In a big garden 60% of the trees are coconut trees,25%of the number of coconut trees are mango trees and 20% of the number ofof mango trees are apple trees. if the number of apple trees are 1500 then the number of trees in the garden is?

Answers

Answer 1
the number of trees in the garden = x
coconut trees = 0.6x
mango trees = 0.6x * 0.25 = 0.15x
apple trees = 0.15x * 0.2 = 0.03x


0.03x = 1500
x = 1500/0.03
x = 50 000   ← the number of trees in the garden.

Related Questions

The sum of two numbers is twice their difference. the larger number is 2 more than twice the smaller. find the numbers. smaller number 1 larger number 3

Answers

x+y=2(x-y)
x+y=2x-2y
3y=x
x-2y=2
then,substitute
(3y)-2y=2
y=2
so,x=3(2)
x=6
x the largest
y the smallest

The smaller number is 1 and the larger number is 3.

What is a linear equation?

Equations whose variables have a power of one are called linear equations. One example with one variable is where ax+b = 0, where a and b are real values and x is the variable.

Let the numbers be x and y.

The sum of two numbers is twice their difference.

(x + y) = 2(x -y)

The larger number is 2 more than twice the smaller.

That means,

y = x + 2.

Then,

(x + x + 2) = 2(x + 2 - x)

2x + 2 = 4

x = 1

And y = 3

Therefore, the numbers are 1 and 3.

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Yi's average for her first 3 tests is 88. what musit she score on her last test to bring her average up to 90

Answers

Her average now is 88.
She needs to bring it up to a 90.

Let's start with if she gets a 90.
88 + 90 = 178
178/2 = 89
A 90 would only get her an average of 89, so you need to go higher.

88 + 91 = 179
179/2 = 89.5

88 + 92 = 180
180/2 = 90


She must get at least a 92 to get an average of 90.

Amanda's penny bank is 23 full. After she removes 120 pennies, it is 12 full. How many pennies can Amanda's bank hold?

Answers

So if the bank was 2/3 full, and then after the pennies are removed it is 1/2 full, then the volume taken up by those removed pennies is the difference:
(2/3)-(1/2)=(4/6)-(3/6)=1/6

If there are 120 pennies in 1/6 of the bank's volume, then the total can be found by multiplying 120 by 6 (so that (1/6)*6=1 (the total volume))

120*6=720
You can fit 720 pennies in that bank

In the middle of the page draw an equilateral triangle with 2 inch sides and the bottom parallel to the bottom of the page. From the center of the right side draw two parallel lines an inch apart and an inch long. Draw a line from the end of one of the parallel lines to the end of the other parallel line. Which direction is the arrow pointing

Answers

Answer: the arrow is pointing 45° to the South of the West

See the picture attached to learn the procedure and the result.






Solution:

Drawn an equilateral triangle of side 2 inches.

One side is parallel to Bottom of page.

Then from the center of the right side draw two parallel lines an inch apart and an inch long.

Then drawn a line from the end of one of the parallel lines to the end of the other parallel line.

The Arrow is pointing in East of South or South of East and North of West or West of North Direction.


8. A brick oven has an opening as shown. What is the area of the entire opening?


A. 22.1 ft2
B. 20 ft2
C. 16.8 ft2
D. 13.5 ft2

Answers

As shown in the picture above, you are given an opening of the brick with a combination of a rectangle and a semicircle. To find the area of the total opening, you need to have the formula of the area of the rectangle and the semicircle.

A (rectangle) = LW
A (rectangle) = (4ft) (2.5ft)
A (rectangle) = 10 ft²

A (parabola) = 2/3ab
A (parabola) = 2/3 (1.25) (4ft)
A (parabola) = 5 (2/3) 
A (parabola) = 3.33ft²

A (total area) = rectangle + parabola
A (total area) = 10 + 3.33
A (total area) = 13.33ft²

The answer is letter D.

what is the proportion for 2/3 and 8/10

Answers

there is no solution I believe since 2/3 and 8/10 cross multiplied are 2 times 10 and 3 times 8 which is 20 = 24 which does not equal and there is no answer

Which statement is true about the polynomial after it has been fully simplified? (See picture)

Answers

I think it would be "It has 2 terms and a degree of 2", because the 3x^2y^2 and the -3x^2y^2 cancel out. Then, you're left with -5xy^2+2x^2.
In what remains, there are 2 terms, each with the highest degree of 2, so I would be led to believe A is your answer.

When n is divided by 7, the remainder is 4. What is the remainder when n+3 is divided by 7

Answers

n = 7k +4  where k is an integer
n + 3 = 7k + 4 + 3  = 7k + 7

which is divisible by 7
so the remainder is 0  <--- Answer

A 33912 cubic feet
B 2260.8 cubic feet
C 54259.20 cubic feet
D 13564.8 cubic feet

Answers

volume of cylinder = pi x r^2 x height

 using 3.14 for pi

volume = 3.14 x 12^2 x 30 = 13564.8 cubic feet

 D is the correct answer

The city is planning to install streetlights and wants five lights along a walkway of 60 yards. if there is a light at the beginning and at the end of the walkway and the lights are evenly spaced, what is the distance between each light

Answers

If you try to imagine a walkway has a total of 60 yards starting from the first streetlight down to the last streetlight. Knowing that there are a total of five streetlights all in all, that means there are only 3 left to space evenly between the first and the last streetlight. Consequently, there would be four spaces all in all. Please see the picture so that you would understand better.

That means there are 4 evenly spaced lengths measuring to x yards. Therefore,

x = 60/4 = 15 yards

The distance between each light is 15 yards.

Which number produces a rational number when added to 0.6?

A. 0.5050050005...
B. square root of 2
C. pie
D. 5/7 (fraction)

Answers

Your answer would be letter D

Answer:

Correct option is D.

Step-by-step explanation:

we have to choose the option for which number produces a rational number when added to 0.6

A rational number is an algebraic term expressed as a fraction. The fraction can also be in decimals but only if the decimal places are not repeating or finite(infinite then repeating). If they aren't, then these are called irrational numbers.

Let's try each of the choices:

A. The term 0.5050050005... is irrational number. Now, when 0.6  is added to it, the sum would be irrational.

B. √2 is an irrational number because its exact value is 1.4142135.. Even if you add 0.3 to it, the answer would still be irrational

C. Obviously, π is an irrational number and addition of rational to irrational always results in irrational.

D. The term [tex]\frac{5}{7}[/tex] is a rational number. Now, when 0.6 or [tex]\frac{6}{10}[/tex] is added to it, the sum would be [tex]\frac{92}{70}[/tex] This is a rational number.

Therefore, the answer is D.

which of the following is an example of conditional probability.
A: probability of hitting a home run
B: Probability of getting an A on a test, given that you didn't fail the test
C: probability of drawing a club from a deck of 52 cards
D: probability of getting an A on a test

Answers

it would be b because first off it is different from all the others and it has probability of a given b

The example of conditional probability is Probability of getting an A on a test, given that you didn't fail the test.

What is conditional probability?

Conditional probability is known as the possibility of an event or outcome happening, based on the existence of a previous event or outcome.

For Conditional probability, the event should be dependent events.

Also, the probability of an event and the condition is that the other event has already been occurred.

Here, in Probability of getting an A on a test, given that you didn't fail the test is  example of conditional probability because  " you didn't fail the test " already occurred and now find the probability of getting A.

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Write the complex number in the form a + bi. 5/2(cos 150° + i sin 150°)

Answers

Answer:

It's actually this

Step-by-step explanation

(told it to convert to rectangular form)

The complex number 5/2(cos 150° + i sin 150°), in the form a + bi, can be written as -(5√3)/4 +i(5/4).

What are complex numbers?

Complex numbers are used to define imaginary numbers, that is, the square roots of negative numbers. √-1 is represented as i.

How to solve the question?

In the question, we are given a complex number 5/2(cos 150° + i sin 150°), and are asked to represent it in the form a + bi.

We know that complex numbers can be written in two forms, a + bi or r(cos θ + i sin θ).

The relation between these are:

r² = a² + b²,

a = r cos θ, b = r sin θ,

tan θ = b/a.

So, comparing 5/2(cos 150° + i sin 150°), to r(cos θ + i sin θ), we can say that r = 5/2, and θ = 150°.

Therefore, a = r cos θ = (5/2) cos 150° = (5/2) (-cos 30°) = -(5√3)/4

b = r sin θ = (5/2) sin 150° = (5/2) sin 30° = 5/4.

Therefore, the complex number 5/2(cos 150° + i sin 150°), in the form a + bi, can be written as -(5√3)/4 +i(5/4).

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Quadrilateral jklm is a rhombus. the diagonals intersect at n. if the measure of angle jkl is 104°, find the measure of angle jkn.

Answers

The diagram of rhombus JKLM is shown in the diagram below

A rhombus is a quadrilateral with four equal sides and its diagonals intersect perpendicular to each other (makes 90° angles). Opposite angles are equal (the same with a parallelogram). Each diagonal bisects the angle at J, K, L, and M equally

If angle JKL is 104°, the measurement of angle JKN is 104÷2=51°

Answer:

It is 52 degrees

Step-by-step explanation:

In a rhombus each diagonal bisects a pair of opposite angles.

Angle JKN is half of angle JKL

Angle JKN = 52°

Please help me!!! I'm super confused

Answers

In this case, the original figure is the large triangle and the dilated figure is the smaller dashed triangle. As early as this stage, we can already set that the dilation is a reduction. We can now eliminate the last choice which says enlargement.

One way to know how much did the figure reduce is by finding the areas of the bigger and smaller triangle. The area of a triangle is equal to half of the product of the length of its base and its height.

Area of larger triangle= 0.5(6 units)(4 units) = 12 square units
Area of smaller triangle = 0.5(3 units)(2 units) = 3 square units.

The ratio of the areas would be 3/12 = 1/4. Therefore, the answer is the first choice.

What's the 6th term in a sequence that starts with -7.5 and has a common ratio of 9?

Answers

[tex]\bf n^{th}\textit{ term of a geometric sequence}\\\\ a_n=a_1\cdot r^{n-1}\qquad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ a_1=-7.5\\ r=9\\ n=6 \end{cases}\implies a_6=-7.5\cdot 9^{6-1}[/tex]

is this correct? if not please let me know how to solve it

Answers

It's correct.

All you had to do was distribute and you did that perfectly.
it is correct. you had to use the distributive property and you did that correctly.

What is h(x) = –3x2 – 6x + 5 written in vertex form?
h(x) = –3(x + 1)2 + 2
h(x) = –3(x + 1)2 + 8
h(x) = –3(x – 3)2 – 4
h(x) = –3(x – 3)2 + 32

Answers

h=-3x^2-6x+5  subtract 5 from both sides

h-5=-3x^2-6x  divide both sides by -3

(5-h)/3=x^2+2x  halve the linear coefficient, square it, add it to both sides....

(2/2)^2=1 add 1 to both sides...

(5-h+3)/3=x^2+2x+1, now the right side is a perfect square...

(8-h)/3=(x+1)^2  multiply both sides by 3

8-h=3(x+1)^2  divide both sides by -1

h-8=-3(x+1)^2  add 8 to both sides

h=-3(x+1)^2+8

h(x)= -3(x+1)^2+8

Second answer down from the top :)

Answer:

its b

Step-by-step explanation:

I just did the assignment

ABCDEFGHIJ is a regular decagon. Find the length of the apothem. Round the answer to the nearest tenth.




A.

8.0


B.
20.5

C.

24.7


D.

26.0

Answers

you find apothem with the formula [tex] \left[a = fn*S] [/tex]

fn is the fixed number (1,539) and S the side of the polygon.

a = 16*1,539 = 24,624 = 24,7

Answer C
Solution:(α=∫nₓS)Use this formula to find apothem

∫n is the fixed number (1,539) and S the side of the polygon.

a = 16 × 1,539 = 24,624 = 247

Answer: C 24.7

The graph below represents the price of the banana at one store. What is the constant of proportionality?

Answers

100 /4 = 25

answer is 25 cents per pound
hope it helps

What is the answer to solve negative eight positive negative 2 for integers?

Answers

We will transform the wordings into an equation as follows:
(-8) + (-2) 
A positive sigh followed by a negative sign usually yields a negative value.

Therefore, the above equation becomes:
- 8 - 2 which can be easily calculated:
-8 -2 = -10

Gabby solved x2 - 3x = 4 as shown below:
x2 - 3x - 4 = 0
(x - 4)(x + 1) = 0
x = -4 and x = 1

Caitlyn says Gabby is wrong and believes this is the solution:
x2 - 3x - 4 = 0
(x - 4)(x + 1) = 0
x = 4 and x = -1

Is Gabby or Caitlyn correct?  What mistake was made by the incorrect girl?  Type your response in the box provided. 

Answers

Caitlyn is correct.
Both factored correctly but the reason Gabby is wrong is because of the Zero Product Property, which says if (x-4)(x+1)=0, then (x-4)=0 or (x+1)=0.

If (x-4)=0, then the value of x must be 4.
If (x+1)=0, then the value of x must be -1.

Determine whether the expression is a polynomial. If it is a polynomial, state the degree of the polynomial.
x^3-9
a. yes, 3
b. yes, 1
c. yes, 2
d. no, it is not a polynomial

Answers

A. the degree of a polynomial is the value of the greatest exponent which in this case is 3

Final answer:

The expression x^3 - 9 is indeed a polynomial because it consists of a variable raised to a non-negative integer exponent and a constant. The highest power of the variable is 3, which makes the degree of the polynomial also 3.

Explanation:

To determine whether the expression x^3 - 9 is a polynomial and to state its degree, we need to look at the characteristics of polynomials. A polynomial is an expression that consists of variables and coefficients, involving only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.

The expression in question, x^3 - 9, fits this definition because it involves a single variable x raised to a non-negative integer exponent (3), and a constant term (-9).

Next, to identify the degree of the polynomial, we look for the highest power of the variable in the expression. The highest power of x in x^3 - 9 is 3. Therefore, this expression is indeed a polynomial, and its degree is 3.

The correct answer to the question is: a. yes, 3.

Twice a certain number is tripled. The resulting number is _____.

Answers

[tex]2x\cdot3=6x[/tex]
x represents the certain number, now make an equation:
(2x)*3 = 6x

which repeating decimal is equal in value to the fraction below? 8/9

a) 0.7777777
b) 0.8888888
c) 0.5555555

Answers

Can be achieved by dividing.
                ___
8 ÷ 9 = 0.8888

Therefore the answer is B
1/9 = 0.11111...
8/9 = 0.888888...

The weights of bags of pet food are distributed normally about the mean, 50 lb. The standard deviation is 0.2 lb. In a group of 20 bags, about how many would you expect to be within one standard deviation from the mean?

Answers

Final answer:

Using the empirical rule for normal distributions, approximately 68% of the data falls within one standard deviation of the mean. Therefore, in a group of 20 bags of pet food with a normal distribution, about 14 bags are expected to be within one standard deviation from the mean.

Explanation:

The question involves the concept of a normal distribution in statistics, and specifically, how it applies to the weights of bags of pet food. Given that the bags have a mean weight of 50 lb and a standard deviation of 0.2 lb, we can use the empirical rule (68-95-99.7 rule) for normal distributions. This rule states that approximately 68% of the data in a normal distribution falls within one standard deviation of the mean.

In this scenario, we have a group of 20 bags of pet food. To find out how many bags we would expect to fall within one standard deviation from the mean, we would calculate 68% of 20:

Expected number of bags within one standard deviation = 0.68 × 20 = 13.6

Rounding to the nearest whole number, we can expect about 14 bags to fall within one standard deviation from the mean.

Salvage system algebraically. Show all your work in circle your answers

Answers

Use substitution for x
2(y+2)+4y=-2
2y+4+4y=-2
6y+4=-2
6y=-6
y=-1

Plug the y value in to find x
x= (-1)+2
x=1

Final answer: (1,-1)

Glenn needs 20 minutes to clean his room. If his little sister Veronika pulls things out while he is cleaning, it takes 60 minutes for him to clean the room. How many minutes does it take for Veronika to pull everything out?

Answers

The rate of Glenn in finishing a job would be equivalent to:

Rate (G) = 1 job / 20 minutes

While the rate of Veronika is:

Rate (V) = 1 job / x                 ---> x is the unknown

Where 1 job for Glenn means completely cleaning his room while 1 job for Veronika means pulling out everything. Therefore the equation to use would be:

1 / 20 – 1 / x = 1 / 60

The rate of Veronika is subtracted from the rate of Glenn since Veronika is slowing Glenn down. Solving for x:

Multiply both sides by 60 x

(1 / 20 – 1 / x = 1 / 60) * 60 x

3 x – 60 = x

2 x = 60

x = 30

Therefore it takes 30 minutes for Veronika to pull everything out.

I will give you the simple version, if it takes 30 min for the brother to clean and the sister takes 20 minites to mess it up before he cleaned, then the sister messed the room up for 30 min because 30x2= 60.

Geometry Help Please

Answers

To determine if ABC is a right angle triangle, we need to check whether two lines are perpendicular, in other words, an intersection of 90°.

When two lines are perpendicular to each other, then their slope multiplied to give -1

Formula to find steepness slope is vertical distance ÷ horizontal distance

Slope AB = [tex] -\frac{3}{2} [/tex] 
Slope BC = [tex] \frac{2}{3} [/tex] 

Slope AB is a negative slope while BC is a positive slope

Slope AB × Slope BC = [tex]- \frac{3}{2} [/tex]×[tex] \frac{2}{3} [/tex] = -1

Angle ABC is right angle, hence triangle ABC is a right-angled triangle

HELP PLEASE..answer fast please and show all work and explain how to solve

Answers

[tex] \cfrac{a}{sinA}= \cfrac{b}{sinB} \ \ \to \\ sinB= \cfrac{b*sinA}{a} = \cfrac{10*sin15^o}{9}= 0.2875 \ \ \to \ m \angle B=16.7^o \\ \\ \\ m \angle C=180- m \angle A- m \angle B=180-15-16.7=148.3^o \\ \\ \\ \cfrac{a}{sinA}= \cfrac{c}{sinC} \ \ \to \ c= \cfrac{a*sinC}{sinA}= \cfrac{9*sin148.3^o}{sin15^o} \approx 18.3[/tex]
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