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tatuchka [14]
3 years ago
5

Interest earned: $294 Principal: $600 Interest rate: 7% Time:

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
6 0

Answer: 7 years

Step-by-step explanation:

Given the formula for simple interest as

Principal × Rate × Time

To find Time is therefore 100 × Interest/ Principal x Rate

From the above question,

Principal is given as 600;

Interest is 294 and

Rate is 7%

Slot the values into the formula:

100 × 294/ 600 x 7

= 29400/4200

=7

Therefore, Time (T) is 7 years

I hope this is clear, please mark as brainliest

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How to solve 2x-y=17;x-y=10
Nataliya [291]
The answer is that y is equal to -3 and x is equal to 7 
2x-y=17
-2(x-y)=10 )
--------------
2x-y=17
-2x+2y=-20
----------------
y=-3

x-y=10 
x-(-3)=10
x+3=10
 -3   -3
----------
x=7



8 0
3 years ago
Please help and tell me why u got that answer, I will mark brainliest
gregori [183]
The answer is C

i think so
4 0
2 years ago
What is 2/5 times -10
maxonik [38]

Answer:

-4

Step-by-step explanation:

2/5 times -10 = -4

6 0
3 years ago
Read 2 more answers
A ball is projected in to the air. Its height at time t is given by the equation
Ksju [112]
The equation gives the height of the ball. That is, h is the height of the ball. t is the time. Since we are looking for the time at which the height is 8 (h=8), we need to set the equation equal to 8 and solve for t. We do this as follows:

h=-16 t^{2} +60t+1
8=-16 t^{2} +60t+1
16 t^{2} -60t-1+8=0
16 t^{2} -60t+7=0

This is a quadratic equation and as it is set equal to 0 we can solve it using the quadratic formula. That formula is:
t= \frac{-bplus minus \sqrt{ b^{2}-4ac } }{2a}
You might recall seeing this as "x=..." but since our equation is in terms of t we use "t-=..."

In order to use the formula we need to identify a, b and c.
a = the coefficient (number in front of) t^{2} = 16.
b = the coefficient of t = -60
c = the constant (the number that is by itself) = 7

Substituting these into the quadratic formula gives us:
t= \frac{-(-60)plus minus \sqrt{ (-60)^{2}-4(16)(7) } }{2(16)}
t= \frac{60plus minus \sqrt{3600-448 } }{32}
t= \frac{60plus minus \sqrt{3152 } }{32}

As we have "plus minus" (this is usually written in symbols with a plus sign over a minus sign) we split the equation in two and obtain:
t=  \frac{60+56.1426}{32} =3.63
and
t=  \frac{60-56.1426}{32} =.12

So the height is 8 feet at t = 3.63 and t=.12

It should make sense that there are two times. The ball goes up, reaches it's highest height and then comes back down. As such the height will be 8 at some point on the way up and also at some point on the way down.


3 0
3 years ago
Find the mean of the data in the dot plot below.<br> jokers
galben [10]
There is no dot plot ?
6 0
3 years ago
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