To get the area of a square, You just square one side or multiply 2 sides, I'm not sure what the rounding is, but 6.25 times 6.25 is 39.0625
Answer:
a. y = -3x + 5
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Slope Formula: 
Slope-Intercept Form: y = mx + b
- m - slope
- b - y-intercept
Step-by-step explanation:
<u>Step 1: Define</u>
y-intercept (0, 5)
Point (1, 2)
<u>Step 2: Find slope </u><em><u>m</u></em>
Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>
- Substitute [SF]:

- Subtract:

- Divide:

<u>Step 3: Write Equation</u>
<em>Plug in variables into the general form.</em>
y = -3x + 5
Answer:
<h2><u>
104.9</u></h2>
Step-by-step explanation:
To find the circumference of a circle, we need to use the formula which is
C = 2*π*r
Rewrite with radius
C = 2*π*16.7
Solve
C = 2*π*16.7 = 104.876
Now we have to round. Remember, if it is 4 or below round down and if it is 5 or above, round up.
104.876 - 6 is more than 5
104.88 - 8 is more than 5
<u>104.9 is the final answer</u>
Answer:
31.5
Step-by-step explanation:
126/14=g
g=31.5
<h3>
Answer: 36.9 degrees</h3>
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Work Shown:
I'm assuming your teacher meant to say the ramp is 7 meters long and the ramp rises up 4.2 meters. It doesn't make sense the way they phrased it initially since the ramp must be the longest part (it is the hypotenuse of the right triangle).
See diagram below.
The angle of elevation is the angle made between the ramp and the ground. It's the angle amount the ramp tilts upward.
sin(angle) = opposite/hypotenuse
sin(theta) = 4.2/7
sin(theta) = 0.6
theta = arcsin(0.6)
theta = 36.869897645844
theta = 36.9
Note: inverse sine or
is the same as arcsine. Make sure your calculator is in degree mode.