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4 years ago

Can someone please help with #4? What would be the formula?

Mathematics

1 answer:

iris [78.8K]4 years ago

6 0

0k it is a because u need to divide htew formula

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If 45 cookies will serve 15 students, how many cookies are needed for 27 students?

Kitty [74]

Answer:

Step-by-step explanation:

45/15

3*27=81

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3 years ago

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Use a 10x10 grid to express the fraction 11\20 as a percent. How many squares would I shade in?

GenaCL600 [577]

Answer: You would share in exactly 55 squares.

Step-by-step explanation: To solve this, you need to know how to convert, divide, and multiply.

10*10=100

100/n=20

n=5

11*5=55

SO, you shade in 55 squares.

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3 years ago

BRAINLIEST (9th grade mathematics)

liraira [26]

Answer:

5 m/min

Step-by-step explanation:

Initial speed = 6 m/ min

Final speedd = 4 m/ min

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2 years ago

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In a school with 400 students, 120 ride the bus to school. What percent of the students ride the bus to school

Murrr4er [49]

30% you have to find a equivalent number with the denominated 100z multiply both numerator and denominator by 100. 120/400x100/100= (120 x 100/400) x 1/ 100=30

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3 years ago

Jim sells used drones for 70% of the original manufacturer's purchase price of a new drone. Jim also sells new drones for 15% mo

adell [148]

The function for the amount saved if they purchase a used drone rather than a new drone from Jim's store is f(x) = 0.45x

He sells used drones at 70% of the price (x).

So, the selling price of a used drone is:

$\mathbf{Used = 70\% \times x}$

Express percentage as decimal

$\mathbf{Used = 0.7 \times x}$

$\mathbf{Used = 0.7x}$

Also, he sells new drones at 15% more of the price (x).

So, the selling price of a new drone is:

$\mathbf{New= (1 + 15\%) \times x}$

Express percentage as decimal

$\mathbf{New= (1 + 0.15) \times x}$

$\mathbf{New= 1.15 \times x}$

$\mathbf{New= 1.15x}$

The amount saved is the difference between the prices of the drones.

So, we have:

$\mathbf{Saved =New - Old}$

This gives

$\mathbf{Saved =1.15x- 0.7x}$

Subtract

$\mathbf{Saved =0.45x}$

Express as a function

$\mathbf{f(x) = 0.45x}$

Hence, the function for the amount saved is f(x) = 0.45x