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1 year ago

The difference of two numbers is 12. Their sum is 28. Find the numbers.

Mathematics

1 answer:

Sindrei [870]1 year ago

7 0

Answer:

let the other number be x,

x-28=12

x=12+28

x=40

I hope it helps you

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What is the yintercept in the equation y=4x-3?

sergejj [24]

Answer:

-3

Step-by-step explanation:

The main formula for slope intercept form is y=mx+b

m=slope

b=y-intercept

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2 years ago

Solve the following system of equations by linear combination: 5x 2y = 14 y = x – 7

natta225 [31]

I would use subsitution
y=x-7
sub x-7 for every x
5x+2(x-7)=14
5x+2x-14=14
add 14 to both sides
7x=28
divide both sides by 7
x=4
sub
y=x-7
y=4-7
y=-3

x=4
y=-3
(4,-3)

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2 years ago

Stephanie left Riverside, California, driving her motorhome north on Interstate 15 towards Salt Lake City at a speed of 56

Deffense [45]

Answer:

2.5

Step-by-step explanation:

56(t+1/2)=70 t

56T + 28= 70T

28=70T-56T

28=14

2=T

s=T+ 1/2

S=2+ 1/2

S=2.5 hours

8 0

2 years ago

Read 2 more answers

a printing press will print 6,000 copies in 20 minutes. A second press can print 15000 copies in 60 minutes. How many more copy

Usimov [2.4K]

Printing Press 1: 6000/20 minutes which is 300/minute
Printing Press 2: 15000/60 minutes which is 250/minute

The faster press (the first one) would print 50 more copies per minute than the slower one (the second one).

7 0

2 years ago

Given the function f(X)= |3x-7|, find the values of X that satisfy the equation f(X) = 4

Kay [80]

Answer:

x = 1 or x = $\frac{11}{3}$

Step-by-step explanation:

The expression inside the absolute value function can be positive or negative

That is 3x - 7 = ± 4

There are 2 equations to solve

(1)

3x - 7 = 4 ( add 7 to both sides )

3x = 11 ( divide both sides by 3 )

x = $\frac{11}{3}$

(2)

3x - 7 = - 4 ( add 7 to both sides )

3x = 3 ( divide both sides by 3 )

x = 1

5 0

2 years ago