The mean of a set of data is 45 years. Find the missing numbers in the data set {40,45,48,?,54,?,45}. Explain the method or strategy you used.

please help me!!!​

Answer:

8/8

Step-by-step explanation:

There are two pies, and each one was cut into fourths. There are four fourths in a whole, and since there are two wholes, there are two four fourths (I don't know if this makes sense).

Basically, multiply how many fourths (four per pie) by how many pies there are.

4 x 2 = 8

There are 8 pieces.

Answer:

A proportional relationship between a quantity y and a quantity x that has a constant of proportionality k is represented by the equation y = kx.

Step-by-step explanation:

Answer:

CAB

Step-by-step explanation:

12x - 6 = 10

divide both sides by 2

6x - 3 = 5

add 3 to both sides

6x = 8

multiply both sides by 1/6

x = 4/3

I don't know how you want to write the answer but this is how you get each equation :/

Answer:

CAB

Step-by-step explanation:

Answer:

6 x 10 = 60 x 2 = 120

10 x 10 = 100

120 + 100 = 220

thats my guess im not sure what its asking lol

Answer:

B

Step-by-step explanation:

First you find the amount of people at the reunion which was 80. Then you find 25% of 80. 25% of 80 is 20. The only age group with 20 people is the 20-29 year olds.

Answer:

a.  the relationships between the area of walls left to paint and the time they have been working

b. Company 1

c. Company 2

d. Company 1 = 147 hours, company 2 = 162 hours

Step-by-step explanation:

a. The linear functions model the relationships between the area of walls left to paint and the time they have been working.

b. Company 1 is painting faster because the first line has a slope of -1000/7 while the second line has a slope of -100/9, which means Company 1 is painting 100 ft^2 every 7 hours while Company 2 is painting 100 ft^2 every 9 hours. Therefore Company 1 is going faster.

c. Company 2 had less area to paint when they began because at the 0 hour mark, company 1 had 2100 ft^2 to paint and company 2 had 1800 ft^2 to paint.

d. Company 1 will take 21*7=147 hours to finish. Company 2 will take 18*9=162 hours to finish.

I hope these solutions were helpful. Happy mathing!

Answer:

x = 10

Step-by-step explanation:

the two angles shown are supplementary, they add up to 180 degrees

so we can write this equation to solve for 'x':

100 + 9x - 10 = 180

90 + 9x = 180

9x = 90

x = 10

Answer:

[tex]\tt x=10^o[/tex]

Step-by-step explanation:

The given angles are supplementary angles, meaning they add up to 180°.

[tex]\tt 100+ 9x - 10 = 180^o[/tex]

[tex]\tt 90 + 9x = 180^o[/tex]

[tex]\tt 90+9x-90=180-90\:\: (Subtract)[/tex]

[tex]\tt 9x=90[/tex]

[tex]\tt \cfrac{9x}{9}=\cfrac{90}{9}\;\;(Divide)[/tex]

[tex]\tt x=10^o[/tex]

~

Answer:

19 inches

Step-by-step explanation:

Since the blue ribbon needs to be 7 inches longer than the red ribbon, add 7 to 12 to get 19 inches total.

Hopefully this helps- let me know if you have any questions!

Hey there!

Let's make an equation 28evbar01

=> Convert word problem into equation

7 - x = 12

x = 12 + 7

x = 19

Therefore, Blue ribbon is 19 inches

hope this helps

please mark me brainiest

Answer:

102.8 but since it is about it is 103

Step-by-step explanation:

So, the perimeter of a semicircle is 1/2 (πd) + d where d is diameter

3.14x40=125.6/2=62.8

62.8+40=102.8

Answer:

4/9

Step-by-step explanation:

need more words to send

Answer:

Step-by-step explanation:

There are at least 2 ways you could do this. The best way is to use algebra. The trick is to equate 0.444444 to x, and then create a second equation by multiplying the first equation by 10. In doing this, you can subtract the two equations and that will get rid of the decimal.

10x = 4.444444...

  x =    .444444...             Now subtract these 2 equation

9x = 4                               Divide both sides by 9

9x/9 = 4/9

x = 4/9.

Since you are given choices, you could put each one into your calculator.

1/9 = 0,111111 not the answer.

40 /99 = 0.40404040 which is close but not the answer.

4 / 99 = 0.040404 ... which again is close but not the answer.

Answer:

D Subtract 12 from the product of 5 and 3, then multiply by 8.

Step-by-step explanation:

Use the correct order of operations.

Do the operations in parentheses first.

In the parentheses, do the multiplication first, then the subtraction.

Finally, multiply by 8.

Answer:

D Subtract 12 from the product of 5 and 3, then multiply by 8.

Answer: the answer would be D) subtract 12 from the product of 5 and 3 , then multiply 8 .

Step-by-step explanation: hope this helped , good luck.

Answer:

1. 31.4 cm

2. 15.7 cm

Step-by-step explanation:

Circumference = π X Diameter

Diameter for blue circle = 10 cm

Circumference = 31.4159265 = 31.4 cm

Diameter for orange circle = 5 cm

Circumference = 15.7079633 = 15.7 cm

Answer:

1. 31.4 cm

2. 15.7 cm

Step-by-step explanation:

Answer:

4) 2,400

5) The graph is going up by 500's and this could be misleading because you would have to estimate the elevation.

Step-by-step explanation:

Answer:

it depends

Step-by-step explanation:

for 4 you could say mountain a is 2,250 feet higher or that it is x% higher.

for 5 you could put "the graph may be misleading because the graph starts at a non-0 number thus making one mountain seem much taller than the other" because both mountains start at 16,500 and not 0 making the difference seem more extreme than it is.

Answer:

<B=68

Step-by-step explanation:

complementary means that they add up to 90 degrees, so just like the last one, all you ahve to do is subtract 90-22=68 degrees

Answer:

31.12

Step-by-step explanation:

I thinkkk it's right, Let me know if it's wrong and I'll check it.

Answer:

It was 1.2 degrees Celsius at 7pm.

Step-by-step explanation:

The temperature was 1.2 and -5 represents five hours before midnight (12am).

Answer:

Yah no way man your gonna fail

Step-by-step explanation:

Answer:

44/8. ----- then you reduce to the lowest term and convert to decimals 5.5

Answer:

4 1/2

Step-by-step explanation:

Given lengths :-

To Find :-

Solving :-

Answer:

The answer should Be A. 64 I say this because lets say the constant rate is +4 so what should we do from there. Do 4*16 to get 64.

Step-by-step explanation:

Hope this Helps

Have A Great Day

~Zero~

Answer:

6

Step-by-step explanation:

STEP

1

:

           1

Simplify   —

           3

The equation at the end of step

1

:

 12       1

 —— +  (((—)2) • 9) • 3)

 4        3

STEP

2

:

Equation at the end of step

2

:

 12       1

 —— +  ((—— • 9) • 3)

 4       32

STEP

3

:

Canceling Out:

3.1      Canceling out  32 as it appears on both sides of the fraction line

Equation at the end of step

3

:

 12    

 —— +  (1 • 3)

 4    

STEP

4

:

           3

Simplify   —

           1

Equation at the end of step

4

:

 3 +  3

STEP

5

:

Pulling out like terms

5.1      Pull out     3

After pulling out, we are left with :

     3 • ( 1 - (-1) ))

Final result :

 6

Answer:

6

Step-by-step explanation:

12÷4+(1/3)²⋅9⋅3

Pemdas

Exponents

Multiplication

Division

Addition

Subtraction

*For multiplication and division, whichever one comes first (left to right) will be used first. The same goes for addition and subtraction.*

12 ÷ 4 + 1/3⋅1/3 ⋅ 9 ⋅ 3

12 ÷ 4 + 1/9 ⋅ 9 ⋅ 3

12 ÷ 4 + 1 ⋅ 3

3 + 1 ⋅ 3

3 + 3

6

Hope this helps!

Answer:

6/41

Step-by-step explanation:

6 + 7 + 20 + 8 = 41 so that is number of tiles he took. 6 of those were 41 so therefore, the chance is 6/41

Answer:

There are four red marbles and six blue marbles in all, for a total of ten marbles.

Without replacement, the probability of the first marble being blue is 6/10, while the probability of the second marble being red is 4/9.

The probability of both events occurring is reduced to 4/15 by multiplying 6/10 * 4/9 = 24/90.

Step-by-step explanation:

Mark me brainliest

let's write 2*2*2*2*2*2*2*2*2 in exponential form.

Notice 2 has been multiplied times itself 9 times.

Basic exponential notation:-

[tex]\sf{2*2=2^2}[/tex]

[tex]\sf{2*2*2=2^3}[/tex]

[tex]\sf{2*2*2*2=2^4}[/tex]

You should notice a pattern.

This is the pattern:-

The number of times 2 has been multiplied times itself is the exponent.

In this case, we multiplied 2 times itself 9 times.

Hence, the answer is

[tex]\bigstar{\boxed{\pmb{2^9}}}[/tex]

Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I'll comment and/or edit my answer :)

Answer:

[C] [tex]\frac{6\;days}{x\;Hours}=\frac{1\;day}{24\;Hours}[/tex]

Step-by-step explanation:

Since, we know that

1 Day = 24 Hours

6 Days = x Hours

Cross Multiply:

6 x 24 = 144

1x = 144

x = 144

144 = 144

Hence, the best answer is [C] [tex]\frac{6\;days}{x\;Hours}=\frac{1\;day}{24\;Hours}[/tex]

~lenvy~

The following proportions could be used to convert 6 days to hours as 1 day : 24 hours :: 6 days : x hours.

A mathematical assessment of two numbers is called a proportion. If two sets of provided numbers rise or fall in the same relation, then the ratios are said to be directly proportional to each other.

There is a way to convert 6 days to hours, to use the proportion:

⇒ 1 day : 24 hours :: 6 days : x hours

This proportion shows the relationship between days and hours, and can be used to convert from one unit to the other. To solve for x, we can cross-multiply and divide:

x = 6 days × 24 hours / 1 day = 144 hours

So, 6 days is equivalent to 144 hours.

Hence, the correct answer would be an option (C).

Learn more about the proportion here:

brainly.com/question/1504221

#SPJ2

Answer:

3√2

Step-by-step explanation:

perform factorisation

√18 = √ 2 × 3 × 3

= 3√2

rate :

======================

1 hours → 75 miles

? hours → (1125/75)

It takes her 15 hours to drive 1125 miles.

Answer:

15 hours

Step-by-step explanation:

Finding how much distance in 1 hour

⇒ Ceci = 225 miles = 3 hours

⇒ 225 miles = 3 hours

⇒ 225/3 miles = 3/3 hours

⇒ (25 x 9)/3 miles = 1 hour

⇒ (25 x 3) miles = 1 hour

⇒ 75 miles = 1 hour

Finding how much hours in 1125 miles

⇒ 75 miles = 1 hour

⇒ 75x miles = 1125 miles = x hours

⇒ 75x/75 = 1125/75

⇒ x = 15

⇒ 75(15) miles = 1125 miles = (15) hours

⇒ 1125 miles = (15) hours

Answer : Add Both Together And You Get = 84

Brushes :  8 * 3 = 24

Paints : 10 * 6 = 60

Step-by-step explanation:

Hope it helps you

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