Suppose Serena invests the $2,500 for 3 years and earns $255.What was the rate of interest?

Answers

Answer 1

Answer: I=PRT
P for Principle Amount
R for Rate
T for Time in years

255 = 2500 × r × 3
255 = 7500 × r
Divide by 7500 on both sides to isolate r
$(255)/(7500)$ = $(7500 * r)/(7500)$
7500 and 7500 cancels out

0.034 = r
0.034 × 100 = 3.4% (to convert it as a percentage)
Rate of Interest: 3.4%

Answer 2

Answer:

Answer:

3.4%

Step-by-step explanation:

Here, Principal= $2500

Simple Interest= $255

Time= 3 years

we have to find the rate of interest

Rate of interest= $(simple interest. 100)/( p. t)$

Rate= $(255)/(2500)$ × $(100)/(3)$

Rate of interest= 34%

Hence, rate of interest is 3.4%

Hence, the correct answer is 3.4 %

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Multiply.Express your answer in lowest terms.Multiply.

Express your answer in lowest terms.

-5/6 * (-3/10)=

Answers

$- (5)/(6) \cdot - (3)/(10) = (15)/(60) = (5* 3* 1)/(5* 3 * 4)= \boxed{\bf{(1)/(4) }}$

Solve this system of equation by substitution
-2x-y=-9
5x-2y=18

Answers

$\begin{cases} -2x-y=-9 \n 5x-2y=18 \end{cases}\n\n \begin{cases} y=-2x+9 \n 5x-2y=18 \end{cases}\n\nsubstitution \n\n 5x-2 \cdot (-2x+9)=18 \n5x+4x-18=18 \n9x-18+18\n9x=36\ \ /:9\nx=(36)/(9)\nx=4\n=================\ny=-2x+9 \ny=-2 \cdot 4+9 =-8+9=1\n \nAnswer:\n\n\begin{cases} x=4 \n y=1 \end{cases}$

-2x - y = -9
y = -2x + 9

5x-2(-2x + 9) = 18
5x - (-4x +18) = 18
9x -18 = 18
9x = 36
x=4

-2x - y = -9
-2(4) - y = -9
-8 - y = -9
-y = -1
y = 1
Point of intersection: (4,1)

Rewrite in order from least to greatest 35% 3/10 37/100 0.305

Answers

Answer: 3/10 -> 0.305 -> 35% -> 37/100

Step-by-step explanation:

Convert it all to the same format. Let's choose decimal.

35% = 0.35

3/10 = 0.3

37/100 = 0.37

0.305 = 0.305

We then rank from least to greatest.

0.3 -> 0.305 -> 0.35 -> 0.37

Then convert back.

3/10 -> 0.305 -> 35% -> 37/100

What is 3 fourths minus 7 eighths

Answers

it will be -1/8 because 8 is the common denominator and the numerator will be subract too so it is -1/8

i suggest you flip it making it 7 eighths minus three forths which gives you 1 eighth

Solve for y. 1/2y + 5-3/4y=0

Answers

Answer:

Y=20

Step-by-step explanation:

Y=20 if you add then subtract

4n-18=52

I knw it is simple but I don't like these kind of problems thanks!

Answers

the answer is 17.5

4n-18=52
+18 +18
4n=70
---------
4

n=17.5

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