Answer:
Step-by-step explanation:
let : x The length and y the width you have this system :
xy =60....(1)
x = y+10...(2)
put the value for x in (1): (y+10)y =60
the quadratic equation is : y² +10y - 60 = 0
Δ =b² - 4ac a = 1 b= 10 c= - 60
Δ =10² - 4(1)(-60) = 324 =18²
y 1 = (-10-18)/2 negatif...... refused
y 2 = (-10+18)/2 =4
the width is 4
Answer:
1.2 hours equal to 30mph
Step-by-step explanation:
Pls mark brainliest
Answer:
158 natural numbers
158 natural numbers from 78 to 234, and 699 whole numbers from 24 to 721. Step-by-step explanation: Natural numbers are positive integers (whole numbers), so all numbers from the range of 78 to 234 would be included, including 78 and 234 itself.
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Answer:
9v + 14
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
7v + 2 + 12 + 2v
<u>Step 2: Simplify</u>
- Combine like terms (v): 9v + 2 + 12
- Combine like terms (Z): 9v + 14
Answer:
A
Step-by-step explanation:
Difference between (x) & (x')
P - P' = (2 - (-6) , 2 - 2) = (-8,0)
Q - Q' = (5 - (-3), 2 - 2) = (-8,0)
etc...
Always get (-8,0) hence -8 in x-direction
