HEEEEEEELLLLLPPPPP!!!!!!!!!!!!!!!!!!

Answer:

18

Step-by-step explanation:

count

The number of students measured in this sample is 18.

The number of students measured is the number of heights that were acquired for the sample.

Looking at the question, the number of heights acquired were 18 which means that there were 18 students.

Knowing the number of students is important as it can help you calculate things such as mean:

Mean = Sum of heights / Number of students

= (75 + 72 + 72 + 73 + 74 + 65 + 69 + 74 + 70 + 70 + 71 + 75 + 71 + 75 + 69 + 75 + 78 + 70) / 18

= 72.11

In conclusion, the number of students measured is 18.

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Answer:

1 13/ 24

Step-by-step explanation:

2-1=1

5/8 - 1/12=26/48 =13/24

Answer:

$37.8125

Step-by-step explanation:

$2.75 x 12.5 = 34.375

34.375 x 10% = 3.4375

$34.375 + 3.4375 = 37.8125

Answer:

Step-by-step explanation:

You know that all of the angles of a triangle have to add to equal 180°.

Therefore, (3x)+(2x+20)+(4x-20)= 180°

If you combine like terms you get:

9x=180°

Divide both sides by 9 to get:

X=20

Answer:

The answer is -2

Step-by-step explanation:

im just built diffrent

Answer:

Total area = 141,

the trapezoid = 117, the triangle=24

Answer:

x=1

Step-by-step explanation:

i believe its asking at which point is the output the same and when x=1 they both output 3

Answer:

I think it's C

Step-by-step explanation:

I just rotated point K 180 degrees and C was the only one with the coordinate points I got for K'

Answer:

He would need to work 8 weeks for 2300, 16 for 6400, and 22 for 8800

Step-by-step explanation:

You have to divide 3,200 by 400 since thats how much he makes in a week

that gives you 8

and you do the same for the rest

equation:

money wanted/400=weeks

Answer:)

he work for 8 weeks to earn 3,200

he needs to work 8 more weeks to earn 6,400

he needs to work 14 more weeks to earn 8,800

Step-by-step explanation:

Answer:

the function would look like: f(x)=(x³+3)-1

the graph would literally look like the cubic parent graph, just shifted 3 left and 1 down

Answer:

22

Step-by-step explanation:

2x+12=x+34

2x-x=34-12

x=22

Answer:

$1,007.81

Step-by-step explanation:

Answer:

E. 15

Step-by-step explanation:

Use the Pythagorean theorem: a²+b²=c²

Answer:

Step-by-step explanation:

15

Answer:

Jack is incorrect. The correct answer is 2

Step-by-step explanation:

The question is given as:

4x-24 / (y+w)  where x=5, y=3 and w= -5

Substitute values of x, y and w in the equation as;

4*5 - 24 / (3+-5)

20 - 24 / (-2)

-4 / -2 = 2

Jack's answer is 7 which is wrong. The correct answer is 2

2 is correct because you have substituted the real values of x,y and w in the expression and performed the operation right.

Answer:

[tex]\frac{3}{7}[/tex]

Step-by-step explanation:

20% male and 30% female. 20% + 30%= 50% It is asking us what members participating was female. *50% out of 100%

> [tex]\frac{30}{70}[/tex] reduce or divide by 10 we get our fraction and answer, [tex]\frac{3}{7}[/tex].

Answer:

6 , 12 ,18

Step-by-step explanation:

6 time 2 = 12

6 times 3 = 18

not more that 20 so that is it

Answer:

112 its the same as 80 + 32

The expression is  78+34=80+32

Equivalent equations are algebraic equations that have identical solutions or roots. Adding or subtracting the same number or expression to both sides of an equation produces an equivalent equation.

Given here, 78+34=112 and 80+32 =112 thus, 78+34=80+32  The equivalence is preserved.

Hence, The expression is  78+34=80+32

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Answer:

[tex]\sqrt{34}[/tex] or 5.83095

Step-by-step explanation:

Use the distance formula [tex]\sqrt{(x_{2}-x_{1} )^{2}+(y_{2}-y_{1} )^2 }[/tex]

Make sure to round the answer appropriately if not asked for in square root form!!

Answer:

The first order.

Step-by-step explanation:

What do these symbols mean?

The funny shaped line is a square root, meaning what times itself (so for example, 3 x 3) gets that number. So the square root of 9=3.

The small 2 in the top right of the big numbers means square. The opposite. This means multiply that big number by itself twice. If the small number was say, 7, you would multiply the big number by itself 7 times. A common mistake is propel multiply the big number by the small number. The square used in these is 2 to the power of 3, the small number. This means you do 2x2x2, as the small 3 determines how many time you multiply the big number, 2. The result of 2x2x2=8.

The fraction is 11/9. The 9 means how many parts are in a whole number. The 11 means how many of those parts you actually have. Like a pizza-if you had a pizza (the whole) split into 7 parts, 7 would be your bottom number (as the 9 is here). If you are 4 parts and were left with 3 parts, 3 would be your top number (as the 11 is here). Seeing as 11 is bigger than 9, you have to imagine 2 pizzas. Each is split into 9, and you have 11 parts altogether. Thsi is 1 whole pizza and 2 extra parts, making the fraction 1 and 2/9. This is jaut another way to write 11/9 but I find it easier to look at.

The answer?

So. We have established that 11/9 = 1 & 2/9

And that 2 cubed (with the small 3 on it) = 8.

Amd the square roots of 5, 11 and 20 are approximately (Not exactly, but close enough) the following:

5. 2.2

11. 3.3

20. 4.4

So this leaves us a bunch of numbers to put in order from smallest to largest. This is fairly easy. It's not the second one. 8>3.3. It's not the third one. 8>2.2. It's not the fourth one. 1 & 2/9 may be smaller than 8, but 2.2 isn't. So this leaves the first order.

*Note that the symbol > means greater than or bigger than. So 8>2 means 8,is bigger than 2.

Answer:

10

Step-by-step explanation:

The common ratio of the geometric sequence 10,60, 360,... is 6.

An arithmetic sequence is a set of numbers in which every no. next to the previous number has the same common difference

d = aₙ - aₙ₋₁ = aₙ₋₁ - aₙ ₋₂.

In a geometric sequence numbers are written in the same constant ratio(r).

It means every next number is a multiple of a common constant and the previous number.

r = aₙ/aₙ₋₁ = aₙ-₁/aₙ₋₂.

Given, A geometric sequence 10,60, 360,...

We know the common ratio r in a geometric sequence is

r = aₙ/aₙ₋₁ = aₙ-₁/aₙ₋₂.

Therefore,

The common ratio in this geometric sequence  10,60, 360,... is,

= 60/10 = 360/60 = 6.

So, The common ratio is 6.

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Answer:

it would take him 1.5 hours (an hour and 30min.)

Step-by-step explanation:

120 divided by 8 = 15

15 divided by 10 = 1.5

The number of hours he would need to complete this job is 2.5 hours.

"PEDMAS is an order of operation used in mathematics to deal easily with complex calculations. It states that we start solving any arithmetic expression by solving the terms written in parentheses or brackets and then we simplify exponential terms and move ahead to division and multiplication operations and then, at last, we can find the answer by solving addition and subtraction operations."

According to the question

A construction worker needs to move 120 feet squared (3) of dirt by using a wheelbarrow.

One wheelbarrow load holds 8 feet squared(3) of dirt and each load takes him 10 minutes to complete.

Writing the above statement in mathematical form

= (120 ÷ 8) × 10

By using PEDMAS rule, we get

= 15 × 10

= 150 mins

= 150 ÷ 60

= 2.5 hours

Thus, the number of hours he would need to complete this job is 2.5 hours.

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Answer:

whats rhe question my g

Answer:

There are 14 horses and 21 chickens.

Step-by-step explanation:

First, you have to make expression for horse and chicken. So we can let x be the number of horses and y will be the number of chickens. Next, given that the total number of feet for both animals is 98 so you have to make simultaneous equation :

[tex]4x + 2y = 98[/tex]

( horse has 4 feet and chicken has 2 feet )

There are a total of 35 heads so the other equation will be :

[tex]x + y = 35[/tex]

Lastly, you have to solve it :

[tex]4x + 2y = 98[/tex]

[tex]2(2x + y) = 98[/tex]

[tex]2x + y = 49 - - - (1)[/tex]

[tex]x + y = 35 - - - (2)[/tex]

[tex](1) - (2)[/tex]

[tex]2x + y - x - y = 49 - 35[/tex]

[tex]x = 14[/tex]

[tex]substitute \: x = 14 \: into \: (2)[/tex]

[tex]14 + y = 35[/tex]

[tex]y = 35 - 14[/tex]

[tex]y = 21[/tex]

Answer: 50

Step-by-step explanation: All you need to do is subtract $100 from $150, and you'll get 50 as your answer. Hope this helps!

Answer:

1/2

Step-by-step explanation:

First create like dominators

2/3 -1/6  = 4/6 - 1/6

simplify using subtraction

4/6 - 1/6 = 3/6

Simplify the answer

3/6 = 1/2

Answer:

1/2

Step-by-step explanation:

2/3 - 1/6

Subtract the two fractions:

2/3 - 1/6 = 1/2

The answer we get is:

1/2

Divide the numerator by the denominator for the decimal form:

1 ÷ 2 = 0.5

0.5 is our decimal form.

1/2 and 0.5 are our answers.

Hope you learned from this answer!

Answer:

IM BACK!!!!

The answer is *DRUMROLLLLLLLL* B

jk

its 1 lol

Step-by-step explanation:

Plug in -8 to x and you end up multiplying -8 by 1/2 which is pretty simple but the Muhammad ibn Musa al-Khwarizmi guy invented Algebra, Gottfried Wilhelm Leibniz invented functions, and Brahmagupta of India invented addition, so thanks to them, you can solve this question. -8 times 1/2 is -4 and -4 plus 5 equals 1.

Hope this helps

Answer:

true

Step-by-step explanation:

it equals to

x1= -1

and

x2= 1

Answer:

Step-by-step explanation:

y=x²-1 is not a function for every value of y , x has more than one value

ex: if x=-1 , y=(-1)²-1 then y=0

if x=1 then y=0

Answer:

C:      7(x+2)-3x = 2/3(6x+3)

Step-by-step explanation:

Graphing both lines shows that they are parallel to each other.

Answer:

There ya go love

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

because thats how u get to 13