Answer:
The answer to your question is He must get 80%
Step-by-step explanation:
Data
Scores 55%, 78%, 84%, 93% and X
Average 80%
Process
1.- Write a equation to solve this problem
- There are five scores
Score 1 = S1 = 55
Score 2 = S2 = 78
Score 3 = S3 = 84
Score 4 = S4 = 93
Score 5 = S5 = X
Equation
Average = (S1 + S2 + S3 + S4 + S5) / 5
- Solve for S5
5 Average = S1 + S2 + S3 + S4 + S5
S5 = 5 Average - S1 - S2 - S3 - S4
- Substitution
S5 = 5(80) - 55 - 78 - 84 - 93
- Simplification
S5 = 400 - 310
- Result
S5 = 90
Square root is not defined to for negative values. For negative values, the answer of square root is a complex number which is not in Real Domain.
So any such values, for which the expression is not defined are not in the Domian. So the domian of square root of x will be All real numbers greater than or equal to 0.
This can be expressed as:
[0 , ∞)
or
x ≥ 0
Answer:
Slope, Angle, & Distance:
Slope: 0.5625
The slope of the line connecting (15, 20) and (-1, 11) is 0.5625
Slope (m): 0.5625
Angle (θ): 29.3578°
Distance: 18.3576
Δx: 16
Δy: 9
Slope Intercept Form:
(y = mx + b)
y = 0.5625x + 11.5625
Step-by-step explanation:
Steps to Find Slope
Start with the slope formula
m=
(y2 - y1)
(x2 - x1)
Substitute point values in the formula
m=
(11 - 20)
(-1 - 15)
Simplify each side of the equation
m=
(11 - 20)
(-1 - 15)
=
-9
-16
Solve for slope (m)
m=0.5625
<h2><em><u>
Brainliest?</u></em></h2>
(0, 5) is a solution of the equation.
Step-by-step explanation:
- Step 1: To find an ordered pair, assume x or y to be 0 and solve for the other coordinate.
If x = 0, y = 0 + 5 = 5. Therefore, the ordered pair is (0, 5)
