All categories

3 years ago

HELP ME PPLS I LOVE U <33

Mathematics

1 answer:

S_A_V [24]3 years ago

5 0

Answer:

The surface area is about 395.2 cm^2.

Step-by-step explanation:

S = 2*(6.72*12.7 + 5.78*(6.72 +12.7))

.. = 2*(85.344 +5.78*19.42)

.. = 2*197.5916)

.. = 395.1832

You might be interested in

In one town 44% of all voters are Democrats if two voters are randomly selected for a survey find the probability that they are

kenny6666 [7]

Answer:

0.194

Step-by-step explanation:

Probability that BOTH are democrats means probability of "one being democrat" AND "another also being democrat".

The AND means we need to MULTIPLY the individual probability of a person being democrat.

Probability that a voter is democrat is 44% (0.44) -- stated in the problem

Now, Probability BOTH being Democrats is simply MULTIPLYING 0.44 with 0.44

$0.44*0.44=0.1936$

Rounded to nearest thousandth, 0.194

Last answer choice is correct.

6 0

2 years ago

You have a 10 by 24 piece of cardboard. You are going to cut squares of equal size from each corner, and fold up the sides to ma

densk [106]

Answer:

10-2x

Step-by-step explanation:

If x is the length of one side of the square, the total width of the cardboard has two squares cut from it. The amount of width remaining is the width of the box. Since the original width of the cardboard is 10, the width of the box is ...

10 -2x

8 0

2 years ago

What is the least common denominator for the fractions 5/6 and 4/5 ?

laila [671]

C.30 because if u multiply the denominators you get 30 not the other numbers

5 0

3 years ago

In a population distribution, a score of x=57 corresponds to z=-0.25 and a score of x=87 corresponds to z=1.25. Find the mean an

Serggg [28]

Here is dependence between scores and x-values:

$Z_i=\dfrac{X_i-\mu}{\sigma},$

where $\mu$ is the mean, $\sigma$ is standard deviation and i changes from 1 to 2.

1. When i=1, $Z_1=-0.25,\ X_1=57,$ then

$-0.25=\dfrac{57-\mu}{\sigma}.$

2. When i=2, $Z_2=1.25,\ X_2=87,$ then

$1.25=\dfrac{87-\mu}{\sigma}.$

Now solve the system of equations:

$\left\{\begin{array}{l}-0.25=\dfrac{57-\mu}{\sigma}\\ \\1.25=\dfrac{87-\mu}{\sigma}.\end{array}\right.$

$\left\{\begin{array}{l}-0.25\sigma=57-\mu\\ \\1.25\sigma=87-\mu.\end{array}\right.$

Subtract first equation from the second:

$1.25\sigma-(-0.25\sigma)=87-57,\\ \\1.5\sigma=30,\\ \\\sigma=20.$

Then

$1.25=\dfrac{87-\mu}{20},\\ \\87-\mu=25,\\ \\\mu=87-25=62.$

Answer: the mean is 62, the standard deviation is 20.

3 0

3 years ago

Read 2 more answers

Clive is making hamburgers for a cookout. How many 1/4- pounds hamburgers can he make from 2 and 3/4 pounds of ground beef

marshall27 [118]

Answer:

11 1/4- pounds hamburgers can be made from 2 and 3/4 pounds of ground beef.

Step-by-step explanation:

Here, the amount of beef uses in 1 hamburger = 1/4 pound = 0.25 pounds

Total amount of beef available = 2 3/4 pounds

Now, solving the mixed fraction,we get

$2\frac{3}{4} = 2 + \frac{3}{4} = 2 + 0.75= 2.75$

So, the total available beef = 2.75 pounds

Now, $\textrm{ Number of burgers made} = \frac{\textrm{Weight of available beef}}{\textrm{Beef used in 1 hamburger}}$

= $\frac{2.75}{0.25} = 11$

So, the total number of hamburgers made = 11

Hence, 11 1/4- pounds hamburgers can be made from 2 and 3/4 pounds of ground beef.

3 0

3 years ago