Answer:
The answer is 5a-35.
Step-by-step explanation:
So, since you told me to explain, if a number is right next to a parentheses without any signs you multiply it.
But instead of doing 5 times 7a, you multiply both of them separately.
5 times a is pretty much just 5a. 5 times -7 is -35.
As a result, you will be left with 5a-35.
If you have anymore questions, let me know.
The formula to find the perimeter of a rectangle is:
P = 2(l + w)
plug in your known values to solve for the unknown
20 = 2(l + 3)
20 = 2l + 6
14 = 2l
14/2 = l
7 = l or l = 7
you can check this by plugging your l value into the equation
P = 2(l + w)
20 = 2(7 + 3)
20 = 2(10)
20 = 20
hope this helps :)
Answer:
Option A; -8 is correct
Step-by-step explanation:
We have given an expression:
(-2)+(-2)+(-2)+(-2)
Taking common factor (-2) from the above expression we will get
(-2)[1+1+1+1]
Now, simplify the above expression we will get
(-2)[4]
Now, after further simplification we will get
-8
Therefore, Option A; -8 is correct
<span>The answers are x = 2.33 and </span>x=1
3x^2 - 10x + 7 = 0
x3
x^2 - 10x + 21 = 0
After you find the factors, you divide them by 3, since you multiplied by 3 before.
(x - 7/3) (x - 3/3)
Simplify.
(x - 2.33) (x - 1)
Equal both to zero and solve.
(x - 2.33) = 0
(x - 1) = 0
x = 2.33
x = 1
Answer:
10. 30km
11. 288km
12. 99km
Step-by-step explanation:
If 1cm=12km, just take the amount of cm and multiply by 12km.
For example, 2.5x12=30, and 24x12=288.
I hope this helps :)
