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kirill [66]
3 years ago
8

A jar contains 21 pennies (worth $0.01 each), 15 nickels (worth $0.05 each), 18 dimes (worth $0.10 each), and 32 quarters (worth

$0.25). if a coin is drawn at random, what is the expected value of the draw?
Mathematics
1 answer:
Lapatulllka [165]3 years ago
4 0
Less than 25 bro.............
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PLEASE HELP!!!!! AND TAHNK YOU
Anarel [89]

Answer:

a= 68% times 250, there are 170 students not in Advanced

Step-by-step explanation:

If 32% are in Adv math, 68% aren't, to solve a percentage, I did

.68 times 250

6 0
3 years ago
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Round 2. 873 to the nearest tenth
PtichkaEL [24]
2.873 ≈2.9 (nearest tenth)
6 0
3 years ago
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Im giving 30 points pls help
gayaneshka [121]

Step-by-step explanation:

Pathagory and Theorem

a^2+b^2=c^2

(x-3)^2+(x-4)^2=6^2

expand:

2x^2-14x+25=36

2x^2-14x-11=0

x=(\sqrt{71}+7)/2

perimeter=(x-3)+(x-4)+6=2x-1

insert the value for x into 2x-1

\sqrt{71}+6=perimeter

Hope that helps :)

7 0
3 years ago
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If the value of y varies directly with x and y= -1 when x=3, find y if x=9
Zolol [24]

y = - 3

Since y varies directly as x then

y = kx ← ( k is the constant of variation )

to find k use y = - 1 when x = 3

k = \frac{y}{x} = \frac{-1}{3} = - \frac{1}{3}

hence y = - \frac{1}{3} x

when x = 9, then

y = - \frac{1}{3} × 9 = - 3


4 0
3 years ago
Please help, the question is in the picture.
Talja [164]

Step-by-step explanation:

answer is first option,,,

6 0
2 years ago
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