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3 years ago

HOW TO DO THIS QUESTION PLEASE

Mathematics

1 answer:

Gelneren [198K]3 years ago

6 0

Answer:

Step-by-step explanation:

$\frac{2}{5}*85$

Long way

multiply the two numerators
multiply the two denominators
simplify the new fractions

$\frac{85}{1}*\frac{2}{5} \\ \\ \frac{170}{5} \\ \\ =34$

short way

-can be simplified before mulitplying

factor out common factors in the numerator and denominator

$\frac{85}{1} *\frac{2}{5} \\ \\ \frac{17}{1}*\frac{2}{1} =34$

Think 85 and 5 as nickels. You need 20 nickels to make 100. Subtract 100 by 85 to get 15. You get 3 nickels and 17 nickels. 17 is the common factor. Multiply 17 by 2 to get your answer.

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Which of the following activities are examples of data gathering?

arsen [322]

the correct answer is d

8 0

2 years ago

Pam bought 20 pieces of fruit for her class.

Maksim231197 [3]

Answer:

Step-by-step explanation:

Let O=number of oranges and A=number of apples.

O+A=20

O=20-A

1.25A+0.95O=22.60, using O found above makes this become

1.25A+0.95(20-A)=22.60

1.25A+19-0.95A=22.60

0.3A+19=22.60

0.3A=3.6

A=12, since O=20-A

O=20-12

O=8

So she bought 8 oranges and 12 apples. The question really only asks for the number of apples bought.

12 apples were bought.

7 0

2 years ago

Read 2 more answers

Helpppp please!!!!!!!!!!

hram777 [196]

Answer:

128.86 cm^2

Step-by-step explanation:

So to start off we need to find the area of the rectangle.

The formula for the area of a rectangle is $l$ × $w$ .

L stands for the length which is 12 and w is the width which is 11.

So 11 × 12 = 132 cm^2.

Now time for the area of a circle.

The formula for that is $\pi r^{2}$ .

So first we need to do 1 × 1 which is 1.

Then 1 × $\pi$ which is just $\pi$ .

Then we do 132 - $\pi$ which is an irrational number.

It looks like this shortened 128.858407346.

Now rounding to the nearest hundreth it would be 128.86 cm^2.

Hence, the area of the shaded region is 128.86 cm^2.

8 0

2 years ago

A mail carrier at the U.S. Postal Service works on Sunday delivering high-priority letters and packages. She can deliver 14 ite

Kobotan [32]

Answer:

$4.257

Step-by-step explanation:

Given:

Items delivered per hour = 14

Fixed hourly costs = $47

variable cost = $0.90

Now,

at breakeven point, the profit = 0

Total revenue = total cost

let the charge at breakeven point be 'x'

thus,

x × 14 = $47 + ($0.90 × 14)

x × 14 = $47 + $12.6

14x = $59.6

x = $4.257

Hence, the breakeven charges are $4.257

7 0

3 years ago

FIRST CORRECT ANSWER GETS BRAINLIEST

uranmaximum [27]

L = α * R where L is the length of the arc of the circle, R is the radius of the circle, and α is the central angle expressed in radians, so

 $R = \cfrac{L}{ \alpha }= \cfrac{10 \pi }{ \frac{5 \pi }{6} } = \cfrac{10 \pi *6}{5 \pi }=2*6=12 \ units$

6 0

3 years ago

HOW TO DO THIS QUESTION PLEASE ​

HOW TO DO THIS QUESTION PLEASE