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
In-s [12.5K]
2 years ago
14

Marissa’s fish tank need to be filled with more water

Mathematics
1 answer:
goldenfox [79]2 years ago
3 0
What is the question?
You might be interested in
I need a this for tomorrow. To confusing
DaniilM [7]

Answer:

2390.7 square meters

Step-by-step explanation:

(semicircle area) 30.5/2 = 15.4

15.4 x 15.4

= 232.5625 x 3.14

= 730.24625 x 2 = 1460.4

(square area) 30.5 x 30.5 = 930.25

930.25+ 1460.4= 2390.7 square meters

you may want to double check the answer however

7 0
3 years ago
URGENT!!!!! 20 POINTS! Kara is graphing the equation |x| + |y| = a , where a​ is a real number.
beks73 [17]

Answer:

Step-by-step explanation:

a=0 if both x and y are each =0

for all other real values a>0

7 0
3 years ago
Read 2 more answers
_x_=-0.75 The two rational numbers have to have what in common?
vitfil [10]

Answer:

-3:4 is The two rational numbers have to have in common.

7 0
2 years ago
What is -7.6 increased by 9?
Solnce55 [7]

Answer:

-7.6+9=1.4

Step-by-step explanation:

increased by is addition

6 0
2 years ago
"A 12​-foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from t
Svet_ta [14]

Answer:

Step-by-step explanation:

The question has typographical errors. The correct question is:

"A 12​-foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 3 ​feet/second, how fast is the top of the ladder moving down when the foot of the ladder is 5 feet from the​ wall?

Solution:

The ladder forms a right angle triangle with the ground. The length of the ladder represents the hypotenuse.

Let x represent the distance from the top of the ladder to the ground(opposite side)

Let y represent the distance from the foot of the ladder to the base of the wall(adjacent side)

The bottom of the ladder is sliding along the pavement directly away from the building at 3ft/sec. This means that y is increasing at the rate of 3ft/sec. Therefore,

dy/dt = 3 ft/s

The rate at which x is reducing would be

dx/dt

Applying Pythagoras theorem which is expressed as

Hypotenuse² = opposite side² + adjacent side², it becomes

x² + y² = 12²- - - - - - - -1

Differentiating with respect to time, it becomes

2xdx/dt + 2ydy/dt = 0

2xdx/dt = - 2ydy/dt

Dividing through by 2x, it becomes

dx/dt = - y/x ×dy/dt- - - - - - - - - - 2

Substituting y = 5 into equation 1, it becomes

x² + 5 = 144

x² = 144 - 25 = 119

x = √119 = 10.91

Substituting x = 10.91, dy/dt = 3 and y = 5 into equation 2, it becomes

dx/dt = - 5/10.91 × 3

dx/dt = - 1.37 ft/s

7 0
3 years ago
Other questions:
  • Marianne has been collecting donations for her biscuit stall at the school summer fayre. There are some luxury gift tins of bisc
    9·2 answers
  • you are going on a road trip over a distance of 3000 kilometers with three friends. the car consumes 6 liters of gas per 100 kil
    5·1 answer
  • The first two terms of a sequence are 4 and 12.   If the sequence is arithmetic, what is the next term?   If the sequence is geo
    12·1 answer
  • simple interest = P × r × t Dave has a three–year college loan for $10,000. The lender charges a simple interest rate of 6 perce
    15·2 answers
  • Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.
    11·2 answers
  • A 2-quart carton of frozen yogurt costs $10:88. What is price per cup?
    8·1 answer
  • A factory uses 3/8 of a barrel of raisins in each batch of granola bars. Yesterday, the factory used 3/4 of a barrel of raisins.
    11·1 answer
  • Find the value of x to the nearest degree.
    6·1 answer
  • Please it’s a quick yes or no
    9·1 answer
  • How can I solve this trig identity manipulating tan instead of the right side?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!