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
Lena [83]
4 years ago
13

It’s moving day and Lydia has packed her books into a large and small boxes. The large boxes hold 35 book and the small ones hol

d 20 books. She packed her 420 books into 18 boxes. How many are large and how many are small
Mathematics
1 answer:
Natali5045456 [20]4 years ago
5 0

Answer:

4 large , 14 small

Step-by-step explanation:

35*x +20*(18-x)=420

35x +360-20x=420

35x-20x=420-360=60

15x= 60

x =4

4 large  14 small

You might be interested in
Find the matrix product, if possible.  Show your work please
steposvetlana [31]
\left[\begin{array}{ccc}-1&3\\5&4\end{array}\right] \cdot  \left[\begin{array}{ccc}0&-2&6\\1&-3&2\end{array}\right]\\\\=  \left[\begin{array}{ccc}(-1)(0)+(3)(1)&(-1)(-2)+(3)(-3)&(-1)(6)+(3)(2)\\(5)(0)+(4)(1)&(5)(-2)+(4)(-3)&(5)(6)+(4)(2)\end{array}\right]\\\\=  \left[\begin{array}{ccc}0+3&2-9&-6+6\\0+4&-10-12&30+8\end{array}\right]\\\\  =\left[\begin{array}{ccc}3&-7&0\\4&-22&38\end{array}\right]

3 0
3 years ago
Find the length of AD in the diagram shown.
Sophie [7]
No diagram :(
can you upload a picture so we can help out or a description? thanks!
5 0
3 years ago
The radius of a cylindrical water tank is 5.5 ft, and its height is 13 ft. What is the volume of the tank?
mezya [45]

Answer:

1235 ft³

Step-by-step explanation:

Volume of a Cylinder: 2πr²*h

π = 3.14

r = 5.5 ft

h = 13 ft

Volume = 2(3.14)(5.5)²*13 = 1235.43 ft³

Rounded to nearest whole number

Volume of the Cylindrical Water tank is 1235 ft³

7 0
4 years ago
What is the value of 5^3i^9?
Yakvenalex [24]

Answer:

\displaystyle 125^i

Step-by-step explanation:

<u>Extended Information </u><u>on</u><u> </u><u>the</u><u> Complex Number System</u>

\displaystyle \sqrt{-1} = i \\ -1 = i^2 \\ -i = i^3 \\ 1 = i^4\:[all\:multiples\:of\:four]

I am joyous to assist you at any time.

All work is shown above. ↑

4 0
3 years ago
i need help with number 7. its solving systems of equations by substitution. please show work!!! i need help
SIZIF [17.4K]
#7:
<span>Subtract </span>y<span> from both sides:
</span>-4x=6-y

Divide both sides by -4:

Answer:
x= -6-y/4


#7 part 2:

Add <span>y</span><span> to both sides:
</span>-5x=21+y

Divide both sides by -5:

Answer: x=-21+y/5

hope i helped!



7 0
3 years ago
Other questions:
  • Suppose that you wanted to predict the price of a house based on where the house was located (northeast, northwest, southeast, o
    7·1 answer
  • What is the density of a block with a mass of 420 g and a length of 2cm, 3cm wide, and 1cm long​
    8·1 answer
  • Leena thought of a number and divided it by 4. what can she do to get back her original number
    5·1 answer
  • Find the vertex of the following equation. y= -x^2+4x+3
    10·2 answers
  • There's a one time fee of $27 to join the gym the monthly cost of using the gym is $18 write an equation for the relationship th
    9·1 answer
  • What is the answer to this prolem without parenthesis and simplfied <br> (v+7)^2
    12·1 answer
  • Ida pasted a photo of her family into her scrapbook.
    6·1 answer
  • Ten years from now, Abdul will be twice as old as his son pavel ten years ago, Abdul was seven times as old as pavel how old are
    15·1 answer
  • A rectangular park, 90 meters by 60 meters, is to be built on a city block having an area of 9000 m^2. A uniform strip borders a
    15·1 answer
  • A ladder is propped against the side of a building making a 30 degree
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!