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mezya [45]
3 years ago
9

Sara deposited $390 into the bank. She earned 3% simple interest. What is her balance after 5 years?

Mathematics
1 answer:
poizon [28]3 years ago
7 0

Answer:

$448.50

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Statistics</u>

Simple Interest Rate Formula: A = P(1 + rt)

  • A is final amount
  • P is principal amount
  • r is rate
  • t is time (in years)

Step-by-step explanation:

<u>Step 1: Define variables</u>

P = 390

r = 0.03

t = 5

<u>Step 2: Find </u><em><u>A</u></em>

  1. Substitute:                    A = 390(1 + 0.03 · 5)
  2. Multiply:                        A = 390(1 + 0.15)
  3. Add:                              A = 390(1.15)
  4. Multiply:                        A = 448.50

And we have our final answer!

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Jim is 6 / Harry is 2 

In 4 years Harry will be 6 
In 2 years Jim will be 8 and Harry will be 4 which is twice as much Harry's age.


hope this helps!
5 0
3 years ago
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Solve: -(1/4)m + 5 = 16
liq [111]

Answer:

m=-44

Explanation: distribute the negative and add -1/4 to m and then take the 5 away from 16 and then multiply both sides

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Drag each statement to show whether it is true, based on the graph.
brilliants [131]

Answer:

The price per one pound of almonds equal $2.20/0.65 lb

0.65 pounds of almonds cost $2.20

Step-by-step explanation:

Verify each case

case 1) The price per one pound of almonds equal $2.20/0.65 lb

<em>The statement is true</em>

To find the price per one pound calculate the unit rate

so

$2.20/0.65 lb=$3.38 per one pound

case 2) 2.2 pounds of almonds cost $0.65

The statement is not True

The correct is 0.65 pounds of almonds cost $2.2

case 3) Each bag of almonds weighs 2.2 pounds

Cannot be determined

In the problem there is no information about how much each bag of almonds weighs

case 4) 0.65 pounds of almonds cost $2.20

The statement is True

The point (0.65,2.20) lie to the line of the the graph

6 0
3 years ago
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For what value of x is sq 896z^15/225z^6 = xz^4/15
Ratling [72]

Answer:

Value of x is, 8

Step-by-step explanation:

Given:  \sqrt{\frac{896z^{15}}{225z^6}} =\frac{xz^4}{15} \sqrt{14z} ,.....[1]

To find the value of x:

Using exponent rules:

  • (a^n)^m = a^{nm}
  • a^n \cdot a^m = a^{n+m}

Taking square both sides in [1] we have;

\frac{896z^{15}}{225z^6} = (\frac{xz^4}{15})^2 \cdot (14z)

Simplify:

\frac{896z^{15}}{225z^6} =\frac{x^2z^8}{225} \cdot (14z)

or

\frac{896z^{15}}{225z^6} =\frac{14x^2z^9}{225}

Multiply both sides by \frac{225}{14z^9} we get;

x^2 = \frac{896 z^{15}}{225z^6} \times \frac{225}{14 z^9} = \frac{896 z^{15}}{14 z^{9+6}}

Simplify:

x^2 = \frac{896 z^{15}}{14 z^{15}} = 64

or

x = \sqrt{64}

Simplify:

x = 8

Therefore, the value of x is, 8


5 0
3 years ago
Presume we have this sack of marbles. There are 4 green marbles, 3 red marbles, 2 blue marbles, and 1 yellow marble.
aleksley [76]

Answer:

There is a 33.3% chance you will pull a red marble after pulling a blue one.

Step-by-step explanation:

There are a total of 10 marbles in the sack. A blue marble is removed from the bag without being replaced, leaving 9 in the sack. 3 of the marbles left are red. To find the probability of pulling a red marble, we divide the number of red marbles by the number of total marbles.

3/9 = 1/3 = 0.333 = 33.3%

7 0
3 years ago
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