Answer:
a) 14,1 cm
Step-by-step explanation:
If a circle passes through the vertices of a square then the diagonal of a square is a circle diameter.
We use Pytagoras Theorem to find out the length (L) of the diagonal given that:
L² = (20)² + (20)²
L² = 2* (20)²
L = √2 * 20
L = 1,4142* 20
L = 28,28 cm
L diagonal in the square is a diameter of the circle then radius of a circle is:
r = L/2 ⇒ r = 28,28 /2 ⇒ r = 14,14 cm
Let's use the formula to find the perimeter of a rectangle.
2l+2w=120
We know that the length is twice its width; the equation would be:L=2w
We can plug that in to the formula.
2(2w)+2w=120
4w+2w=120
6w=120
120÷6=20=w
Since the length is twice its width, 20×2=40. The length is 40 cm.
The width is 20 cm.
Tell me if this helps!!
fraction form: 8/3 * 5/7 = 1 19/21
1 glove costs $48
5 gloves cost $240 (since 5*48 = 240)
1 bat costs $35
b bats cost 35*b dollars, where b is some positive whole number
The total cost of the bats and gloves is 35*b + 240. We simply add the subtotals (240 from the gloves and 35*b from the bats)
Plug in b = 3 and use PEMDAS to evaluate
35*b + 240
35*3 + 240 .... b has been replaced with 3
105 + 240
345
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To summarize:
The cost expression is 35*b + 240 (the cost is in dollars)
The total cost if the coach bought three bats is 345 dollars
Answer:
33y
Step-by-step explanation:
step 1. 9y+5y+9y=33y
