It is most likely the mean. Because the mean is the center of the data
Answer:
324 cm²
Step-by-step explanation:
→ Work out perimeter of square
72 + 72 + 72 + 72 = 288
→ Work out the width of the rectangle
288 - (90 × 2) = 108
108 ÷ 2 = 54
→ Work out area of square
72 × 72 = 5184 cm²
→ Work out area of rectangle
90 × 54 = 4860 cm²
→ Minus the areas from each other
5184 cm² - 4860 cm² = 324 cm²
Paula needs a total of 1.47 meters of ribbon to cover the entire perimeter of her painting.
Each piece of ribbon is 25 centimeters long.
To find how many pieces Paula needs, convert the meters to centimeters and divide.
1.47 meters = 147 centimeters
Paula needs 147 centimeters of ribbon.
Divided 147 by 25 to find how many 25 cm long pieces of ribbon Paula needs.
147 / 25 = 5.88
Paula needs 5.88 pieces of ribbon.
Since you can't buy just 0.88 piece of a ribbon, you need to buy a full one and just be left with some leftovers, like remainders.
This means Paula needs 6 ribbon pieces.
Hope this helps!
Answer:
<em>The porch is 7.35 feet off the ground</em>
Step-by-step explanation:
<u>Trigonometric Ratios</u>
The ramp, the height of the porch, and the distance from the base of both form a right triangle where trigonometric ratios can be applied.
The angle of 20° has the height of the porch H as the opposite side, and the hypotenuse is the length of the ramp.
The sine is defined as:
![\displaystyle \sin\theta=\frac{\text{opposite leg}}{\text{hypotenuse}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csin%5Ctheta%3D%5Cfrac%7B%5Ctext%7Bopposite%20leg%7D%7D%7B%5Ctext%7Bhypotenuse%7D%7D)
For our problem:
![\displaystyle \sin 20^\circ=\frac{H}{21.5}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csin%2020%5E%5Ccirc%3D%5Cfrac%7BH%7D%7B21.5%7D)
Solving for H:
![H=21.5\cdot \sin 20^\circ](https://tex.z-dn.net/?f=H%3D21.5%5Ccdot%20%5Csin%2020%5E%5Ccirc)
Find the sine of 20° by using a calculator:
![H=21.5\cdot 0.342](https://tex.z-dn.net/?f=H%3D21.5%5Ccdot%200.342)
H=7.35 feet
The porch is 7.35 feet off the ground