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Pie
3 years ago
6

Wilma can mow a lawn in 60 minutes. Melissa can mow the same lawn in 30 minutes. How long does it take for both Wilma and Meliss

a to mow the lawn if they are working together?
Mathematics
2 answers:
nevsk [136]3 years ago
6 0
It is 30 mins because they split the work and the 60 min will be 30 and the 30 min girl would be 15
vichka [17]3 years ago
3 0

Answer:

45

Step-by-step explanation:

60 and half of 60 is 30 and half of 30 is 15 so 30 +15 is 45

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At Harry's discount hardware everything is sold for 20 percent less than the price marked. If Harry buys tool kits for $80,what
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Answer:

$120.

Step-by-step explanation:

The amount he sells the tool kit for  = 80 + 20% of 80

= 80 + 16

= $96.

Let m be the marked price, then

m - 0.20m = 96

0.8m = 96

m = $120.

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3 years ago
Is 26 a perfect square? Why or why not?
VladimirAG [237]
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6 0
3 years ago
Read 2 more answers
The weight of the chocolate and Hershey Kisses are normally distributed with a mean of 4.5338 G and a standard deviation of 0.10
Salsk061 [2.6K]

For the bell-shaped graph of the normal distribution of weights of Hershey kisses, the area under the curve is 1, the value of the median and mode both is 4.5338 G and the value of variance is 0.0108.

In the given question,

The weight of the chocolate and Hershey Kisses are normally distributed with a mean of 4.5338 G and a standard deviation of 0.1039 G.

We have to find the answer of many question we solve the question one by one.

From the question;

Mean(μ) = 4.5338 G

Standard Deviation(σ) = 0.1039 G

(a) We have to find for the bell-shaped graph of the normal distribution of weights of Hershey kisses what is the area under the curve.

As we know that when the mean is 0 and a standard deviation is 1 then it is known as normal distribution.

So area under the bell shaped curve will be

\int\limits^{\infty}_{-\infty} {f(x)} \, dx= 1

This shows that that the total area of under the curve.

(b) We have to find the median.

In the normal distribution mean, median both are same. So the value of median equal to the value of mean.

As we know that the value of mean is 4.5338 G.

So the value of median is also 4.5338 G.

(c) We have to find the mode.

In the normal distribution mean, mode both are same. So the value of mode equal to the value of mean.

As we know that the value of mean is 4.5338 G.

So the value of mode is also 4.5338 G.

(d) we have to find the value of variance.

The value of variance is equal to the square of standard deviation.

So Variance = (0.1039)^2

Variance = 0.0108

Hence, the value of variance is 0.0108.

To learn more about normally distribution link is here

brainly.com/question/15103234

#SPJ1

3 0
11 months ago
A collector's model race car is scaled so that 1 inch on the model equals 6 1/4 feet on the actual car. If the model is 2/3 inch
Alchen [17]
The hight of the real car is 4 1/6 ft.
7 0
3 years ago
Kathleen, Penny, and Megan all order 12-ounce smoothies. After 5 minutes, Kathleen still has 3/4 left, Penny has 5/6 left, and M
____ [38]
Penny has the most left of her smoothie
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the common denominator is 24
convert all the fraction accordingly 
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