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kari74 [83]
3 years ago
13

PLZ HELP Word Problems on the system of equations:

Mathematics
1 answer:
ahrayia [7]3 years ago
8 0

Answer:

let the two number be x and y then,

x+y=12

x-y=-4

-----------

2x=8

or, x = 4 put the value of x in first equation

4+y= 12

or, y=12-4

or, y= 8 hence the two number is 4 and 8

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lipka reads a book of 1/34 hrs everyday she reads the entire book in 6 days how many hours in all were required by her to read t
marshall27 [118]

Answer: She needs 10 1/2 hours to read the book.

Step-by-step explanation:I day = 1 3/4 hours

6 days = 1 3/4 x 6

6 days = 7/4 x 6

6 days = 42/4

6 days = 10 1/2 hours

8 0
2 years ago
What is an equation of the line passing between(4, -6) and (12, -8)?*
I am Lyosha [343]

Answer:

y= -1/4x - 5

Step-by-step explanation:

first you need to find the slope.

to do this you can use the equation: change in y/change in x which is also y2 - y1/x2-x1

-8 - (-6)/12-4

-2/8

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since the line's equation is y = mx + b, we still need to find the y-intercept. we can do this by just plugging in one of the points

-6 = -1/4(4) + b

-6 = -1 + b

-5 = b

so the final equation is y= -1/4x - 5

4 0
2 years ago
Find the sum of the following series:
Oksanka [162]

Answer:

The sum is 2635

Step-by-step explanation:

I did this problem

5 0
3 years ago
If f(x)= 5x + 4 and g(x) = 1/2x<br><br> find ,<br> a) fg(5)
Veseljchak [2.6K]

Answer:

f(g(5)) = 16.5

Step-by-step explanation:

To calculate f(g(5)), evaluate g(5) then substitute the value obtained into f(x)

g(5) = \frac{1}{2} × 5 = 2.5 , then

f(2.5) = 5(2.5) + 4 = 12.5 + 4 = 16.5

5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=f%282%29%20%2B%20g%283%29" id="TexFormula1" title="f(2) + g(3)" alt="f(2) + g(3)" align="absmi
Fofino [41]

Answer:

Step-by-step explanation:

I am sorry but please give detailed question

6 0
3 years ago
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