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
Dennis_Churaev [7]
3 years ago
14

CAN SOMEONE PLEASE HELP ME!!!!!

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0

Answer:

Step-by-step explanation:

2{5x²-15+(-9xy²)}-(2y²+4x-xy²)+3x²

=2{5x²-15-9xy²}-(2y²+4x-xy²)+3x²

=10x²-30-18xy²-2y²-4x+xy²+3x²

=13x²-2y²-17xy²-4x-30

You might be interested in
Children who have lost some baby teeth have better arithmetic skills than children who have not lost any baby teeth. In fact, th
alisha [4.7K]
There is no coordination on a baby losing his teeth it just happens
7 0
3 years ago
A carton has a length of 22/3 feet, width of 11/8 feet, and height of 11/5 feet, What is the volume of the carton?​
cupoosta [38]

Length of a carton :

=  \frac{22}{3}  \: feet

Width of the carton :

=  \frac{11}{8}  \: feet

Height of the carton :

=  \frac{11}{5}  \: feet

Volume of the carton :

= Length × Width × Height

=  \frac{22}{3}  \times  \frac{11}{8}  \times  \frac{11}{5}

=   \frac{2622}{120}

\color{hotpink} =  21.85 \: feet

Therefore, the volume of the carton = 21.85 feet.

7 0
3 years ago
An empty cylindrical vase with a radius of 8 cm and a height of 9 cm is filled with 6 cm^3 of sand every 15 seconds. At the same
Andru [333]

General Idea:

The volume of cylinder is given by \pi r^{2} h, where r is the radius and h is the height of the cylinder.

Applying the concept:

Step 1: We need to find the volume of full cylinder with the given dimensions using the formula.

Volume of full cylinder =\pi r^{2} h=\pi* 8^{2} *9=576\pi cm^{3}

Volume of half cylinder =\frac{576\pi }{2} =288\pi cm^{3}

Step 2: Let x be the number of minutes of filling the sand.

6 cm^{3} of sand filled every 15 seconds, there are four 15 seconds in a minute.

So volume of sand filled in 1 minute= 6*4 cm^{3} = 24 cm^{3}.

8 cm^{3} of sand taken out of cylindrical vase every minute.

Net volume of sand filled in 1 minute = Volume of sand filled in the vase in one minute - Volume of sand taken out in 1 minute

Net volume of sand filled in 1 minute=24 cm^{3} - 8cm^{3}=16cm^{3}

Volume of sand filled in x minutes = 16x.

We need to set up an equation to find the number of minutes need to fill half the volume in cylindrical vase.

16x = 288\pi \\ \\ x=\frac{288\pi}{16}  \\ \\ x=18\pi \\ \\ x=57 minutes

Conclusion:

The number of minutes required for the base be half filled with sand is 57

6 0
3 years ago
Emma needed a loan of $400 for repairs to her house. The bank loaned her the money at 5.6% interest for 3 years. What is the tot
Mila [183]

Answer: $67.20

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I need help ASAP.........
aliina [53]

Answer:

it will take 20 minutes for her to weed all of her garden

Step-by-step explanation:

8 minutes=40%   16 minutes= 80%  20 minutes=100%

plz mark brainliest

7 0
3 years ago
Read 2 more answers
Other questions:
  • How do i factor 2x^2+11x+5
    7·2 answers
  • The quantity demanded x of a certain brand of DVD player is 3000/week when the unit price p is $485. For each decrease in unit p
    14·1 answer
  • 375 = 3 x 5 x 5 x 5 =
    15·1 answer
  • Write standard form 6hundred millions 4ten millions 3millions 6tens2ones
    15·1 answer
  • A population of rabbits reproduces at an alarming rate of tripling each Month.How many rabbits will there be after 7 months if t
    10·2 answers
  • What’s the surface area of the figure
    6·2 answers
  • {4x+2y=10<br> {2x+47=14<br> Solve by elimination
    10·1 answer
  • Marjorie drops an object from a height of h meters, and it hits the ground with a velocity of v m/s, as given by the function v
    10·1 answer
  • Lol I need help with this one too
    8·1 answer
  • R,u,t,s are positive <br><br> RXS=15<br> SXT=3<br> TXV=7<br> RXV=??
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!