<span>The simple interest formula is:

A = P · (1 + r · t)
where:
A = total amount
P = principal
r = rate
t = time

Let's solve for r:
A = P + P · r · t
P · r · t = A - P

r = (A - P) / (P · t)

The quantity A - P is defined as the Interest, therefore:
r = I / (P <span>· t)
= 1020 / (8500 </span>· 4)
= 0.03

Therefore the rate was 3%.

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5 0

3 years ago

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A tree is broken at a height of 5 m from the ground and its top touches the ground at a distance of 12 m from the base of the tr

frozen [14]

Answer:

The original height of the tree is 18 m.

Step-by-step explanation:

Please see attached photo for explanation.

From the diagram, we shall determine the value of 'x'. This can be obtained by using the pythagoras theory as follow:

x² = 5² + 12²

x² = 25 + 144

x² = 169

Take the square root of both side

x = √169

x = 13 m

Finally, we shall determine the original height of the tree. This can be obtained as follow.

From the question given above, the tree was broken from a height of 5 m from the ground which form a right angle triangle with x being the Hypothenus as illustrated in the diagram.

Thus, the original height of the will be the sum of 5 and x i.e

Height = 5 + x

x = 13 m

Height = 5 + 13

Height = 18 m

Therefore, the original height of the tree is 18 m.

3 0

3 years ago

A salesperson is paid $60 per week plus $4.50 per sale. THIS WEEK, the salesperson wants to earn more than $240. How many sales

inn [45]

Answer:

42 sales plz mark as brainliest

Step-by-step explanation:

60 + 4.5(x) =250

60 + 4.5x =250

4.5x = 250-60

4.5x = 190

x = 190/4.5

x= 42 sales

6 0

3 years ago

Professor Burger orders flowers to be delivered to his mother. The flowers cost $59.95, not including tax. A bouquet of flowers

creativ13 [48]

Answer:$60.30

Step-by-step explanation:

6 0

3 years ago

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