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k0ka [10]
3 years ago
14

The Sum if two numbers is 54. The difference of the two numbers is 116. Find the numbers​

Mathematics
1 answer:
ziro4ka [17]3 years ago
7 0

Answer:

the numbers are 85 and -31.

Step-by-step explanation:

first, let the numbers be x and y.

so by question we have,

x+y=54.......(I)

x-y=116......(I I)

now, solve it through elimination method,

x+y=54

x-y=116

here, y and y cancelled out and we get,

or, x+x=54+116

or, 2x=170

or, x=170/2

therefore, x=85

now put value of x in any equation. let's put in eqn (I), we get,

or, x+y=54

or,85+y=54

or, y=54-85

so, y= -31

therefore, the numbers are 85 and - 31.

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Monthly sales of a particular personal computer are expected to decline at the following rate of S'(t) computers per​ month, whe
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Answer:

S(t) = -18t^\frac{5}{3}+2440

Company will take approximately 14 months

Step-by-step explanation:

Given function that shows the change rate of computers,

S'(t)=-30 t^{\frac{2}{3}}

Where,

t = number of months

On integrating,

\int S'(t) = -30\int t^{\frac{2}{3}} dt

S(t) = -30(\frac{t^{\frac{2}{3}+1}}{\frac{2}{3}+1})+C

S(t) = -30 (\frac{t^{\frac{2+3}{3}}}{\frac{2+3}{3}})+C

S(t) = -30(\frac{t^\frac{5}{3}}{\frac{5}{3}})+C

S(t) = -30(\frac{3t^\frac{5}{3}}{5})+C

S(t) =-18t^\frac{5}{3}+C

According to the question,

S(0) = 2,440,

\implies -18(0)^\frac{5}{3}+C=2440\implies C = 2440

Hence, the required function,

S(t) = -18t^\frac{5}{3}+2440

If S(t) = 1,000,

-18t^\frac{5}{3}+2440=1000

-18t^\frac{5}{3}=-1440

t^\frac{5}{3}=80

t = (80)^\frac{3}{5}\approx 13.86

6 0
3 years ago
You are given a cubic box with an edge length of 20in, what is the volume of the box?
larisa [96]

Answer:

= 40 inches3   i think

Step-by-step explanation:

Vbox = l × w × h

Vbox = 5 inches × 4 inches × 2 inches

Vbox = 20 inches2 × 2 inches

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3 years ago
A student solves the equation for v. Start with the original equation. Use the square root property. Use the division property o
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Answer:

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<em>The square root property should have been applied to both complete sides of the equation instead of to select variables. </em>

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Step-by-step explanation: i just took the test on edge

5 0
3 years ago
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Which of the following lines is parallel to line y=-1/2x-6
Tasya [4]
Whichever line has the same slope (-1/2) as this line is the answer
5 0
3 years ago
Check please :D <br> 12345678901234567890
bagirrra123 [75]

Answer: All but one was right

1. 0 (correct)

2. 34 (correct)

3. 398 (correct)

4. -350 (correct)

5. 20 (correct)

6. 200 (wrong)

7. 48 (correct)

8. -1000(correct)

9. 150 (correct)

10. -55 (correct)

Step-by-step explanation:

(2x5)x(9÷3)+4=10x3+4=30+4=34

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-10x20-30(5)=-200-150=-350

5x10-30=50-30=20

4(50-20÷4)+20=4(50-5)+20=4x45+20=180+20=200

3x4(20÷5)=12x4=48

-20(50x2)+5(200)=-20x100+5x200= -2000+1000=-1000

20x5+70-20=100+70-20=170-20=150

-5+10x(-5)==5+-50=-55

6 0
2 years ago
Read 2 more answers
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