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kozerog [31]
2 years ago
5

PLEASE SOMEONE HELP ME

Mathematics
1 answer:
posledela2 years ago
6 0
My name is Sarai to, lol
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A light bulb consumes 9450 W in five days in six hours how many watt hours does a consume per day?
KengaRu [80]
Well first 9450/5=1890 then 1890/6= 315 watt hours per day
5 0
3 years ago
4) Which number would divide the numerator and the denominator of the first
pav-90 [236]

Answer:

2/2

Step-by-step explanation:

I think so, because 14/2 = 7 and 18/2 = 9

6 0
2 years ago
SAT verbal scores are normally distributed with a mean of 433 and a standard deviation of 90. Use the Empirical Rule to determin
laila [671]

34% of the scores lie between 433 and 523.

Solution:

Given data:

Mean (μ) = 433

Standard deviation (σ) = 90

<u>Empirical rule to determine the percent:</u>

(1) About 68% of all the values lie within 1 standard deviation of the mean.

(2) About 95% of all the values lie within 2 standard deviations of the mean.

(3) About 99.7% of all the values lie within 3 standard deviations of the mean.

$Z(X)=\frac{x-\mu}{\sigma}

$Z(433)=\frac{433-\ 433}{90}=0

$Z(523)=\frac{523-\ 433}{90}=1

Z lies between o and 1.

P(433 < x < 523) = P(0 < Z < 1)

μ = 433 and μ + σ = 433 + 90 = 523

Using empirical rule, about 68% of all the values lie within 1 standard deviation of the mean.

i. e. ((\mu-\sigma) \ \text{to} \ (\mu+\sigma))=68\%

Here μ to μ + σ = \frac{68\%}{2} =34\%

Hence 34% of the scores lie between 433 and 523.

8 0
3 years ago
A nutrition company is marketing a low calorie snack brownie. A serving size of the snack is 3 brownies and has a total of 50 ca
lozanna [386]

Answer:

350 calories

Step-by-step explanation:

divide 50 by 3 then multiply that number by 21.


3 0
3 years ago
Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.
defon
The answer is step 3. Step 2 is suppose to be 3 x 7 and the answer is 21 but he writes 7 in step 4
4 0
3 years ago
Read 2 more answers
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