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fiasKO [112]
3 years ago
9

If the sum of two numbers is 90 but their difference is 12 what are the two numbers

Mathematics
1 answer:
emmainna [20.7K]3 years ago
5 0
51 and 39. Have a  great day!
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3abc<br> What is the coeficient of c?
romanna [79]

Answer:

3

Step-by-step explanation:

3 is the coefficient of c as it is a constant, whereas a and b are variables, subject to change.

4 0
2 years ago
Find the compound interest on 800 at 5% per annum for 2 years.​
Ludmilka [50]

Answer:

C = 82

Step-by-step explanation:

Given

R = 5\% -- Rate

P = 800 -- Principal

N = 2 -- Time

Required

Determine the compound interest

First, we calculate the Amount (A)

A = P(1 + R)^N

A = 800*(1 + 5\%)^2

Express % as decimal

A = 800*(1 + 0.05)^2

A = 800*(1.05)^2

A = 882

The compound interest (C) is then calculated as:

C = A -P i.e. Amount - Principal

C = 882 - 800

C = 82

7 0
2 years ago
Solve for y. identify the slope and y-intercept. then graph the equation.<br><br> y=-3x+1
stealth61 [152]

Answer:

the slope -3, slope meaning rate of change and y intercept is 1.

hope that answers your question

(used desmos to graph, good stuff!!!)

4 0
2 years ago
Despite control measures, the pigeon population in Winchester is increasing by 10% each year. If there are currently 9,520 pigeo
TEA [102]

Using an exponential function, it is found that there will be 32,866 pigeons in 13 years.

<h3>What is an exponential function?</h3>

An increasing exponential function is modeled by:

A(t) = A(0)(1 + r)^t

In which:

  • A(0) is the initial value.
  • r is the decay rate, as a decimal.

The initial value and the growth rate are given by:

A(0) = 9520, r = 0.1.

Hence the function is given by:

A(t) = 9520(1.1)^t

Hence in 13 years, the amount of pigeons will be of:

A(13) = 9520(1.1)^{13} = 32866

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

3 0
2 years ago
The sum of the area of 2 circles is 80pi square meters. Find the length of a radius of each circle if one of them is twice as lo
IgorC [24]
80p=pr^2+p(2r)^2
80p=pr^2+4pr^2
80=r^2+4r^2
80=5r^2
16=r^2
r=4 for the smaller circle´s radius, and 8 is the larger circle´s radius.

Have a nice day, I hope this was helpful :D
8 0
3 years ago
Read 2 more answers
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