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
sveta [45]
3 years ago
7

An aquarium has a base in the shape of a trapezoid. The base is 90 cm long at the front, 60 cm long at the back, and 30 cm wide

(from front to back). The height is 100 cm. What is the volume of the aquarium in litres?
Mathematics
1 answer:
Nonamiya [84]3 years ago
5 0

Answer:

Step-by-step explanation:

First calculate for the area of the trapezoid (the formula is (base + base / 2) x height):

60 cm + 90 cm = 150 cm

150 cm / 2 = 75 cm

75 cm x 30 cm = 2250 cm²

Now 1 cm² = 1 mL and 1000 mL = 1 L

2250 cm² = 2250 mL

2250 mL = 2.25 L

You might be interested in
Using the information above regarding the proportion of agenda-less meetings, choose the correct conclusion for this hypothesis
ruslelena [56]

Answer: There is sufficient evidence to conclude that the proportion of agenda-less meetings is greater than 45%.

Step-by-step explanation:

Given: H_0:p=0.45 \\ H_a:p>0.45

The p-value for this hypothesis test is 0.025.

The level of significance is α=0.05

As p-value< α  ∵0.025< 0.05

[if p-value< α , we reject H_0]

then, we reject the null hypothesis.

i.e. We have sufficient evidence to support the alternative hypothesis.

Hence, the correct statement is : There is sufficient evidence to conclude that the proportion of agenda-less meetings is greater than 45%.

3 0
4 years ago
Use the frequency table for the ages of recent​ award-winning male actors at the time when they won their award to construct the
Andrew [12]

Answer:

C is the answer here

because here initially zero then increased and then decreased

3 0
3 years ago
Tina buys 3 7_8 yards of material at the fabric store she uses it to make skirt after word she has 1 3_8 left over how many mate
Nikolay [14]
7/8= 0.875
3/8= 0.375
3.875 - 1.375 = 2.5 or 2 1/2 yards.
Therefore, Tina used 2 1/2 yards to make her skirt
7 0
3 years ago
Evaluate the given integral by changing to polar coordinates. sin(x2 y2) dA R , where R is the region in the first quadrant betw
alexira [117]

Answer:

I = 1.47001

Step-by-step explanation:

we have the function

f(x,y)=sin(x^2y^2)\\

In polar coordinates we have

x=rcos\theta\\y=rsin\theta

and dA is given by

dA=rdrd\theta

Hence, the integral that we have to solve is

I=\int \limt_2^4 \int \limit_0^{\pi /2}sin(r^4cos^2\theta sin^2\theta)rdrd\theta

This integral can be solved in a convenient program of your choice (it is very difficult to solve in an analytical way, I use Wolfram Alpha on line)

I = 1.47001

Hope this helps!!!

7 0
3 years ago
Plz do number 4. 5th grade math​
77julia77 [94]

Answer:

your answer would be 78

Step-by-step explanation:

     78

9/702

 - 63

_____

      72

     - 72

_______

 0

4 0
3 years ago
Read 2 more answers
Other questions:
  • The ratio of floor seats to balcony seats and in a theater is 20:1. Does the theater have more floor seats or more balcony seats
    6·2 answers
  • A rectangle has a length of 10cm and a width of 6cm. How long is the diagonal of the rectangle
    5·2 answers
  • Mera painted equal sections of her bedroom wall to make a pattern. She painted 2/5 of the wall white and 1/2 of the wall lavende
    5·1 answer
  • Find the volume of the given prism. Round to the nearest tenth if necessary.
    11·1 answer
  • 3.<br> 27x3+8<br> Type(s): _________
    12·1 answer
  • Which statement is true
    11·1 answer
  • Help Please and thank you
    13·1 answer
  • You and a friend want to know how much rope you need to climb a large rock. Your friend is 5.5 feet tall and casts a shadow that
    6·1 answer
  • 4t- 2=14 what is t<br> Could you please show your work
    10·2 answers
  • HELP PLEASE!!!!!!!!!!!!!!!!!!!! I NEED IT ASAP!!!!!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!