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3 years ago

You and your friend are planning to walk across an old bridge. The bridge can

Mathematics

2 answers:

Wittaler [7]3 years ago

6 0

Answer:

The bridge can hold 169 pounds

Step-by-step explanation:

675+156=831

1,000-831=169

Burka [1]3 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

The average of 10 numbers is −10. If the sum of 6 of them is 100, what is the average of the other 4? 20pts

Allushta [10]

Answer:

The sum of the other 4 numbers is $-200$

Step-by-step explanation:

Let

x------> the sum of 6 numbers

y-----> the sum of the other 4 numbers

we know that

$\frac{x+y}{10}=-10$ -----> equation A

$x=100$

substitute the value of x in the equation A

$\frac{100+y}{10}=-10$

$\frac{100}{10}+\frac{y}{10}=-10$

$10+\frac{y}{10}=-10$

$\frac{y}{10}=-10-10$

$\frac{y}{10}=-20$

$y=-20*10=-200$

5 0

4 years ago

Read 2 more answers

Stats To quality for a police academy, applicants are given a lest of physical Itness. Ihe scores are normallyDistributed with a

omeli [17]

Since we want just the top 20% applicants and the data is normally distributed, we can use a z-score table to check the z-score that gives this percentage.

The z-score table usually shows the percentage for the values below a certain z-score, but since the whole distribution accounts to 100%, we can do the following.

We want a z* such that:

$P(z>z^*)=0.20$

But, to use a value that is in a z-score table, we do the following:

$\begin{gathered} P(zz^*)=1 \\ P(zz^*)=1-0.20=0.80 \end{gathered}$

So, we want a z-score that give a percentage of 80% for the value below it.

Using the z-score table or a z-score calculator, we can see that:

$\begin{gathered} P(zNow that we have the z-score cutoff, we can convert it to the score cutoff by using:[tex]z=\frac{x-\mu}{\sigma}\Longrightarrow x=z\sigma+\mu$

Where z is the z-score we have, μ is the mean and σ is the standard deviation, so:

$\begin{gathered} x=0.8416\cdot9+64 \\ x=7.5744.64 \\ x=71.5744\cong72 \end{gathered}$

so, the cutoff score is approximately 72.

6 0

1 year ago

If m and n are positive integers such that the greatest common factor of <img src="https://tex.z-dn.net/?f=%20m%5E%7B2%7D%20n%5E

torisob [31]

The greatest common factor of $m^{2} n^{2}$ and $m n^{3}$

is

gcd(m*m*n*n, m*n*n*n) =m*n*n= $m n^{2}$

what we did, was to see how many m's and how many n's, each expression have, and then pick the smallest of each letter (factor).

the reason is that the common factor, must have enough m's and n's to divide the m's and n's of both expressions

so
$45=m n^{2}$
also
$45=5*9=5*3^{2}$

thus, n is equal to 3

Answer: A)3

3 0

3 years ago

a branch of mathematics that deals with the study of collecting, analyzing, interpreting, presenting, and organizing data in a p

saw5 [17]

Answer:

Statistics

Step-by-step explanation:

is the application of probability theory, a branch of mathematics, to statistics, as opposed to techniques for collecting statistical data.
the study and manipulation of data, including ways to gather, review, analyze, and draw conclusions from data.

7 0

2 years ago

Read 2 more answers

64/143 - 21/208 what does it equal to and how?

Arlecino [84]

2 11/78 you just have to simply multiply 64/143 x2 because since it can't be subtracted. And after you multiply 64/143, you just have to subtract normally which is 128-21 and 286-208. Then since your answer came out to an improper fraction, so you have to simplify by dividing 107 divided by 78. Then you will get your answer which is 2 11/78.

5 0

3 years ago