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
stealth61 [152]
3 years ago
8

a ratio of science books to art books is 2:5. 20 % of the books were unsold and 2240 were sold. total amount of each book?

Mathematics
1 answer:
mash [69]3 years ago
7 0
Science = 512
art = 1,280
You might be interested in
Solve x4 - 11x2 + 18 = 0.
lara31 [8.8K]

Answer:

x=√2, x=-√2, x= 3 and x=-3

Step-by-step explanation:

We need to solve the equation x^4 - 11x^2+18=0  

We can replace x^4 = u^2 and x^2 = u

So, the equation will become

u^2 -11u+18 = 0

Factorizing the above equation:

u^2 -9u-2u+18 =0

u(u-9)-2(u-9)=0

(u-2)(u-9)=0

u=2, u=9

As, u = x^2, Putting back the value:

x^2 =2 , x^2 =9  

taking square roots:

√x^2 =√2 ,√x^2=√9  

x=±√2 , x = ±3

so, x=√2, x=-√2, x= 3 and x=-3

6 0
2 years ago
Read 2 more answers
The width of a rectangle is 2/5 its length. Find the dimensions if the perimeter is 42<br> meters.
Olin [163]

The formula to find the perimeter of a rectangle is P= 2(l+w). By substituting what we now knowin to the equation:

•42=2(l+(2/5l)). We can have width represented at (2/5l) because it’s now 2/5 of the length. Now add them together to get a single coefficient for l.

•42= 2(7/5l). Multiplying 7/5 by 2.

42= (14/5l). Multiplying both sides by the reciprocal of 14/5, which is 5/14, to get l by itself.

•l= 15.

Now that we now know the value of l, we know that the length is 15m. To find the width of the answer, we then multiply 15 by 2/5, which equals 6. Therefore, the only third option is correct because the length is 15m and the width is 6m.

3 0
3 years ago
Help asap please need answer
Helga [31]

Answer:

is this on edulastic? if you have the option check answer put 12 and let me know if it was right please.

4 0
3 years ago
Read 2 more answers
What is the slope of (-2,7); (-5,3)
Vinvika [58]

Answer:

1 1/3

Step-by-step explanation:

m = y2-y1 over x2-x1

3 0
3 years ago
Answer choice D.) is 13/5<br> Please help, 10 points up!
Elan Coil [88]

c                                                                                                                           thats the answer :)


8 0
3 years ago
Other questions:
  • What is negative 12 as a fraction
    12·2 answers
  • If temperature sent of X is 20 what is 23% of X
    14·2 answers
  • Clark and Phil are each running to raise money. The amount of money (y), in dollars, they each raise is based on the distance (x
    14·1 answer
  • The length of a rectangle is six inches more than its width. If the perimeter of the rectangle is 24 inches, find its dimensions
    7·1 answer
  • I need help with this one
    12·1 answer
  • 2.) 3(10x + 9) - 9(3x - 5)<br><br><br> SHOW WORK PLEASE
    13·2 answers
  • josefina likes the service she receives at her favorite cafe and wants to leave an 18% tip. Her bill is 22.00 . how much would s
    8·1 answer
  • Pleaseeee helpp answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!
    12·2 answers
  • I really need help with this question pls help
    8·1 answer
  • PLEASE ME HELP ASAP THANK YOUUU
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!