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lilavasa [31]
3 years ago
15

Does anyone know the answer

Mathematics
1 answer:
inna [77]3 years ago
3 0

you first check if it hyperbola,linear , exponential,parabola

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Mrs. Emily Francis saves RM10 000 in a bank . by the end of the eighth year , the money collected amounts to RM19 992.71.if the
Anna11 [10]

Answer:

8.85% per year

Step-by-step explanation:

To find the interest rate of a compounding interest, we use the formula:

r=n[(\dfrac{A}{P})^{\dfrac{1}{nt}}-1]

Before we start solving, let's break down all the variables that we have.

A = 19,992.71

P = 10,000.00

n = 2

t = 8

r = ?

Now let's put the values into the formula.

r=2[(\dfrac{19,992.71}{10,000.00})^{\dfrac{1}{2(8)}}-1]

r=2[(\dfrac{19,992.71}{10,000.00})^{\dfrac{1}{16}}-1]

r=2[(\dfrac{19,992.71}{10,000.00})^{0.0625}-1]

r=2[(1.9992.1)^{0.0625}-1]

r=2[1.0442499885-1]

r=2[0.0442499885]

r=0.08849997699 or 8.85%

So the rate the Mrs. Emily Francis got from the bank was 8.85% per year.

5 0
4 years ago
Which are the solutions of the quadratic equation x^2=-5x-3
frutty [35]
The correct answer would be \frac{-5 +/-  \sqrt{13} }{2}

In order to solve for this you must first get the equation equal to 0. 

<span>x^2=-5x-3 ----> add 5x to both sides. 
x^2 + 5x = -3 ----> add 3 to both sides.
x^2 + 5x + 3 = 0

Now knowing this we can use the coefficients of each one in descending order of power as a, b and c. 

a = 1 (because it is the coefficient to x^2)
b = 5</span> (because it is the coefficient to x)
c = 3 (because it is the end number)

Now we can plug these values into the quadratic equation. 

\frac{-b +/-  \sqrt{b^{2} - 4ac } }{2a}

\frac{-5 +/- \sqrt{5^{2} - 4(3)(1) } }{2(1)}

\frac{-5 +/- \sqrt{13} }{2}

And those would be your two answers.
5 0
3 years ago
Please help me on this math
stellarik [79]
Friendly phone= 0.06×400=24; 0.25×400= 100; 100+24+3.95=127.95;                   127.95×4= $511.8
Chatter= 0.098 × 400= 39.2; 0.192 × 400= 76.8; 76.8+39.2+4.95= 120.95;             120.95 × 4= $483.8
Phone A Lot= 0.089 × 400= 35.6; 0.24 × 400= 96; 35.6 + 96= 131.6; 
    131.6 × 4= $526.4

Chatter < Friendly phone < Phone A Lot 
 $483.8 < $511.8 < $526.4
The cheapest one would be Chatter= $483.8

Hope this helps :)



5 0
3 years ago
Last year, Mrs. Sclair's annual salary was $88,441. This year she
MAVERICK [17]

Answer:

A. she made $1,694.92 weekly last year

B.she makes $1,847.49 weekly this year

C. she makes $152.57 more weekly this year than ast year.

Step-by-step explanation:

3 0
3 years ago
How many more puppies weighed 3 pounds than 7 pounds
lara [203]

Answer:

It might be 4 pounds?

Step-by-step explanation:

7-3= 4

but this might be wrong

6 0
3 years ago
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