3 years ago

2) y= 4x - 2 3х + 2y = 7 in subsitutuion

Mathematics

1 answer:

kotykmax [81]3 years ago

3 0

Answer:

x=1

Step-by-step explanation:

Substitute the y equation for the variable y in the second question

3x +2(4x-2)=7

3x+8x-4=7

11x-4=7

11x=11

x=1

You might be interested in

All of the following are valid excel arithmetic operators except ____.

Sphinxa [80]

Answer:

i dont give a freak........

Step-by-step explanation:

7 0

3 years ago

What is the arithmetic of the following numbers? 4,9,6,3,4,2

Nezavi [6.7K]

Answer:

4.7

Step-by-step explanation:

Just do 28/6 and the simplify it to 14/3 and divide and get 4.6 repeating round it to 4.7

5 0

3 years ago

15 points f (x) = 1/x+5 -1. Find the inverse of (x) and its domain.

erastovalidia [21]

Answer:

Step-by-step explanation:

$f(x)=\frac{1}{x+5} -1\\let~f(x)=y\\y=\frac{1}{x+5} -1\\flip~x~and~y\\x=\frac{1}{y+5} -1\\x+1=\frac{1}{y+5} \\y+5=\frac{1}{x+1} \\y=\frac{1}{x+1} -5\\f^{-1}(x)=\frac{1}{x+1} -5\\x+1\neq 0\\x\neq -1$

6 0

3 years ago

Solve for a.

Tanya [424]

Final Answer: All Real Numbers

Steps/Reasons/Explanation:

Question: Solve for a. $4(a + 3)=12 + 4a$ .

Step 1: Expand.

$4a + 12 = 12 + 4a$

Step 2: Cancel $4a$ on both sides.

$12 = 12$

Step 3: Since both sides equal, we would have infinitely many solutions.

~I hope I helped you :)~

7 0

3 years ago

Read 2 more answers

24 cakes is 75% of . what number of cakes? 47

vova2212 [387]

Answer:

Step-by-step explanation:

Do the butterfly multiplication method

24 x 100= 2,400

2,400/75 =32

5 0

3 years ago