Then we convert our final product to a percentage.

0.028 to a percent is 2.8%

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lilavasa [31]

The answer is 432...........

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3 years ago

6. a. Sixty students in a class took an examination in Physics and Mathematics. If 17 of them passed Physics only, 25 passed in

Ivahew [28]

Let $C$ be the set of all students in the classroom.

Let $P$ and $M$ be the sets of students that pass physics and math, respectively.

We're given

$n(C) = 60$

$n(P \cap M') = 17$

$n(P \cap M) = 25$

$n((P \cup M)') = n(P' \cap M') = 9$

i. We can split up $P$ into subsets of students that pass both physics and math $(P\cap M)$ and those that pass only physics $(P\cap M')$ . These sets are disjoint, so

$n(P) = n(P\cap M) + n(P\cap M') = 25 + 17 = \boxed{42}$

ii. 9 students fails both subjects, so we find

$n(C) = n(P\cup M) + n(P\cup M)' \implies n(P\cup M) = 60 - 9 = 51$

By the inclusion/exclusion principle,

$n(P\cup M) = n(P) + n(M) - n(P\cap M)$

Using the result from part (i), we have

$n(M) = 51 - 42 + 25 = 34$

and so the probability of selecting a student from this set is

$\mathrm{Pr}(M) = \dfrac{34}{60} = \boxed{\dfrac{17}{30}}$

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2 years ago

Solve the formula 2x − 3y = 18 for y.

tensa zangetsu [6.8K]

Answer:

y = $\frac{2}{3}$ x - 6

Step-by-step explanation:

2x - 3y = 18 ( subtract 2x from both sides )

- 3y = - 2x + 18 ( divide terms by - 3 )

y = $\frac{2}{3}$ x - 6

5 0

2 years ago

Read 2 more answers

What is the perimeter of parallelogram ABDC? 14 cm 13 cm 12 cm 11 cm

Finger [1]

Answer:

13 cm

Step-by-step explanation:

Add up all of the sides and you should get 13.

3 + 3 + 3.5 + 3.5 = 13

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2 years ago

Solve the equation for x 3/10x-1/5=1

Vikki [24]

Answer:

x=4

Step-by-step explanation:

$\frac{3}{10}x-\frac{1}{5}=1\\ \\\frac{3}{10}x=\frac{6}{5} \\3x=12\\x=4$

3 0

3 years ago