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Jobisdone [24]
2 years ago
6

Which statement is true?

Mathematics
1 answer:
defon2 years ago
7 0

Answer:

B is correct.

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Vending machines can be adjusted to reject coins above and below certain weights. The weights of legal U.S. quarters have a norm
tigry1 [53]

Answer: The percentage of legal quarters will be rejected by the vending machine = 2.275%

Step-by-step explanation:

Given: The weights of legal U.S. quarters have a normal distribution with a mean of 5.67 grams and a standard deviation of 0.07 gram.

Let x be the weights of legal U.S. quarters .

Required probability: P(x5.81)

=P(\dfrac{x-\mu}{\sigma}\dfrac{5.81-5.67}{0.07})\\\\=P(z2)\approx0.02275    \ \ \ [By\  P-value\ calculator]

The percentage of legal quarters will be rejected by the vending machine = 2.275%

5 0
2 years ago
The function y=−0.25x+0.55 represents the percent y (in decimal form) of battery power remaining x hours after you turn on a lap
AURORKA [14]
Answer: a is 2.2, b is 0.55
Explanation:
To find the x intercept, put 0 instead of y,
hence,
0=-0.25x+0.55
-0.25x=-0.55
x=2.2
To find y intercept put 0 instead of x,
so,
y=-0.25*0+0.55
y=0+0.55
y=0.55
3 0
3 years ago
Homework time don’t under stand this •_•||
VARVARA [1.3K]

Answer: so you need to subtract your fractions

Step-by-step explanation: 7/8-5/6=1/24 or 0.042 as a decimal

how to do this is just simplify your answer. I suggest using mathhelper its an amazing app and can show you how to work out problems. I hope i have helped!

5 0
3 years ago
Read 2 more answers
Solve for y <br> 8y – 6=0
IceJOKER [234]
The answer for this question is y= 3/4
6 0
3 years ago
Read 2 more answers
Twice a number is seventy six
AleksandrR [38]
We have an equation: 2*? = 76
⇒ ?= 76/2
⇒ ?= 38

The final answer is 38~
5 0
2 years ago
Read 2 more answers
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