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
____ [38]
3 years ago
6

I need to know the equations

Mathematics
2 answers:
dem82 [27]3 years ago
4 0
Let l, t, b represent the numbers of lions, tigers, bears, respectively.

2l +3t +3b = 156 . . . . . . . 156 meals per day are supplied
l +t = 3b . . . . . . . . . . . . . . there are 3 times as many great cats as bears
l +t +b = 68 . . . . . . . . . . . there are a total of 68 animals

_____
The last 2 equations tell you
.. 4b = 68
.. b = 17
Subtracting 3 times the last equation from the first gives
.. -l = -48
There are 48 lions, 3 tigers, and 17 bears.
frozen [14]3 years ago
4 0
Let L = number of lions
Let T = number of tigers
Let B = number of bears

If one lion eats 2 meals per day, then L number of lions eat 2L meals per day.
Tigers eat 3T meals per day, and bears eat 3B meals per day.

In one day, all animals combined ate 156 meals.

That gives us our first equation.

2L + 3T + 3B = 156

The lions and tigers are considered great cats. The bears are not cats.
There are 3 times as many great cats as bears.
This gives us our second equation.

L + T = 3B

In all there are 68 animals in the zoo.
From here we get our third equation.

L + T + B = 68

Our system of equations is:

2L + 3T + 3B = 156
L + T = 3B
L + T + B = 68

Now we solve the system of equations.

Subtract the second equation from the third equation.

B = -3B + 68

4B = 68

B = 17

Substitute B = 17 into the first and second equations.

2L + 3T + 3B = 156

2L + 3T + 3(17) = 156

2L + 3T + 51 = 156

2L + 3T = 105      New Equation A

L + T = 3B

L + T = 3(17)

L + T = 51   Equation B

Equations A and B have only two variables, so we can solve them as a system of two equations in two unknowns.

2L + 3T = 105
L + T = 51

Rewrite equation A. Multiply Equation B by -2 and write underneath Equation A. Then add the equations.

       2L + 3T = 105
+    -2L - 2T = -102
-------------------------
                T = 3

Now use B = 17 and T = 3 in the original third equation to solve for L.

L + T + B = 68

L + 3 + 17 = 68

L + 20 = 68

L = 48

Answer: There are 48 lions, 3 tigers, and 17 bears

Check:
"Lions eat 2 meals per day, tigers and bears eat 3 meals each per day."
Number of meals:
2 * 48 + 3 * 3 + 3 * 17 = 96 + 9 + 51 = 156

"There are 3 times as many great cats in the zoo as bears."
48 + 3 = 51, and 51 is 3 times 17

"There are 68 animals in the zoo."
48 + 3 + 17 = 68

All statements are satisfied by our solution, so the answer above is correct.
You might be interested in
Write an equation for an ellipse centered at the origin, which has foci at (\pm\sqrt{8},0)(± 8 ​ ,0)(, plus minus, square root o
Alchen [17]

Answer:

The equation of ellipse centered at the origin

\frac{x^2}{18} +\frac{y^2}{10} =1

Step-by-step explanation:

given the foci of ellipse (±√8,0) and c0-vertices are (0,±√10)

The foci are (-C,0) and (C ,0)

Given data (±√8,0)  

the focus has x-coordinates so the focus is  lie on x- axis.

The major axis also lie on x-axis

The minor axis lies on y-axis so c0-vertices are (0,±√10)

given focus C = ae = √8

Given co-vertices ( minor axis) (0,±b) = (0,±√10)

b= √10

The relation between the focus and semi major axes and semi minor axes are c^2=a^2-b^2

      a^{2} = c^{2} +b^{2}

a^{2} = (\sqrt{8} )^{2} +(\sqrt{10} )^{2}

a^{2} =18

a=\sqrt{18}

The equation of ellipse formula

\frac{x^2}{a^2} +\frac{y^2}{b^2} =1

we know that a=\sqrt{18} and b=\sqrt{10}

<u>Final answer:</u>-

<u>The equation of ellipse centered at the origin</u>

<u />\frac{x^2}{18} +\frac{y^2}{10} =1<u />

                                   

8 0
3 years ago
Read 2 more answers
What would this be using a positive exponent?
tatuchka [14]

1 / 9^4 and 1 / 6^3

This is because in order to make a negative exponent into a postive exponent, you need to make it into a fraction, 1 as the top number, and the negative exponent as a postive one.

For example, 6^-3 becomes 1 / 6^3.

I hope I helped.

5 0
3 years ago
What is 95x9 divided by 14?
SIZIF [17.4K]

Answer:

213.75

Step-by-step explanation:

95×9=855

855÷4=213.75

3 0
1 year ago
PLEASE HELP ME WITH MY MATH ;-; if you help I will give you 5 stars, a thanks, and a brainliest
VikaD [51]

Answer:

a) <abg

b) 30 degrees

c) 90 degrees

d) <agb to <akc

5 0
2 years ago
You and your friends decide to take a survey to try to convince mall managers to add a new store. You split up to survey parts A
svetlana [45]
33.3 percent or 33 and 1/3
6 0
3 years ago
Read 2 more answers
Other questions:
  • A card is drawn at random from a well-shuffled deck of 52 cards. what is the probability of drawing a face card or a 6?
    5·1 answer
  • A. Solve the two problems
    11·1 answer
  • 32 tens is the same as what
    8·1 answer
  • in one region, the September energy consumption levels for single-family homes are found to be normally distributed with a mean
    13·1 answer
  • Pluto is approximately 2.7 miles from the Sun.
    5·2 answers
  • What is the apparent solution to the system in the graph
    12·1 answer
  • <img src="https://tex.z-dn.net/?f=x%5E%7B-2%7D%20-4x%5E%7B-1%7D%20-3%3D0" id="TexFormula1" title="x^{-2} -4x^{-1} -3=0" alt="x^{
    9·2 answers
  • Please help I don’t know the answer
    11·2 answers
  • School health records show that 70% of the
    14·2 answers
  • 2x+3(2)=4 solving system of equations
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!