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Assoli18 [71]
3 years ago
9

BRAINLIEST TO CORRECT

Mathematics
2 answers:
Fynjy0 [20]3 years ago
7 0
Make the fractions improper:
33/4 + 14/5

Find common denominator:
165/20 + 56/20

Add:
221/20

Answer:
11 1/20
Sunny_sXe [5.5K]3 years ago
5 0

Answer:

11 1/20 or 221/20

Step-by-step explanation:

First, you must get common denominators (20)

1/4= 5/20

4/5= 16/20

then add:

5/20+16/20= 21/20 or 1 1/20

1 1/20+8+2= 11 1/20 or 221/20

Hope this helps! :)

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Jason solved the following equation to find the value for x.
maks197457 [2]

Answer:

Jason can plug what x equals (6.5) back into the equation everywhere x is and solve! If the answers on both sides equal each other (example 3=3) then that means his answer is correct.

Step-by-step explanation:

Facts and math.

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3 years ago
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4 years ago
A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measurin
Ratling [72]

Answer:

The standard deviation of weight for this species of cockroaches is 4.62.

Step-by-step explanation:

Given : A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

To find : What is the approximate standard deviation of weight for this species of cockroaches?

Solution :

We have given,

Mean \mu=50

The sample mean x=55

A lab assistant reports that 14% of the cockroaches weigh more than 55 grams.

i.e. P(X>55)=14%=0.14

The total probability needs to sum up to 1,

P(X\leq 55)=1-P(X>55)

P(X\leq 55)=1-0.14

P(X\leq 55)=0.86

The z-score value of 0.86 using z-score table is z=1.08.

Applying z-score formula,

z=\frac{x-\mu}{\sigma}

Where, \sigma is standard deviation

Substitute the values,

z=\frac{x-\mu}{\sigma}

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\sigma=\frac{5}{1.08}

\sigma=4.62

The standard deviation of weight for this species of cockroaches is 4.62.

4 0
3 years ago
Marshall wrote a total of 8 pages over 4 hours. After spending 7 hours writing this week, how many pages will Marshall have writ
astraxan [27]
8 pages per 4 hrs
2 pages per hour
2 pages per 7 hours
14 pages
7 0
3 years ago
A right cylinder has a diameter of 40 mm and a height of 30 mm, as shown. Semester Test, Part 1 What is the volume of the cylind
sukhopar [10]
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so, the answer is (a)
8 0
3 years ago
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