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3 years ago

Find the rate if the principal is $900, the time is 3 years, and the interest is $135. A) 5% B) 7.5% C) 15% D) 20%

1 answer:

3 0

The answer would be A) 5%. You can solve this by dividing 135$ by three years to get 45. then divide 45 by 900 to get 0.05 which is 5% in decimal form.

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PLEASE HELP! WILL MARK BRAINLIEST!

dedylja [7]

Answer:

at first put the value of X

after that do the equation.

Step-by-step explanation:

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3 years ago

Read 2 more answers

The length of a rectangle is three times its width. If the area of the rectangle is 243 m squared, find it’s perimeter

vlabodo [156]

Answer: 72

Step-by-step explanation:

L= 3W

area of a rectangle A= LxW

replace L with 3 W

A=3W*W= 3w^2

243=3W^2

243/3=W^2

81=w^2, and W=9

L=3*9=27

P= (L+W)=2(27+9)=72

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2 years ago

Which is equivalent to √60n^11/256n^4 after it has been simplified completely? Assume n =0

motikmotik

Answer:

$\large\boxed{\dfrac{n^3}{8}\sqrt{15n}}$

Step-by-step explanation:

$\sqrt{\dfrac{60n^{11}}{256n^4}}\qquad\text{use}\ \dfrac{a^n}{a^m}=a^{n-m}\ \text{and}\ \sqrt{\dfrac{a}{b}}=\dfrac{\sqrt{a}}{\sqrt{b}}\\\\=\sqrt{\dfrac{60}{256}n^{11-4}}=\dfrac{\sqrt{60n^7}}{\sqrt{256}}=\dfrac{\sqrt{4n^{6+1}\cdot15}}{16}\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=\dfrac{\sqrt{4n^6\cdot15n}}{16}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\=\dfrac{\sqrt{4n^{3\cdot2}}\cdot\sqrt{15n}}{16}\qquad\text{use}\ (a^n)^m=a^{nm}$

$=\dfrac{\sqrt{4(n^3)^2}\cdot\sqrt{15n}}{16}=\dfrac{\sqrt{4}\cdot\sqrt{(n^3)^2}\cdot\sqrt{15n}}{16}=\dfrac{2\!\!\!\!\diagup^1\sqrt{15n}}{16\!\!\!\!\!\diagup_8}=\dfrac{n^3\sqrt{15n}}{8}$

5 0

3 years ago

23% of 432 students equals how many students?

irga5000 [103]

Multiply 23% by 432.
change 23% into a decimal which simply is 0.23
0.23*432=99.36
since it's students, and u can't have part of a student round it off and say 99 students.

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3 years ago

What is the slope of the line?

mamaluj [8]

Answer:

4/5

Step-by-step explanation:

The line is positive since it's going in an upwards direction (from l-->r). You can take any point from the line, and use RISE/RUN to find the slope. SInce you gou up 4, and right 5, the slope is 4/5.

I hope this made sense and that it helped!!

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3 years ago