Question Help A tourist asked a zookeeper how many birds and lions are in the zoo. The zookeeper replied there are 32 heads and 102 feet. Find the number of each.

Answers

Answer 1
let number of lions be l and number of birds be b.

l + b = 32
4l + 2b = 102....(1)
multiply first equation by 2
2l + 2b = 64.....(2)
Subtract   (1) - (2)i is
2l = 38
l = 19

b = 32-19 = 13

There are 19 lions and 13 birds.

Answer 2

Final answer:

By setting up and solving a system of equations, we find that there are 13 birds and 19 lions in the zoo.

Explanation:

To solve the problem of determining the number of birds and lions in the zoo given 32 heads and 102 feet, we can set up a system of equations. Birds have 2 feet, and lions have 4 feet. Let B represent the number of birds and L represent the number of lions.

Equations:

B + L = 32 (total heads)

2B + 4L = 102 (total feet)

Solving this system, we'll first multiply the first equation by 2 to facilitate elimination:

2B + 2L = 64

2B + 4L = 102

Subtracting the first modified equation from the second equation gives us 2L = 38, so L=19. Substituting L=19 into the first equation, we find B = 32 - 19 = 13.

Therefore, there are 13 birds and 19 lions in the zoo.


Related Questions

Gail ordered 5,675 pounds of flour for the bakery. The flour comes in 25-pound bags. How many bags of flour will the bakery receive?

Answers

5675/25 = 227


227 bags is your answer

hope this helps

circle theorem - easy work

Answers

angle in a semi circle is 90°
<a = 180-90-<b = 90-28 = 62°

opposite angles of a cyclic quadrilateral sums up to 180°
<b + <a = 180
<b = 180-62
<b = 118°

The expression y2 – 10y + 24 has a factor of y – 4. What is another factor of y2 – 10y + 24? y – 20 y – 14 y – 8 y – 6

Answers

Answer:

(y-6)

Step-by-step explanation:

[tex]y^2 - 10y + 24[/tex]

We need to find out two factors whose product is 24 and sum is -10

-6  times -4 = 24

-6  +    -4 = -10

So two factors are -6  and -4

We write the factors inside the parenthesis

(y-6) (y-4)

Factor (y-4) is already given

So another factor is (y-6)



Final Answer:

y - 6

Explanation:

To find another factor of the quadratic expression (y^2 – 10y + 24) given that (y – 4) is one factor, we need to perform factorization. Let's find the factors of the constant term, 24, which when added together give us the coefficient of the middle term, which is –10.
The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, and 24.
We are looking for two factors of 24 that add up to –10, and since one of the given factors is (y – 4), we are specifically looking for factors that would give us ((y - 4)) when multiplied by a binomial of the form (y - n), where (n) represents the other factor.
Now, notice that the factors 6 and 4 add up to 10, and when multiplying two binomial factors, we actually find such that when expanded they give us the original quadratic expression. In this case, (6 times 4 = 24), and (-6 + (-4) = -10), which are our constant and coefficient of \(y\), respectively.
Therefore, we can write the quadratic expression as the product of two binomial expressions: ((y - 6)(y - 4))
Since we are already given that \(y - 4\) is a factor, the other factor must be (y - 6).

Which answer shows these decimals written in order from greatest to least?   76.493   79.2    76.81        A. 79.2 > 76.493 > 76.81   B. 76.81 > 76.493 > 79.2   C. 79.2 > 76.81 > 76.493   D. 76.493 > 79.2 > 76.81

Answers

The answer is C 79.2 > 76.81 > 76.493

Find the median of the following data set. 1 1/4,5/8 ,3/5 ,1/2 ,1 1/2, 1 3/4
5/6
7/8
15/16

Answers

first we have to put the numbers in order

1/2, 3/5, (5/8, 1 1/4), 1 1/2, 1 3/4

the median is the middle number. when there is an odd number of numbers, u will have 1 middle number. But when there is an even number of numbers, like this one, there will be 2 middle numbers. So u have to take ur 2 middle numbers, add them, then divide them by 2 to get the average median.

are 2 middle numbers are : 5/8 and 1 1/4..

(5/8 + 1 1/4) / 2 = (5/8 + 5/4) / 2 = (5/8 + 10/8) / 2 = 
(15/8) / 2 = 15/8 * 1/2 = 15/16 <==

Answer:

Step-by-step explanation:

answer is 15/16

Find the volume of the solid that lies under the hyperbolic paraboloid z = 4 + x 2 − y 2 and and above the square r = [−1, 1] × [0, 2].

Answers

[tex]\displaystyle\int_{x=-1}^{x=1}\int_{y=0}^{y=2}(4+x^2-y^2)\,\mathrm dy\,\mathrm dx=12[/tex]

The volume of the solid under the hyperbolic paraboloid [tex]z = 4 + x^2-y^2[/tex] and above the square r = [−1, 1] × [0, 2] is [tex]20\text{ cubic units}[/tex]

The question is asking us to find the volume bounded by the following surfaces

The plane [tex]z=0[/tex] and the surface [tex]z = 4 + x^2 - y^2[/tex]The planes [tex]x=-1[/tex] and [tex]x=1[/tex]The planes [tex]y=0[/tex] and [tex]y=2[/tex]

To do this, we have to evaluate the triple integral

[tex]\displaystyle \int\limit_0^2\,dx \int\limit_{-1}^1\,dy\int\limit_0^{4+x^2-y^2}\,dz[/tex]

Evaluating the triple integral

First, we integrate with respect to [tex]z[/tex]

[tex]\displaystyle \int\limit_0^2\,dx \int\limit_{-1}^1\,dy\int\limit_0^{4+x^2-y^2}\,dz\\\\=\displaystyle \int\limit_0^2\,dx \int\limit_{-1}^1\,dy(4+x^2-y^2)[/tex]

Next, we integrate with respect to [tex]y[/tex]

[tex]\displaystyle \int\limit_0^2\,dx \int\limit_{-1}^1\,dy(4+x^2-y^2)\\\\=\displaystyle \int\limit_0^2\,dx \left[4y+x^2y-\dfrac{y^3}{3} \right]_{-1}^1\\\\=\displaystyle \int\limit_0^2\,dx \left[ \left(4(1)+x^2(1)-\dfrac{(1)^3}{3} \right)- \left(4(-1)+x^2(-1)-\dfrac{(-1)^3}{3} \right)\right]\\\\=\displaystyle \int\limit_0^2\,dx \left(\dfrac{22}{3}+2x^2 \right)\\\\[/tex]

Finally, we integrate with respect to [tex]x[/tex]

[tex]\displaystyle \int\limit_0^2\,dx \left(\dfrac{22}{3}+2x^2 \right)\\\\=\left[\dfrac{22}{3}x+\dfrac{2x^3}{3}\right]_0^2\\\\=\left(\dfrac{22}{3}(2)+\dfrac{2(2)^3}{3}\right) - \left(\dfrac{22}{3}(0)+\dfrac{2(0)^3}{3}\right)\\\\=20 \text{ cubic units}[/tex]

The volume of the solid is [tex]20\text{ cubic units}[/tex]

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Last year, a janitorial supervisor had a gross income of $34,100, of which he contributed 8% to his 401(k) plan. If he got paid bimonthly, how much was deducted from each paycheck for his 401(k) plan?

A.389.71
B.227.31
C.52.46
D.113.67

Answers

there was a gross income of 34,100....8% goes to 401K plan..
8% of 34,100 = 0.08(34,100) = 2728

he gets paid bimonthly...so he gets paid twice a month...and being that there is 12 months in a year, he gets paid (12 * 2) = 24 times

2728/24 = 113.666 rounds to 113.67 each paycheck <==

If the gross income is $34,100,113.67 was deducted from each paycheck for his 401(k) plan.

What is the percentage?

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

The usage of percentages is widespread and diverse. For instance, numerous data in the media, bank interest rates, retail discounts, and inflation rates are all reported as percentages. For comprehending the financial elements of daily life, percentages are crucial.

It is given that last year, a janitorial supervisor had a gross income of $34,100 of which he contributed 8% to his 401(k) plan.

As a result,

=8% of 34,100

=0.08(34,100)

=2728

Given that there are 12 months in a year and he is paid every two months, or twice a month, for a total of 24 payments,

=2728/24

= 113.666

Thus, if the gross income is $34,100,113.67 was deducted from each paycheck for his 401(k) plan.

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you are converting 68km to meters and your answer is 0.068 m explain why the answer is incorrect

Answers

The answer is incorrect because there are 1000 meters in 1 kilometer, not 1000 kilometers in a meter, the answer should've been 68 times 10^3 which makes it 6,800 meters.
Final answer:

The conversion of 68 kilometers into meters gives 68000 meters, not 0.068 meters. The error arises due to dividing instead of multiplying the kilometers by 1000 (because 1 km equals 1000m).

Explanation:

When you are converting from kilometers to meters, you need to understand that 1 kilometer is equal to 1000 meters. Therefore, to convert 68 kilometers to meters, you should multiply 68 by 1000, not dividing it. You calculate 68km * 1000 = 68000m. So, 68 kilometers is equal to 68,000 meters, not 0.068 meters. The response 0.068 meters is incorrect because it is vastly smaller than the actual conversion result.

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The diagram represents a triangle that is reduced by a scale factor of 0.4.

What is the height of the original triangle?
0.8 inches
2.4 inches
5 inches
8 inches

Answers

x = height of original triangle

0.4x = 2
x = 2 / 0.4
x = 5 <==

Answer:

The height of the original triangle is [tex]5\ inches[/tex]

Step-by-step explanation:

we know that

The scale factor is equal to divide the length of the corresponding side of the reduced triangle by the length of the corresponding side of the original triangle

Let

z-----> the scale factor

x----->  the length of the corresponding side of the reduced triangle

y-----> the length of the corresponding side of the original triangle

so

[tex]z=\frac{x}{y}[/tex]

in this problem we have

[tex]z=0.4[/tex]

[tex]x=2\ in[/tex] -----> the height of the reduced triangle

substitute and solve for y

[tex]0.4=\frac{2}{y}[/tex]

[tex]y=2/0.4=5\ in[/tex]

What uses numbers, variables and operations symbol?

Answers

Final answer:

Mathematics uses numbers, variables, and operations, particularly in algebraic expressions. An example of this is the equation 5x + 2 = 12, where '5' and '2' are numbers, 'x' is variable, and '+' and '=' are operation symbols.

Explanation:

The subject that uses numbers, variables, and operations is Mathematics. This combination is commonly seen in algebraic expressions. For example, in the equation 5x + 2 = 12, '5' and '2' are numbers, 'x' is a variable, and '+' and '=' are operation symbols. The numbers are used as constants or coefficients, the variable represents an unknown value, and the operations symbols dictate how these elements should interact. Through algebra, we can solve this equation and find the value of the variable 'x'.

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Final answer:

In Mathematics, particularly Algebra, numbers, variables and operation symbols are frequently used. This language is evident in forms like scientific and exponential notation, which are methods to represent large quantities using powers of ten.

Explanation:

The system of using numbers, variables, and operation symbols is commonly seen in Mathematics. In particular, this is prominent in Algebra, where numbers are often represented by variables, and operations like multiplication, division, addition, or subtraction involve these variables. One form of this language includes scientific notation. Scientific notation is a mathematical expression used to represent very large numbers using powers of ten. For instance, 500,000,000 can be written as 5 × 10^8 in scientific notation. Another way to express large quantities is through exponential notation, where the number is represented as a product of two numbers, one of which is a power of ten. Learning and practicing how to use these forms becomes essential for further scientific studies.

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what is the value of-3 2/3÷1/3

Answers

first off, let's convert the mixed fraction to "improper", and then divide then.

[tex]\bf \stackrel{mixed}{3\frac{2}{3}}\implies \cfrac{3\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{11}{3}}\\\\ -------------------------------\\\\ \cfrac{3\frac{2}{3}}{\frac{1}{3}}\implies \cfrac{\quad \frac{11}{3}\quad }{\frac{1}{3}}\implies \cfrac{11}{3}\cdot \cfrac{3}{1}\implies \cfrac{33}{3}\implies 11[/tex]
Let's start by changing -3 2/3 into an improper fraction of -11/3. Now let us set it up: -11/3 ÷ 1/3 which changes to multiplication to : -11/3 • 3/1= -33/3=-11. Soluton is -11.

True or False. If two angles of a triangle are congruent, then the sides opposite those angles are congruent.

Answers

Answer:

  True

Step-by-step explanation:

In simplest terms, if the triangle is ΔABC with ∠B≅∠C, then you can show ΔABC ≅ ΔACB using the ASA congruence theorem. (BC≅CB by the symmetric property). Then AB ≅ AC by CPCTC (corresponding parts of congruent triangles are congruent).

If $6000 is invested at 7% simple interest for 4 months, how much interest is earned?

Answers

You can use the simple interest formula. 
 S = Prt
S = Simple Interest
P = Principle = 6000
r = rate = 7% = .07
t = time = 4

S = 6000 * .07 * 4
S = $1680

What can you say about the continuous function that generated the following table of values?

Answers

Answer:

Option: B is the correct answer.

  B. The function has more than one x-intercept.

Step-by-step explanation:

We are given a table of  values as follows:

            x                    y

           -3                    4

            0                    -3

             1                     2

             5                    0

             11                    7  

As we know that a function is a continuous function this means that the graph first decreases from 4 to -3 ( since at x=-3 we have y=4 and at x=0 we have y= -3) and then it increases from -3 to 7 ( since at x=0 we have y= -3 and at x=11 we have y=7)

Hence, the function will intersect the x-axis two times between x= -3 and x=11.

           Hence, the function has more than one x-intercept.

Answer: The function had more than in intercept,

Step-by-step explanation:

the student council wants to rent a ballroom for the junior prom. the ballrooms rental rate $1500 for 3 h and $125 for each additional half hour. suppose the student council raises $2125. What is the maximum number of hours for which they can rent the ballroom

Answers

1500= 3h
so the equation would be set up as

1500+125x= 2125

subtract 1500 from both sides and you should be left with

125x=625 divide 125 into both sides and you should get a answer of 5 then add the three hours and your final answer will be 8 hours is the maximum


For the given function sin−1(9x + 1), the "inside" function is 9x + 1 and the "outside" function is

Answers

Sin^-1 is inverse function of sin or it's sometimes called arcsin, that is the outside function.
Final answer:

In the function sin⁻¹(9x + 1), the 'outside' function is sin⁻¹(x). This is because it is the function performing an operation on the 'inside' function, which is 9x + 1.

Explanation:

For the function sin−1(9x + 1), the 'inside' function is indeed 9x + 1. The 'outside' function is sin⁻¹(x), also known as the inverse sine or arcsine function. In composite functions, the 'inside' function is the function that is being acted on, while the 'outside' function is the function carrying out the action on the inside function. So here, the action of sine inverse or arcsine is being performed on the 'inside' function 9x + 1.

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In a circle, a central angle whose measure is pi/2 radians intercepts an arc whose length is 3pi/2 centimeters. How many centimeters are in the radius of the circle?

Answers

Attached the solution and work.

The sales tax rate on camping equipment is 7 percent. Olivia will buy a sleeping bag priced at $35.35 and a tent at $52.75. What amount will Olivia spend on the sales tax.

Answers

The sales tax is 0.07($35.35 + $52.75) = 0.07 ( $88.10 ) = $6.17.

Find the general solution to y" + 2y' + 17y = 0

Answers


y'' + 2y' + 17y = 0 

y(0) = 1 y'(0) = -1 

Please help me with this question on algebra

Answers

The solution is option D.

  0     4
- 6     1
  3    -4
 
Rember rows times columns.

=>
a11 = 4*0 + 0*(-3) = 0

a12 = 4*1 + 0*1 = 4 + 0 = 4

a21 = -1*0 + 2*(-3) = 0 - 6 = -6

a22 = -1*1 + 2*1 = -1 + 2 = 1

a31 = -3*0 + (-1)*(-3) = 0 + 3 = 3

a32 = -3*1 + (-1)*1 = -3 - 1 = -4

-3(x+4)+15=-12
plz show all work

Answers

-3(x + 4) + 15 = -12

-3(x + 4) = -12 - 15

-3(x + 4) = -27

x + 4 = -27/-3

x + 4 = 9

x = 9 - 4

x = 5

hope that helps, God bless!

At a certain school, 72% of the students play one or more sports. the percentage of students who play one or more sports and who graduate is 67%. find the probability that a student graduates given that the student plays one or more sports.

Answers

The probability that a student graduates given that the student plays one or more sports = probability that students play one or more sports and who graduate/probability that students play one or more sports

  = 0.67 / 0.72

  = 0.9306 (Answer)

You originally draw a design for an art contest on a 4 in. x 5 in. card. The second phase of the contest requires the drawing to be transferred to an 8.5 in x 11 in. standard sheet of paper and utilize as much of the space on the paper as possible. You determine that the largest size one of the dimensions of your drawing can be is 10.5 in. What is the length of the other dimension if the two drawings are similar? Type your exact answer in the blank without the units, and round to the nearest tenths.

Answers

Sent the solution in attachment. Used proportion to solve since the drawing were similar.

Answer:

x = 8.4

Explanation:

A grade has 81 girls and 72 boys. The grade is split into groups that have the same ratio of girls to boys as the whole grade. How many girls are in a group that has 16 boys?

Answers

[tex]\bf \cfrac{girls}{boys}\quad girls:boys\qquad \cfrac{81}{72}\implies \cfrac{9}{8}\qquad \qquad \cfrac{9}{8}=\cfrac{\stackrel{girls}{g}}{\stackrel{boys}{16}}\implies \cfrac{9\cdot 16}{8}=g[/tex]

The number to attended art museum symphony concert rock concerts in events of 1990 compared to the number of words in the same events this year will graph do you use

Answers

where is the graph to use? unsolvable question

deduct 20'x22' from 2240 total space?

Answers

I'm assuming they are all using the same unit for measurement so do 2240-(20x22), 20x22=440, 2240-440=1800
Final answer:

To remove the area of 20'x22' from the total space of 2240 square feet, multiply the dimensions to get the area to deduct, which is 440 square feet. Then subtract this from the total area to find the remaining space, which is 1800 square feet.

Explanation:

To deduct an area of 20 feet by 22 feet from a total space of 2240 square feet, you first need to calculate the area of the space you are removing. To find the area of a rectangle, you multiply its length by its width.

Area to deduct = Length × Width = 20' × 22' = 440 square feet.

Next, subtract the area to deduct from the total space:

Remaining space = Total space - Area to deduct = 2240 sq ft - 440 sq ft = 1800 square feet.

Therefore, you are left with 1800 square feet of space after deducting the area of 20'x22' from the original total space of 2240 square feet.

Solve the absolute value equation. |3x| = 12

Answers

The answer to this is |x| = 4

Explain how you would use addition to find the product of –2 and 5 using the integer tiles and the number line.

Answers

Sent a picture of the solution to the problem (s).

Answer:

Sample Response: With integer tiles, you would add 5 groups of negative 2 tiles or remove 2 groups of 5 positive tiles. On the number line, you would bounce by 5 to the left 2 times.

All real numbers more than 4 units from 6

Answers

2 and 10 are 4 units from 6.

Two sets of real numbers are more than 4 units from 6:  (-inf., 2) and (10, inf.)

How many solutions does 4x+8=2x+7+2x-20 have

Answers

this problem probably has many solutions
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