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Brilliant_brown [7]
3 years ago
13

Two numbers are of the ratio 3:5. If their difference is 18, find the numbers.​

Mathematics
1 answer:
Sergio039 [100]3 years ago
4 0

x \div y = 3 \div 5  \\ it \: means  =  \\ 3y = 5x \\ x - y = 18 \\

To solve we multiply the last equation by 5 and we get the following:

5x-5y=90

But 5x=3y and we replace it in this equation:

3y-5y=90

-2y=90

y=-45

and x-(-45)=18 , x+45=18

x=-27

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Answer:

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What is f(0) for the function f(x) =2x+3
PolarNik [594]

Answer:

3

Step-by-step explanation:

f(x) =2x+3

Let x=0

f(0) =2*0+3

Multiply

f(0) =0+3

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3 years ago
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Peoples Bank offers 8% compounded continuously on CDs What amount invested now grow to 100,000 in 25 years Hint the continuous c
sleet_krkn [62]

Given:

Rate of interest = 8% compounded continuously.

Amount = 100,000

Time = 25 years

To find:

The principal value.

Solution:

Formula for amount after continuous compound interest:

A=Pe^{rt}

Where, A is amount, P is principal, r is the rate of interest and t is the number of years.

Putting A=100000, r=0.08, t=25 in the above formula, we get

100000=Pe^{0.08(25)}

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On further simplification, we get

P\approx 13533.528

Therefore, the amount 13533.528 is invested.

3 0
3 years ago
Complete the multiplication: 2EA
Lady bird [3.3K]

<span>In </span>mathematics<span>, a </span>matrix<span> <span>(plural </span></span>matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

 

Given that

E = [ 1 2]

 

<span>A = | 3  0|</span>

<span>      | 2 -1 |</span>

<span>2EA = 2 [1 2] | 3  0|</span>

<span>                      | 2 -1 |</span>

 

<span>2EA = [ 14  -4]</span>

<span> </span>

8 0
3 years ago
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HELP please and explain
jonny [76]
(x3)(x4) is x7 because when you have a problem like that, you have to ADD your exponents.

-(m4)3 is -m12 since you're multiplying them.

(z3)5 is z15

y4 x y5 is y9

thats all i know of. hope it helps cx
7 0
3 years ago
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