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mr Goodwill [35]
3 years ago
8

What’s the perimeter

Mathematics
1 answer:
Dafna11 [192]3 years ago
5 0
10+10+10+10= 40
40+38+40+35+35= 188 total perimeter
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One pint of blueberries contains about 80 berries. Lee's fruit salad recipe calls for 20 blueberries per serving. She has all of
DanielleElmas [232]
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3 years ago
If sinA =3/5 and A+B =90 find cosB
-Dominant- [34]

A+B=90^o\to B=90^o-A\\\\\cos B=\cos(90^o-A)=\cos90^o\cos A+\sin90^o\sin A\\\\=\cos A+1\cdot\dfrac{3}{5}=0+\dfrac{3}{5}=\dfrac{3}{5}\\\\\boxed{\cos B=\dfrac{3}{5}}

Used:\\\\\cos(x+y)=\cos x\cos y+\sin x\sin y\\\\\cos90^o=0,\ sin90^o=1

Other method:

Look at the picture.

\sin\theta=\dfrac{opposite}{hypotenuse}\\\\\sin A=\dfrac{3}{5}\to opposite=3\ and\ hypotenuse=5

\cos\theta=\dfrac{adjacent}{hypotenuse}\\\\adjacent=3\ and\ hypotenuse=5\to\cos B=\dfrac{3}{5}

8 0
3 years ago
Joe collected 94 stamps altogether. He collected 27 in April and 34 in May. How many did he collect in June?
stepan [7]

Answer:

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Step-by-step explanation:

From what we know in April and May combined Joe has collected 61 stamps (27+34=61). To then work out how many Joe collected in June you would take the 61 we know he has already got away from the grand total of 94 (94-61=33) this means in June he collects 33 stamps. Hope this helps :)

8 0
2 years ago
Given that events A and B are independent with P(A) = 0.46 and
jok3333 [9.3K]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Find the distance between (4,-3),(3,-8)
WARRIOR [948]
So you just have to use distance formula

8 0
3 years ago
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