Mark and Melissa went to the garden center together to buy plants. Mark bought six ferns and one azalea for $80. Melissa bought five ferns and three azaleas for $84. how much was a single fern

Final answer:

The number in question is 70, found by solving the equation 1/2 * x - 25 = 10.

Explanation:

To find a number where half of that number, subtracted by 25, equals 10. We can set up an equation to represent this: 1/2 * x - 25 = 10, where 'x' is the number we are trying to find. To solve for 'x', we first add 25 to both sides of the equation, which gives us 1/2 * x = 35. Then, to isolate 'x', we multiply both sides by 2, resulting in x = 70. Therefore, the number is 70.

Final answer:

To find the number, isolate the variable by performing inverse operations. The number is 70.

Explanation:

To find the number, we need to translate the given information into an equation. Let's assume the number is x. The equation can be written as:

1/2x - 25 = 10.

To isolate the variable x, we first add 25 to both sides of the equation:

1/2x - 25 + 25 = 10 + 25.

This simplifies to 1/2x = 35.

Next, we multiply both sides of the equation by 2 to undo the division by

1/2: 2 × (1/2x) = 2 × 35.

The 1/2 cancels out on the left side, leaving us with x = 70.

Therefore, the number is 70.

Answer:

13

Step-by-step explanation:

I believe you would take the number of students and divide by the number of members

Answer:

Step-by-step explanation:

Given expression 9+8.

We need to rewrite it using Commutative Property.

Note: According to Commutative Property of Addition

a + b = b + a

Therefore,

We just need to swap the positions of numbers.

Second expression : 91+0

We need to rewrite it using Identity.

According to Identity property of addition

a+0 = a.

When we add 0 to any number it gives same number.

Therefore,

Answer:

Range = 24

Step-by-step explanation:

Record of percentage

59, 61, 83, 67, 81, 80, 81

We need to find the range

To find the range , we order the numbers from smallest to largest.

Then Subtract the smallest number from largest number.

When we arrange the numbers it becomes

59, 61, 67, 80, 81, 81, 83

Smallest number is 59 and largest number is 83

Range = 83 - 59 =24

Answer:

The average rate is 35 miles per hour

Step-by-step explanation:

To get from town A to town B takes 3 hours.  The distance is 100 miles

To get from town B to  town c takes 1 hours.  The distance is 40 miles

To find the average rate , we need to find the total distance and divide by the total time

Total distance = 100 + 40 = 140 miles

Total time = 3 hrs + 1 hr = 4 hours

distance = rate * time

140 miles = rate * 4 hours

140/4 = rate

35 = rate

The average rate is 35 miles per hour

Answer:

i dont know

Step-by-step explanation:

Answer:

(7)

error percentage is 0.6%

(8)

Graph-C

Step-by-step explanation:

(7)

we are given cube

Let's assume edge of cube =x

so, volume of cube will be

[tex]V(x)=x^3[/tex]

we are given

V=125000

so, we can find 'x'

[tex]125000=x^3[/tex]

[tex]x=50[/tex]

So,

[tex]a=50[/tex]

now, we can use linear approximation formula

[tex]L(x)=V(a)+(x-a)V'(a)[/tex]

[tex]L(x)=V(a)+(\Delta x)V'(a)[/tex]

we have

[tex]\Delta x=0.1[/tex]

we can plug a=50

[tex]L(x)=V(50)+(0.1)V'(50)[/tex]

[tex]V(x)=x^3[/tex]

we can find derivative

[tex]V'(x)=3x^2[/tex]

now, we can plug x=50

[tex]V'(50)=3(50)^2[/tex]

[tex]V'(50)=7500[/tex]

now, we can plug these values

and we get

[tex]L(x)=V(50)+(0.1)\times 7500[/tex]

[tex]L(x)=V(50)+750[/tex]

[tex]L(x)-V(50)=750[/tex]

so, error is

[tex]error=750[/tex]

now, we can find percentage error

Percentage is

[tex]=\frac{750}{125000}\times 100[/tex]

=0.6%

so, error percentage is 0.6%

(8)

we are given

[tex]s(t)=2e^{-1.5t}sin(2\pi t)[/tex]

We will find derivative

To get velocity , we will find derivative

[tex]s'(t)=\frac{d}{dt}\left(2e^{-1.5t}\sin \left(2\pi t\right)\right)[/tex]

we can use product rule

and we get

[tex]s'(t)=-3e^{-1.5t}sin(2\pi t)+4\pi e^{-1.5t} sin(2\pi t)[/tex]

so, we get velocity equation as

[tex]v(t)=-3e^{-1.5t}sin(2\pi t)+4\pi e^{-1.5t} sin(2\pi t)[/tex]

now, we can draw graph

we can see that firstly , we get maxima and then minima

so, our graph would be

graph-C........Answer

Final answer:

To estimate the percentage error in volume, use the tangent line approximation and find the derivative of the volume function. Then divide the change in volume by the actual volume and multiply by 100%.

Explanation:

To estimate the percentage error in volume, we need to find the derivative of the volume function with respect to the length of one edge of the cube. The volume of a cube is given by V = a^3, where a is the length of one edge of the cube. So, the volume function is V = a^3.

Using the tangent line approximation, we can approximate the change in volume as the derivative of the volume function multiplied by the change in length of one edge of the cube. The derivative of the volume function is dV/da = 3a^2. The change in length of one edge is ±0.1 cm. So, the change in volume is approximately dV = (3a^2) * (±0.1 cm).

To find the percentage error in volume, we divide the change in volume by the actual volume and multiply by 100%. The actual volume is 125,000 cm^3. So, the percentage error in volume is approximately [(3a^2) * (±0.1 cm)] / (125,000 cm^3) * 100%.

Answer:

47 squared units.

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

evaluate from left to right, substituting the given values into the expression

= [tex]\frac{70}{10}[/tex] + (5 × 3) - (2 × 10)

= 7 + 15 - 20

= 22 - 20

= 2

Substitute the values of a and b to the expression:

[tex]a=3,\ b=10\\\\\dfrac{70}{b}+5a-2b=\dfrac{70}{10}+(5)(3)-(2)(10)\\\\=7+15-20=22-20=\boxed2[/tex]

Answer: You can get 6 pounds of apples and approximately 19 apples.

Step-by-step explanation:

There are 16 ounces per pound so 6 pounds is 96 ounces

96/5 = 19.2

You can buy 6 pounds of apples for 9, which is approximately 19 apples.

1. First, let's find out how much one pound of apples costs. Since two pounds cost $3.00, one pound would cost half of that, which is $1.50.

2. Now, if one pound costs $1.50, we can find out how many pounds of apples you can buy for $9 by dividing $9 by the cost per pound: [tex]\( \frac{9}{1.50} = 6 \)[/tex]. So, you can buy 6 pounds of apples for $9.

3. Since 1 pound equals 16 ounces, 6 pounds equal [tex]\( 6 \times 16 = 96 \)[/tex]ounces.

4. If one apple is approximately 5 ounces, then the number of apples you can buy for 96 ounces is [tex]\( \frac{96}{5} \).[/tex]

5. Performing the division, [tex]\( \frac{96}{5} = 19.2 \)[/tex]. Since you can't buy a fraction of an apple, you'd round down to the nearest whole number.

6. So, you can buy approximately 19 apples for $9.

Here's the calculation step by step:

1. Cost per pound: [tex]\( \frac{3.00}{2} = 1.50 \)[/tex] dollars per pound.

2. Pounds you can buy for $9: [tex]\( \frac{9}{1.50} = 6 \)[/tex] pounds.

3. Total ounces: [tex]\( 6 \times 16 = 96 \)[/tex] ounces.

4. Apples you can buy: [tex]\( \frac{96}{5} = 19.2 \)[/tex](rounded down to 19 apples).

Answer:

4.66 years

Step-by-step explanation:

Let us assume that it will take 't' years for him to repay the money that he would borrow.

We can use monthly cashflow formula:

[tex]C=Pr\frac{(1+r)^{12t}}{(1+r)^{12t}-1}[/tex]

Here, we have been given:

Monthly cashflow C=425

Loan amount P=20000

Interest rate AMR = 7.5%. Therefore, we have [tex]r=\frac{0.075}{12}[/tex]

Upon substituting these values in the formula, we get:

[tex]425=20000\cdot \frac{0.075}{12} \frac{(1+\frac{0.075}{12})^{12t}}{(1+\frac{0.075}{12})^{12t}-1}[/tex]

Upon simplifying, we get:

[tex]425=125 \frac{(1+0.00625)^{12t}}{(1+0.00625)^{12t}-1}[/tex]

[tex]425=125 \frac{(1.00625)^{12t}}{(1.00625)^{12t}-1}[/tex]

Upon solving this equation using a calculator, we get:

[tex]t=4.66[/tex]

Therefore, correct answer is 4.66 years. That is, second choice from the given options.

Answer:no it is not reasonable

Step-by-step explanation: take the Max average number and multiply it by six, it only reaches 10.26

John's estimation of 28 units of electricity usage for the six houses on Philips Road is considered reasonable since it falls within the calculated possible range of 18.96 to 40.08 units.

To verify John's estimate, we need to consider the maximum and minimum electricity usage for the houses based on their given range of usage and time. On the high end, each house could use 1.71 units for 4 hours, which gives a total of 6.84 units per house.

Therefore, the total usage for all six houses would be 40.08 units (6 x 6.84 = 40.08). On the low end, each house could use 1.58 units for 2 hours, amounting to 3.16 units per house. The total for all houses would then be 18.96 units (6 x 3.16 = 18.96). Given this, John's estimate of 28 units falls within this range and can be considered reasonable.

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Answer:

15.8125 lb

Step-by-step explanation:

Answer:

15 lb. 13oz.

Step-by-step explanation:

no need

Answer:

30%

Step-by-step explanation:

there is a 60% chance of getting a red marble each time. You need to choose a ball twice. 60/2=30. therefore there is a 30% chance of getting two reds.

Final answer:

To find the probability of drawing two red marbles with replacement from a jar of six red and four blue marbles, we multiply the probability of drawing a red marble (3/5) by itself, resulting in 9/25.

Explanation:

The question asks for the probability that both marbles will be red when two marbles are chosen one at a time with replacement from a jar containing six red marbles and four blue marbles.

To find this, we calculate the probability of drawing a red marble, and since we replace the marble each time, this probability does not change with each draw. With six red marbles out of a total of 10, the probability of drawing a red marble on the first draw is 6/10 or 3/5. Since we replace the marble after each draw, the probability remains the same for the second draw.

Therefore, the probability of drawing two red marbles in a row is (3/5) * (3/5), which is 9/25.

Answer:

10m-16

Step-by-step explanation:

3(4m-2)-2(m+5)

Distribute 3 into the equation

12m-6 than do the same with -2

-2m-10

combine like terms

10m-16

simplify

Equivalent expressions are expressions that have equal values

The equivalent expression is [tex]10m - 16[/tex]

The expression is given as:

Open the brackets

[tex]3(4m - 2) -2 (m + 5) = 12m - 6 - 2m - 10[/tex]

Collect like terms

[tex]3(4m - 2) -2 (m + 5) = 12m- 2m - 6 - 10[/tex]

Evaluate the like terms

[tex]3(4m - 2) -2 (m + 5) = 10m - 16[/tex]

Hence, the equivalent expression is [tex]10m - 16[/tex]

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Answer:

D

Step-by-step explanation:

The pentagon has 5 interior angles that add up to 360. To find the angle of rotational symmetry, divide 360 by 5 (you get 72). So if you rotated the shape 72 degrees, it will map onto itself. 72 times 2 is 144, and that's rotating the shape 72 degrees twice, so it will stay the same.

A mathematical transformation that carries a pentagon onto itself is a rotation by 72 degrees or a multiple of 72 degrees, which are the internal angles of a regular pentagon.

The question is referring to certain mathematical transformations that can be applied to shapes, specifically a pentagon. A transformation that will carry a shape onto itself, maintaining its form, is a symmetry operation. For a pentagon, one of these transformations could be a rotation. For example, if you rotate the pentagon 72 degrees or a multiple of 72 degrees (such as 144, 216, 288 degrees, etc.), it will land on itself because 72 degrees represents each internal angle of a regular pentagon.

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Answer:

the answer is rectangle

Step-by-step explanation:

Answer:

g(x) = |x + 3|

Step-by-step explanation:

The x is replaced by x + 3

The equation of g(x) is | x + 3 | when g ( x ) is translated 3 units to the left

How does the transformation of a function happen?

The transformation of a function may involve any change.

Usually, these can be shifted horizontally (by transforming inputs) or vertically (by transforming output), stretched (multiplying outputs or inputs)

Horizontal shift (also called phase shift):

Given data ,

The function f(x) = | x | , this function is needed to be translated 3 units to the right. Therefore, the new function can be written as ,

g ( x ) = f ( x + 3 )

     = | x + 3 |

Hence, the equation of g(x) is | x + 3 |.

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Answer:

5

Step-by-step explanation:

For direct variation y=kx, where k is the constant of proportionality

We need to get the equation in this form

3y = 15x

Divide each side by 3

3y/3 =15x/3

y = 5x

The constant is 5

Answers: choice A, choice C

Compute the discriminant (use a = 1, b = 5, c = 11)

D = b^2 - 4ac

D = 5^2 - 4*1*11

D = 25 - 44

D = -19

The discriminant is negative, so the two solutions are complex or imaginary. The -19 will be under the root as choice A and choice C show

Answer:

The simplified form of the equation is 9x^3/10y^2   Good Luck!

Step-by-step explanation:

Answer:

if you go to a site called math papa it gives you the answer and how to do it

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

{3, 5, 6, 7 }

Step-by-step explanation:

to find the range of f(x) substitute the given values of x from the domain into f(x)

f(- 3) = - (- 3) + 4 = 3 + 4 = 7

f(- 2) = - (- 2) + 4 = 2 + 4 = 6

f(- 1) = - (- 1) + 4 = 1 + 4 = 5

f(1) = - 1 + 4 = 3

range y ∈ {3, 5, 6 , 7 }

Answer:

The family formed by these numbers is 3x where x is any integer number.

Step-by-step explanation:

We have been given 3 9 12

We can see that given numbers are multiple of 3 so, we can say that the given numbers are from the family of 3x

Where x is any integer number when multiplied by 3 will give the multiple of 3.

Answer:

5 : 3

Step-by-step explanation:

the ratio of length : width

= 10 : 6 ← divide both parts of the ratio by 2

= 5 : 3 ← in simplest form

Answer:

a = (D+f) * g

Step-by-step explanation:

We want to isolate a

a/g -f =D

Add f to each side

a/g -f+f = D+f

a/g = D+f

Multiply each side by g

a/g *g = (D+f) * g

a = (D+f) * g

[tex]\dfrac{a}{g}-f=D\qquad\text{add f to both sides}\\\\\dfrac{a}{g}=D+f\qquad\text{multiply both sides by }\ g\neq0\\\\\boxed{a=g(D+f)}\qquad\text{use distributive property}\\\\\boxed{a=Dg+fg}[/tex]

Answer:

Subtract the 4 additional poems from what was published first:

22 - 4 = 18

Now 18 is 2/3 of what she wrote.

To find the total poems written divide 18 by 2/3:

18 / 2/3 = 27

Sh wrote 27 poems total.

Answer:

The sign is positive.

Step-by-step explanation:

a > 0 and b < 0

So, a·b < 0

⇒ -4·a·b > 0

⇒ -4·a·b - 4·a·b > 0

Hence, the sign will be positive

Answer:

the answer is on top of me

Step-by-step explanation:

my mom is angry at me and im bored

I'm not sure what you're trying to ask, but if you're trying to find the individual cost;

Solution: Cost of 1 candy bar is $0.91

Explanation: The quotient of 10 and 11 is 0.90909090909, which rounds into 0.91

Hope This Helps!!!

-Austint1414

One chocolate bar costs approximately 0.91 dollars.

Let x be the cost of one chocolate bar.

Given that 11 chocolate bars cost 10 dollars, we set up a proportion:

11 bars / 10 dollars = 1 bar / x dollars

To get cost of one chocolate bar (x), we cross-multiply:

11 * x = 10 * 1

11x = 10

x = 10 / 11

x ≈ 0.91 dollars.

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Full question:

11 chocolate bars cost 10 dollars. How much does 1 chocolate bars cost?

Answer:

40x/(15x²y²)

Step-by-step explanation:

    8/(3xy²)       Multiply by 5/5

= 40/(15xy²)     Multiply by x/x

= 40x/(15x²y²)