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Ganezh [65]
2 years ago
7

5(x+2)=20 explain step by step

Mathematics
1 answer:
garri49 [273]2 years ago
6 0
Divide by 5 each side
X+2=4
Subtract 2 from each side
X=2

5(2+2)=20
Does work


In algebra when isolating (leaving alone on one side) x, you do the opposite operation, thus multiplying when you are trying to get rid of a division and vice versa
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5y - 4x = -7<br> 2y + 4z = 14<br> Solve for x and y
castortr0y [4]

Answer:

et's solve for x.

5y−4x=−72y+4z

Step 1: Add -5y to both sides.

−4x+5y+−5y=−72y+4z+−5y

−4x=−77y+4z

Step 2: Divide both sides by -4.

−4x

−4

=

−77y+4z

−4

x=

77

4

y−z

Answer:

x=

77

4

y−z

Let's solve for y.

5y−4x=−72y+4z

Step 1: Add 72y to both sides.

−4x+5y+72y=−72y+4z+72y

−4x+77y=4z

Step 2: Add 4x to both sides.

−4x+77y+4x=4z+4x

77y=4x+4z

Step 3: Divide both sides by 77.

77y

77

=

4x+4z

77

y=

4

77

x+

4

77

z

Answer:

y=

4

77

x+

4

77

z

Step-by-step explanation:

I think that can help :) wanna chat add me as  friend

8 0
3 years ago
Read 2 more answers
On a class trip to the zoo, there is 1 chaperone for every 4 students. If 5 chaperones are on the trip, how many students are go
aleksandr82 [10.1K]

Answer:

20 Students

Step-by-step explanation:

If there is 1 chaperone for every 4 students, and there are a total of 5 chaperones on the trip, you can use this information to know that..

If there are 5 chaperones and 4 students for each chaperone, that would give you 20 students!

6 0
2 years ago
Find the distance between the points (7,–9) and (–2,–4).
Alexandra [31]
The answer would be √106
4 0
3 years ago
Which of the following has an x term when simplified
34kurt

Answer:

b

Step-by-step explanation:

if you imply all the other ones, all the x's cancel out.

4 0
3 years ago
Which of the following functions are solutions of the differential equation y+4y+4y=0? A. y(x) =e^-2x B. y(x) = e^+22 C. y(x) =
zmey [24]

Answer: E. y(x) = 0

Step-by-step explanation:

y(x) = 0 is the only answer from the options that satisfies the differential equal y" - 4y' + 4y = 0

See:

Suppose y = e^(-2x)

Differentiate y once to have

y' = -2e^(-2x)

Differentiate the 2nd time to have

y" = 4e^(-2x)

Now substitute the values of y, y', and y" into the give differential equation, we have

4e^(-2x) - 4[-2e^(-2x)] + 4e^(-2x)

= 4e^(-2x) + 8e^(-2x) + 4e^(-2x)

= 16e^(-2x)

≠ 0

Whereas we need a solution that makes the differential equation to be equal to 0.

If you test for the remaining results, the only one that gives 0 is 0 itself, and that makes it the only possible solution from the options.

It is worth mentioning that apart from the trivial solution, 0, there is a nontrivial solution, but isn't required here.

7 0
3 years ago
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