1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
grigory [225]
3 years ago
12

a textbook sold a combined total of 391 psychology and biology books in a week. the number of biology books sold was 71 less tha

n the number of psychology books. how many text books of each kind was sold. ​
Mathematics
1 answer:
Hunter-Best [27]3 years ago
7 0

Answer:

320

Step-by-step explanation:

I think you have to subtract the number and I think it will be 320

You might be interested in
5, 392, 029, 004 in word form
Leona [35]
5 billion three-hundred and ninety-two million twenty-nine thousand and four.
5 0
4 years ago
Read 2 more answers
Which expression best estimates 6 and three-fourths divided by 1 and two-thirds? 7 divided by 2 6 divided by 1 8 divided by 3 3
Elodia [21]

Answer:

4\frac{1}{20}

Step-by-step explanation:

6\frac{3}{4} \div 1\frac{2}{3}

\frac{27}{4} \div \frac{5}{3}

\frac{27}{4} \times \frac{3}{5}

\frac{27 \times 3}{4 \times 5}

=\frac{81}{20}

=4\frac{1}{20}

6 0
3 years ago
Read 2 more answers
What is the weight in grams of a liquid that exactly fills a 202.0 mL container if the density of the liquid is
Otrada [13]
The weight of a liquid is: 138.37 grams.

step-by-step explanation:

we are given that the volume of the container=202 ml(milliliter).
also the density of the liquid is given =0.685 grams over milliliter.
we know that the mass or weight of the liquid is given by:
weight=density×volume .
weight=(0.685×202) grams.
weight=138.37 grams.
hence, the weight of liquid that exactly fills a 202.0 milliliter container is 138.37 grams.
8 0
3 years ago
The best player on a basketball team makes 80​% of all free throws. The​ second-best player makes 75​% of all free throws. The​
Artist 52 [7]

Answer:

Expected number of free throws in 60 attempts:

        Best player = 48

        2nd best player = 45

        3rd best player = 42

Step-by-step explanation:

Solution:-

- The probability that best player makes free throw, p1 = 0.8

- The probability that second-best player makes free throw, p2 = 0.75

- The probability that third-best player makes free throw, p3 = 0.70

- Total number of attempts made in free throws, n = 60.

- The estimated number of free throws that any player makes is defined by:

                      E ( Xi ) = n*pi

Where,           Xi = Player rank

                      pi = Player rank probability

- Expected value for best player making the free throws would be:

                    E (X1) = n*p1

                              = 60*0.8

                              = 48 free throws

- Expected value for second-best player making the free throws would be:

                    E (X2) = n*p2

                              = 60*0.75

                              = 45 free throws

- Expected value for third-best player making the free throws would be:

                    E (X3) = n*p3

                              = 60*0.70

                              = 42 free throws

8 0
3 years ago
A distance of 200 meters in 25 seconds is ran what is the average speed of a sprinter
kozerog [31]

Answer:

The average speed of a sprinter would be 8m/s (meters per second).

Step-by-step explanation:

200/25 = 8

4 0
3 years ago
Read 2 more answers
Other questions:
  • When the following fraction is reduced what will be the exponent on the 27 mn^ 3 / 51 m ^ 6 n​
    11·1 answer
  • Evan collected data about the amount of time each student in his math class spends studying. If the range of these data is 2, wh
    8·2 answers
  • The sum of the first 666 terms of a geometric series is 15{,}62415,62415, comma, 624 and the common ratio is 555.
    5·1 answer
  • 40 points!! Find the length of segment ZY in the given triangle.
    14·1 answer
  • If k (x)=-7x+1 find the following <br> K (0)<br> K (-1)<br> K (5)
    9·1 answer
  • Graph f(x) = 8•(1/2)^x
    12·1 answer
  • Which of the following real numbers is NOT and irrational number?
    12·1 answer
  • What is this answer
    8·2 answers
  • I NEEEEEDDDDDDDDD HHHHHHHHHHHHHHHHHHHHHEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLPPPPPPPPPPP!!!!!!!!!!!!!!!! PLEASEEEEEEEEEEEEEEEEEEEEEEEE!
    10·1 answer
  • What is the degree measure of major<br> arc QTS?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!