Answer:
-28 + 7x
General Formulas and Concepts:
<u>Pre-Algebra</u>
Step-by-step explanation:
<u>Step 1: Define</u>
-7(4 - x)
<u>Step 2: Simplify</u>
- Distribute -7: -7(4) - 7(-x)
- Multiply: -28 + 7x
Answer:
Then study bro but here is your ans
Step-by-step explanation:
7 c
8 a
Answer:
11.6--------------------------------------
Explanation:
See the attached image for a visual reference
The distance from point D to E is 21 units. Point C is the midpoint, so CD is 10.5 units long (21/2 = 10.5)
We have a right triangle ACD. The legs are
AC = 5
CD = 10.5
The hypotenuse is
AD = x
Because AD is another radius of the same circle
Use the pythagorean theorem to find x
a^2 + b^2 = c^2
5^2 + 10.5^2 = x^2
25 + 110.25 = x^2
135.25 = x^2
x^2 = 135.25
x = sqrt(135.25)
x = 11.629703349613
which rounds to
11.6 when rounding to the nearest tenth (one decimal place)
Alright, here are the divisibility rules:
2 -- If the last digit is 0, 2, 4, 6, or 8.
3 -- If the sum of the digits is divisible by 3.
4 -- If the last two digits are divisible by 4.
5 -- If the last digit is 0 or 5.
6 -- If the number is divisible by 2 or 3.
7 -- Cross off the last digit, double it, and subtract. If new number is divisible by 7, the original number is divisible by 7.
8 -- If the last three digits are divisible by 8.
9 -- If the sum of the digits is divisible by 9.
10 -- If the last digit is 0.
11 -- Subtract the last digit from the number formed by the remaining digits. If new number is divisible by 11, the original number is divisible by 11.
12 -- If the number is divisible by 3 and 4.
Let's use these rules to answer your questions.
Is 26 divisible by 2?
Answer: C.
Is 216 divisible by 3?
Answer: B.
Is 40,100 divisible by 10?
Answer: C.
Is 318 divisible by 9?
Answer: A.
Is 87,235 divisible by 5?
Answer: B.
Is 43,121 divisible by 3?
Answer: A.
Is 1,112 divisible by 5?
Answer: A.
Is 10,000,058 divisible by 10?
Answer: A.
Is 94,032 divisible by 9?
Answer: B.
Is 201,086 divisible by 2?
Answer: C.
Well, that answers all of your questions! :)