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3 years ago

See if you can solve this because this is really difficult for me.

Mathematics

2 answers:

nataly862011 [7]3 years ago

7 0

add up all numbers 4+7+5+4+5=25, divide by number of days 25/7 = $3.57

Goshia [24]3 years ago

4 0

Answer:

The answer is $5.

Step-by-step explanation:

To find the average amount of money Mandy earned per day, add all the numbers together, which equals $25.

$4 + $7 + $5 + $4 + $5 = $25

Next, divide $25 by the total amount of numbers in the set, which 5.

$25 divided by 5 equals $5.

Thus, Mandy earns an average of $5 per day delivering groceries.

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Rachel has 60 scones. She sells them to Robbie, Cameron, Louis, Tom and Charlie in that order. Each customer buys more scones th

Dafna11 [192]

Answer:

Robbie: 6
Cameron: 9
Louis: 12
Tom: 15
Charlie: 18

Explanation:

1) Assume that Rachel sold all the cones: 60

2) Call x the amount that Robbie bought and d the constant increase on the purchse.

3) That means that the number of cones bought by each one is:

Robbie: x
Cameron: x + d
Louis: x + d + d = x + 2d
Tom: x + 2d + d = x + 3d
Charlie x + 3d + d = x + 4d

The sum of that is: x + (x + d) + (x + 2d) + (x + 3d) + (x + 4d) = 5x + 10d = 60

5x + 10d = 60 may be simplified by dividing each side by 5 => x + 2d = 12.

Equation (1) x + 2d = 12

4) Robbie and Cameron’s combined total number of scones is three sevenths of the total of Louis, Tom and Charlie

=> x + (x + d) = [3/7] [ (x + 2d) + (x + 3d) + (x + 4d) ]

=> 2x + d = [3/7] (3x + 9d)

=> 7(2x + d) = 3 (3x + 9d)

=> 14x + 7d = 9x + 27d

=> 14x - 9x = 27d - 7d

=> 5x = 10d

=> x = 2d

Equation (2) x = 2d

5) Now you just have to solve this simple system of equations:

x + 2d = 12

x = 2d

Subitituing x for 2d in the first equation: x + x = 12 => 2x = 12 => x = 6

Now replace x = 6 in any of the two equations and you get the value of d.

For example, from x = 2d => d = x / 2 = 6 /2 = 3.

6) Finally, calcualte the number of cones of each:

 Result
Robbie: x 6
Cameron: x + d 6 + 3 = 9
Louis: x + d + d = x + 2d 9 + 3 = 12
Tom: x + 2d + d = x + 3d 12 + 3 = 15
Charlie x + 3d + d = x + 4d 15 + 3 = 18
 -----------------------------------------
Total 6 + 9 + 12 + 15 + 18 = 60

8 0

3 years ago

Fake answers will be reported

AysviL [449]

Answer:

114,2

Step-by-step explanation:

the square = 8×8 = 64

the quarter circle=

$\frac{1}{4} \times ( {8}^{2} \times 3.14) = 16 \times 3.14 = 50.24$

64+50,24=114,24

6 0

3 years ago

Read 2 more answers

G(x) = –(x + 3)2 – 4?

professor190 [17]

Answer:

g(x)=-x-5

Step-by-step explanation:

Simplify parenthesis by distribution:

g(x)=-x-3+2-4

Addition and Subtraction:

-3+2=-1, -1-4=-5

Finalize since no more simplification:

g(x)=-x-5

Pls give thx and brainliest wanna level up

6 0

3 years ago

Mikita is painting a spherical model of a human cell for a science fair. She uses 452.16 square inches of paint to evenly cover

GaryK [48]

Answer:

Step-by-step explanation:

Basically you have to divide 3.14 by 452.16 (the formula for area of circle is pi times r squared) and that will get you 144. The square root of 144 is 12 :)

7 0

3 years ago

How many significant figures does 2016m has ????????????????????????????????????????????????

KatRina [158]

4 significant figures.

Step-by-step explanation:

6 0

3 years ago