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2 years ago

Kelly plants 45 tulips in 30 minutes what is the unit rate?

Mathematics

1 answer:

Natasha_Volkova [10]2 years ago

7 0

Answer:

1.5 per minute

Step-by-step explanation:

unit rate is how many in 1 minute so 45 divided by 30 is 1.5 and if you want to check your answer do 1.5 x 30 which is 45

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Julio takes a multivitamin and a calcium vitamin every day. One at a time, he randomly

Delicious77 [7]

Answer:400

Step-by-step explanation:

3 0

2 years ago

Mr jones is planning to pant grass and place afence in a small area for his dog. The rectagular dimension are 12×15 feet. The gr

goldenfox [79]

Answer:

A) The total feet needed for the fence total perimeter is 54 feet

B) The total cost of fence is $432

C) The square feet of grass needed foe the total area is 180 square feet

D) The total cost of the project is $572

Step-by-step explanation:

Given as :

The dimension of rectangular field

Length of rectangular field = L = 12 feet

width of rectangular field = w = 15 feet

The cost of grass per square foot = 50 cents = $0.5 ( ∵ 1 cents = $0.01 )

The cost of small fence = $8 per linear foot

Now, According to question

A ) Let The total feet needed for the fence total perimeter = A feet

∵ Perimeter of rectangular field = 2 × Length + 2 × width

Or, A = 2 × L + 2 × w

Or, A = 2 × 12 feet + 2 × 15 feet

Or, A = 24 feet + 30 feet

∴ A = 54 feet

So, The total feet needed for the fence total perimeter = A = 54 feet

B ) Let The total cost of fence = $B

So, The total cost of fence = The cost of small fence × perimeter of fence

i.e B = $8 × 54 feet

∴ B = $432

So,The total cost of fence = B = $432

C) Let the square feet of grass needed foe the total area = C square feet

∵The Area of rectangular fence = Length × width

Or, The square feet of grass needed foe the total area = Area of rectangular fence = L × w

i.e C = 12 feet × 15 feet

Or, C = 180 feet²

So,The square feet of grass needed foe the total area = C = 180 square feet

D) Let The total cost of grass = $D

∵ The cost of grass per square foot = $0.5

So,Total cost of grass = $0.5 × Area of fence

i.e D = $0.5 × 180 feet²

Or, D = $90

So, The Total cost of grass = D = $90

E) Let the total cost of the project = $E

∵Mr. Jones spend additional $50 for tools

So, The total cost of the project = money spent on tools + total cost of fence + Total cost of grass

i.e E = $50 + B + D

Or, E = $50 + $432 + $90

∴ E = $572

So, The total cost of the project = E = $572

Hence,

A) The total feet needed for the fence total perimeter is 54 feet

B) The total cost of fence is $432

C) The square feet of grass needed foe the total area is 180 square feet

D) The total cost of the project is $572 Answer

3 0

3 years ago

Solve the two-step equation. -9x 0. 4 = 4 Which operation must be performed to move all the constants to the right side of the e

AlekseyPX

The steps needed to solve the given equation is required.

Adding the opposite value of the constant to both sides.

Divide both sides by the coefficient of the variable.

The solution to the equation is

The given equation is

In order to solve this we first move constants to the side opposite of the variable.

This is done by adding the opposite value of the constant to both sides.

Here is the constant so we add to both sides.

Now, we divide both sides by the coefficient of the variable.

The solution to the equation is

3 0

2 years ago

Rate of change of rational functions

densk [106]

Answer:

0.635

Step-by-step explanation:

$rate~of~change = \dfrac{f(x_2) - f(x1)}{x_2 - x_1}$

$x_1 = 0$ $x_2 = 0.3$

$f(x) = \dfrac{-7x^3}{x^4 - 1}$

$f(x_1) = f(0) = \dfrac{-7(0)^3}{(0)^4 - 1}$

$f(x_1) = \dfrac{0}{-1} = 0$

$f(x_2) = f(0.3) = \dfrac{-7(0.3)^3}{(0.3)^4 - 1}$

$f(x_2) = \dfrac{-0.189}{-0.9919} = 0.190543$

$rate~of~change = \dfrac{0.190543 - 0}{0.3 - 0} = 0.635$

5 0

2 years ago

Find the volume of a cone with a height of 9 cm and a base of 5 cm

Vilka [71]

Answer:

V=πr2h

Step-by-step explanation:

3 0

2 years ago

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