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3 years ago

Interest is calculated by _____.

1 answer:

5 0

Simple Interest is calculated using the formula: I=P*r*t
P=the principal (amount you start with)
r=percentage of interest earned
t= time in years

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Solves a systems of linear equations in two variables.

AURORKA [14]

1) (2,-1)
2) (-2,-1)
3)(.156,-2.22)

8 0

2 years ago

A bag contains 100 balls numbered from 1 to 100. one ball is removed. what is the probability that the number on this ball is od

muminat

Total number of balls = 100

Number of balls with odd numbers = 50
Number of balls with number greater than 80 = 20
Number of balls greater than 80 and is odd = 10
⇒ Number of favourable outcomes = 50 + 20 - 10 = 60

P(odd or greater than 80) = 60/100 = 3/5

Answer: 3/5

3 0

3 years ago

Mrs. Culland is finding the center of a circle whose equation is x2 + y2 + 6x + 4y – 3 = 0 by completing the square. Her work is

andrew11 [14]

The correct answer is:

(x + 3)^2 + (y + 2)^2 = 4^2, so the center is (–3, –2)

Further explanation:

The given equation of circle is:

$x^2+y^2+6x+4y-3 = 0$

In order to complete the square the terms have to be combined first

$x^2+y^2+6x+4y = 3\\x^2+6x+y^2+4y=3\\(x^2+6x)+(y^2+4y) = 3$

9 and 4 will be added to both sides of the equation to complete the square

$(x^2+6x+9)+(y^2+4y+4) = 3+9+4\\(x^2+6x+9)+(y^2+4y+4) = 16$

The next step completes the work

$(x+3)^2+(y+2)^2 = (4)^2\\$

Comparing with the standard form of circle

$(x-h)^2 + (y-k)^2 = r^2\\x - h = x+3\\h=-3\\y-k = y+2\\k = -2$

As the centre is (h,k), the centre of given circle will be:

(-3,-2)

Hence the correct answer is:

(x + 3)^2 + (y + 2)^2 = 4^2, so the center is (–3, –2)

Keywords: Circle, Equation of Circle

Learn more about equations of circles at:

#LearnwithBrainly

4 0

3 years ago

Homework help!

Ksju [112]

Answer:

Step-by-step explanation:

if x=0 => y = 2(0)+10= 10

y = mx + c

m = slope factor

=> y = 2x + 10

so, slope factor = 2

7 0

3 years ago

How do I solve f+4/g=6 for f showing my work

SIZIF [17.4K]

1. F+4/g=6 First, let’s simplify:
=> f+ 4/g
=> rewrite the given equation to fraction
=> f + 4 x g = (6) x g (multiply g on both sides) Then divide the equation
g
=> f + 4 = 6g (subtract the 4 on both sides)
=> (f + 4) – 4 = (6g) = 4
=> f = 6g – 4
Therefore the answer is f = 6g -4

4 0

3 years ago