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brilliants [131]

3 years ago

8

Find the two numbers whose sum is54 and whose difference is 4

2 answers:

Andrew [12]3 years ago

7 0

Sum of 54: X + Y = 54
Difference is 4: X - Y = 4

Solve for one variable first.

X = 4 + y (rewritten from second equation)

Now plug into the first equation for x

4 + y + y = 54
4 + 2y = 54 (subtract 4)
2y = 50 (divide by 2)
Y = 25

Now use Y to solve for X

X - 25 = 4 (add 25 on each side)
X = 29

harkovskaia [24]3 years ago

4 0

Answer: I can not see the picture

Step-by-step explanation:

can you show it?

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Belle walks 7/10 mile each morning, and 1, 4/10 miles each evening.

kow [346]

Answer:

10.5 miles.

Step-by-step explanation:

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We can just multiply the amount of miles per day by 5, (2.1 x 5) and we get 10.5 miles total.

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3 years ago

What is .006 as a percent

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Define a function f on a set of real numbers as follows: f(x) = 3x − 1 x , for each real number x ≠ 0 Prove that f is one-to-one

dalvyx [7]

Answer with Step-by-step explanation:

We are given that

$f(x)=\frac{3x-1}{x}$

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By using the definition of f to rewrite the left hand side of this equation

$f(x_1)=\frac{3x_1-1}{x_1}$

Then, by using the definition of f to rewrite the right hand side of this equation of $f(x_1)=f(x_2)$

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Equating the expression then we get

$\frac{3x_1-1}{x_1}=\frac{3x_2-1}{x_2}$

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$3x_1x_2-3x_1x_2+x_1=x_2$

$x_1=x_2$

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3 years ago

Given that f(x)= 3x^2-5x +3 and g(x)= -x^2 + 17 find (f-g) (x)

Sliva [168]

4x^2-5x-14 is your answer :)

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3 years ago