N + (n+1) + (n+2) + (n+3) = 90
if n is the first number, then the next number is 1 more than n, the next number is 2 more than n, etc.
Simplify the above expression:
4n + 6 = 90
4n = 84
n = 21
n+1= 22
n+2 = 23
n+3 = 24
Answer:
Hello,
<u>k=-3 and h=-2</u>
Step-by-step explanation:
![5\ is\ a \ root \of \ x^2+(k-1)*x-5=0\\\\5^2+(k-1)*5-5=0\\\\5*(k-1)+20=0\\\\k-1=\dfrac{-20}{5} \\\\k=-4+1\\\\\boxed{k=-3}\\](https://tex.z-dn.net/?f=5%5C%20is%5C%20a%20%5C%20root%20%5Cof%20%5C%20x%5E2%2B%28k-1%29%2Ax-5%3D0%5C%5C%5C%5C5%5E2%2B%28k-1%29%2A5-5%3D0%5C%5C%5C%5C5%2A%28k-1%29%2B20%3D0%5C%5C%5C%5Ck-1%3D%5Cdfrac%7B-20%7D%7B5%7D%20%5C%5C%5C%5Ck%3D-4%2B1%5C%5C%5C%5C%5Cboxed%7Bk%3D-3%7D%5C%5C)
h+1 is thus a root of x²+(-3-1)*x-5=0
x²-4x-5=0
x²+x-5x-5=0
x(x+1)-5(x+1)=0
(x+1)(x-5)=0
h+1=-1
<u>h=-2</u>
Since 50% are grade 6 and 0.3 from 5th grade these equal 8/10 so the fraction of participants from grade 7 would be 2/10
Step-by-step explanation:
It is possible
One person will get 246 while the other will get 266 = 512
Answer:
40
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
8 ÷ 2(3 + 7)
<u>Step 2: Evaluate</u>
- (Parenthesis) Add: 8 ÷ 2(10)
- Divide: 4(10)
- Multiply: 40