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mario62 [17]
1 year ago
14

If the simple interest on ​$4000 for 8 years is ​$2240​, then what is the interest​ rate?

Mathematics
1 answer:
mixer [17]1 year ago
5 0

~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \$2240\\ P=\textit{original amount deposited}\dotfill & \$4000\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &8 \end{cases} \\\\\\ 2240 = (4000)(\frac{r}{100})(8) \implies 2240=\cfrac{32000r}{100}\implies 2240=320r \\\\\\ \cfrac{2240}{320}=r\implies 7=r

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-6×4-64÷(-3.3+1.7)<br>Please help​
shepuryov [24]

Answer: 16

Step-by-step explanation:

-24-64 / (-1.6)

-24-64 / (-8/5)

-24 + 64 x 5/8

-24 + 8 x 5

-24 + 40

= 16

6 0
2 years ago
If q is the midpoint of segment PR, find the coordinates of R if P (11,-2) and Q (4,3) ​
Murrr4er [49]

Answer:

  R(-3, 8)

Step-by-step explanation:

R = 2Q -P

R = 2(4, 3) -(11, -2) = (8-11, 6+2)

R = (-3, 8)

_____

You can derive the formula for the endpoint from the formula for the midpoint:

  Q = (R + P)/2

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3 0
2 years ago
Y ( x + w ) = c ( x + z )
ycow [4]

The formula for x in terms of other terms in the equation is; x = (cz-yw)/(y-c).

<h3>What is the formular for x in term of other terms in the equation?</h3>

According to the task content, it follows that the variable X is to be made the subject of the formula;

Hence, it follows that;

y ( x + w ) = c ( x + z )

yx +yw = cx +cz

x(y-c) = (cz-yw)

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Remarks: The complete question requires that x be made the subject of the formula.

Read more on subject of formula;

brainly.com/question/11000305

#SPJ1

7 0
1 year ago
Find the equation of the line which passes through the point (-4,12) and is perpendicular to the given line. Express your answer
Vika [28.1K]

Answer:

y = 1/7x + 88/7

Step-by-step explanation:

y = mx +b

since it is perpendicular you have to get the negative reciprocal of the slope which is 1/7

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12 = 1/7(-4) + b and then solve for b

12 = -4/7 + b

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8 0
3 years ago
What is the volume of the prism?
Ber [7]
30 should be the volume
8 0
2 years ago
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