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3 years ago

One number is four times another number. The sum of their reciprocals is 1/4 . What are the numbers?

Mathematics

1 answer:

alexgriva [62]3 years ago

4 0

Answer:

x=2, y=8

Step-by-step explanation:

Set up the equations:

4x=y

1/4x+1/y=1/4

---------------------

1/y+1/y=1/4

2/y=1/4

cross product

y*1=2*4

y=8

4x=8

x=8/4=2

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Help me please!!!! The question is in the picture^^^

Aleksandr [31]

Answer:

7,173

x = 7

Step-by-step explanation:

Within the question it gives two examples.

x = 0 corresponds to 2000

x = 1 corresponds to 2001

If you pay close attention the x-value is always the same as the last digits in the year. So with 2007 the last digit is 7, which then leads us to determine that

x = 7

f (x) = -327 (7) + 9462

f (x) = -2289 + 9462 = 7173

6 0

3 years ago

Convert F2 from hexadecimal to binary.

Yakvenalex [24]

Question:

"Convert F2 from hexadecimal to binary."

Answer:

11110010

Step-by-step explanation:

Hex F2 to decimal explained:

The value of HEX F2 in decimal is 242.

The value of HEX F2 in binary is 11110010.

2 2 X 160 = 2

F 15 X 161 = 240

HEX F2 = 242

The binary value is: 11110010

A hexadecimal number has base 16 (0,1,2,3,4,5,6,7,8,9 A,B,C,D,E,F).

basic hex to a decimal conversion table

Hex 0 1 2 3 4 5 6 7 8 9 A B C D E F

Decimal 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

HOPE THIS HELPS!

PLEASE MARK BRAINLIEST IF THIS HELPED YOU LEARN! :)

3 0

2 years ago

Can someone help me answer these two questions

andrew11 [14]

Answer:

C) 7=y=5x+11

B) m=-4/5, b=13/5

Step-by-step explanation:

Problem 1:

A function is linear if its slope is constant and/or its graph is straight (that means 1-degree polynomials only). Therefore, C is the only correct answer.

Problem 2:

Convert to slope-intercept form (y=mx+b):

4x+5y=13

5y=13-4x

y=13/5-4/5x

y=-4/5x+13/5

Now we can see that since the original equation is in slope-intercept form (y=mx+b), the slope, m, is -4/5, and the y-intercept, b, is 13/5, making option B the correct answer.

8 0

2 years ago

My brain is gone for the day, so what comes first when finding points on a graph, vertical, or horizontal?

exis [7]

Just remember it's along the corridor and up the stairs so horizontal comes first

8 0

3 years ago

Solve the system by graphing. Tell whether the system has one solution, infinitely many solutions, or no solution.

masha68 [24]

Here: 6y = 6x + 12
6y - 6x = 12

Divide by 6,
y - x = 2
Which is nothing but first equation!

In short, Your Answer would be: "Infinitely Many solutions"
[ As L.H.S = R.H.S ]

Hope this helps!

3 0

3 years ago