So you need to isolate the variable in order to get your answer. This is how you do it.
3x + 5 = 2x - 7
Subtract 2x from both sides.
1x + 5 = -7
Subtract 5 from both sides to have the variable by itself.
1x = -12
Divide 1 to both sides to find the value of x.
x = -12
Now we need to check.
3(-12) + 5 = 2(-12) - 7
-36 + 5 = -24 - 7
-31 = -31
Since both sides or the same you now know that -12 is the solution.
I hope this helps love! :)
Answer:
81.39% increase.
Step-by-step explanation:
Given: There is change in number from 43 to 78.
First lets find the amount of change or difference in number.
Difference in number=
∴ Difference in number show that there is an increase of 35 number.
Now, finding the percent change in the number.
Percent=
⇒ Percent change in number=
∴ 81.39% increase in the number.
6.1 means the rate of how much the child weights at certain ages
10 means how much the child weighs at 0 years old
2 times . 18*2=36 The answer is 2
Answer:
Step-by-step explanation:
We have two sides
and the preimeter
We can calculate the length of the third side:
substitute
Use the Heron's formula:
where
substitute: