2/5 divided 1/2 as a unit rate

Answer:

Step-by-step explanation:

2.38 km x 10^4 = 23,800 decimeters

There is no solution. The output of this equation is equal to -10 = 0 which is obviously not true.

Answer:

3.16 square units

Step-by-step explanation:

Find the area of the triangle with vertices: Q(-5,5,-3), R(-6,8,-4), S(-8,2,-4).

Step 1

We find QR and QS

QR = R - Q

= R(-6,8,-4) - Q(-5,5,-3)

= (-1, 3, -1)

QS = S - Q

= S(-8,2,-4) - Q(-5,5,-3)

= (-3, -3, -1)

Step 2

QR × QS

(-1, 3, -1) × (-3, -3, -1)

Using the formula:

a x b = (a2b3 – a3b2)i + (a3b1 – a1b3)j + (a1b2 – a2b1)k

Where a = (a1, a2, a3)

b = (b1, b2, b3)

QR = a

QS = b

(-1, 3, -1) × (-3, -3, -1)

a x b = (a2b3 – a3b2)i + (a3b1 – a1b3)j + (a1b2 – a2b1)k

= ((3 × -1) – (-1×-3))i + ((-1)×-3) – (-1) × -1)j + (-1 × -3) – (3×-3)k

= (-3 - 3)i + (3 – 1)j + (3 – 9)k

= 0i + 2j - 6k = (0,2,-6)

QR × QS = (0,2,-6)

Area of the triangle = √0² + 2² + 6²/ 2

= √0 + 4 + 36/2

= √40/2

= 6.324555320336759 /2

3.1622776602 square units

Approximately = 3.16 square units

Answer:

X=5

Step-by-step explanation:

Answer:

95/99

Step-by-step explanation:

khan

Answer:

310

Step-by-step explanation:

least money 19.95

Most money = 39.95

Mean = (least+most)/2 = 29.95

money for half people = 5 × (mean) 29.95

Amount of money for half people = 149.75

Lower limit for amount of the other half = 19.95 × 5 = 99.75

The Upper limit for the amount of the other half = 39.95 × 5 = 199.75

Mean = (99.75 + 199.75)/2 = 149.75

Total money spent (Mean) = 149.75 + 149.75 = 299.5

The Best estimate is B) 310 because it is closest to 295.5

A mean is an arithmetic average of a set of observations. The correct option is D.

A mean is an arithmetic average of a set of observations. It is given by the formula,

Mean = (Sum of observations)/Number of observations

To make the calculations easy let's round off the given numbers. Therefore, we can write the values as,

Now, the mean and the money for half the people can be written as,

Mean = (least + most)/2 = 60

money for half people = 5 × 60

Therefore, the amount of money for half people will be,

Amount of money for half people = 300

Lower limit for amount of the other half = 29.95 × 5 = 149.5

The Upper limit for the amount of the other half = 89.95 × 5 = 449.75

Mean = (149.75 + 449.75)/2 = 299.6

Total money spent (Mean) = 299.6 + 299.6 = 599.25

Hence, The Best estimate is $660. This is because it is closest to 599.25.

Learn more about Mean here:

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(-2,2)

Just took the quiz, this is 100% correct.

Please mark brainliest! :)

The constant function is - f(x) = -2 in the interval  x ∈ [-2, 4].

We have a graph of a function f(x).

We have to determine the interval on which this function is constant.

A constant function is a function having the same value of range for different values of the domain. Mathematically -

y = f(x) = k     [ k is constant ]

According to the question, we can see from the graph that -

The value of f(x) is constant, and is equal to f(x) = -2 between the points -2 and 4 on the x - axis.

The function in this interval can be given by -

f(x) = -2          where  x ∈ [-2, 4].

Hence, the constant function is - f(x) = -2 in the interval  x ∈ [-2, 4].

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Answer:

1:2

Step-by-step explanation:

Answer:

Step-by-step explanation:

SUPPLEMENTAL INSTRUCTION PROGRAMS

- Students in a large statistics course are randomly divided into a control group and an experimental/treatment group. At the end of the term, each student's score in the course is examined

(A) The scores from the SI (Experimental) group are not a sample from an existing population. They are data from a group in a sample, hence the sample here is the number of students tested in this experiment and that equates to all the students in the large Statistics course/class.

- The relevant conceptual population would be all students in the university, since the general purpose or statement of this experiment is to see the effect of SI programs implemented in universities.

(B) The advantage of the random (unintentional) division of the students into control and experimental groups is that results or scores from the groups will be unbiased.

If you let each student choose a group, there is a high probability that the serious students will all join the SI group while the unserious ones will choose to be in the control group.

There is also a high probability that brilliant/pompous students will ignore the supplemental instruction program while students with low and medium intelligence quotient (IQ) will embrace it.

It is also possible that students will join whatever group their friends join.

These and other biases will defeat the aim of the experiment.

(C) The investigators didn't put all students in the sample into the experimental group because the difference or impact of the SI program needs to be known; whether positive or negative. Dividing them into the 2 groups lets the investigators know if there is a difference in the scores of students in the two groups.

Step-by-step explanation:

1. 7 (-6)=42

after 7 weeks the price will be reduced by 7 time

the price will be reduced $42

Answer:

a. 0.5

b. -0.4 and 0.4

c. -3 1/3 and -3.23

Hope this helps!

Answer:

55

Step-by-step explanation:

655,000 has 55 thousands. Hope this helps

There are 55 thousands in 655,000.

There are 6 hundred thousands, and 55 thousands. Hope this helps!

Step-by-step explanation:

what is Descriptive statistics?

Descriptive statistics involve the use of fundamental information from a dataset to make a summary, general, or overview report of the information from the given data. in descriptive statistics, results are collected from data directly without making direct inference

with descriptive statistics, you are simply describing what is or what the data shows

How important is descriptive statistics?

Descriptive statistics aids in the presentation of data in a precise, understandable manner, which allows a simpler interpretation of the data.

hence with descriptive statistics storytelling for data   becomes very easy as we can visualize results and make reports through Descriptive statistic

Answer:

1. 2448 do 612x4

2.she got $23 because he has four children and splits all do 72 divide by 4 and add 5 and thats ur answer

hope this helped

Answer:

x = 0.

Step-by-step explanation:

(x-(x-y))-((x-y)-x)=14

Remove the parentheses from the inside out:

(x - x + y) - (x - y - x) = 14

x - x + y - x + y + x = 14

x - x - x + x + 2y = 14

0 + 2y = 14

x = 0 and y = 7.

Answer:

2 + 8 -7 = 3

Hope it helps.......

Answer:

The formula says that the sum of the first n terms of our arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.

Answer:

En caso de un tamaño de producción de 19,200 toneladas anuales, el costo de inversión total ascenderá a $3,999,936.

Step-by-step explanation:

Dado que la inversión inicial será de $ 2,500,000 para un tamaño de planta de 12,000 toneladas anuales, se estima que cada tonelada requiere una inversión de $208.33 (2,500,000 / 12,000).

Por lo tanto, en caso de una producción anual de 19,200 toneladas, el costo de inversión aumentará según lo establecido en la siguiente multiplicación:

208.33 x 19,200 = X

3,999,936 = X

Por lo tanto, en caso de un tamaño de producción de 19,200 toneladas anuales, el costo de inversión total ascenderá a $3,999,936.

Answer:

1. The height if the box is x.

2. The length of the box is 8 - 2x

3. The width of the box is 12 - 2x

4. The volume of the box is   4x(6 - x)(4 - x)

Step-by-step explanation:

1. Since the squares of length x are cut from the corners of the cardboard, the height of the box is the length of a square which is x.

2. Since we have 8 inch by 12 inch, its length is 8 inches and its width 12 inches.

Since squares of x length are cut from the corners of the cardboard, the length of the box is 8 - 2x

3. Since we have 8 inch by 12 inch, its length is 8 inches and its width 12 inches.

Since squares of x length are cut from the corners of the cardboard, the width of the box is 12 - 2x

4. The volume of the box is V(x) = length × width × height = (12 - 2x)(8 - 2x)x = 2 × 2x(6 - x)(4 - x) =  4x(6 - x)(4 - x)

Answer:

x + 6 + 8 = 2x – x + 14 = True

Step-by-step explanation:

(all values of x are solutions)

Answer: 5 calories

Step-by-step explanation:

Given the data:

Minute ____calorie burned

40__________200

80__________400

120_________ 600

160_________ 800

We need to find the rate at which calorie is burned :

Rate of burn = (Number of calorie burned/ time taken)

Take any of the points :

Time = 80 ; calorie burned = 400

Rate of burn = (400 calorie / 80 minute )

Rate of burn = 5calorie/minute

If time = 1 minute ; rate = 5

Calorie burned in 1 minute :

Amount of calorie = rate of burn × time taken

Amount burned in 1 minute = 5 × 1 = 5 calories

Hence, amount of calorie burned in one minute is 5 calories.

Answer:

5

Step-by-step explanation:

Maps Testing I have done it.

Answer: 0.0546875

Step-by-step explanation:

The number of times the coin landing head 8 out of 10 is simply:

C(10, 8)/2^10. At least 8 means, 8 or more. Since the events here are dependent on themselves the answer would be:

[ C(10, 8) + C(10, 9) + C(10, 10) ] / 2^10 = 56/1024 = 0.0546875

Answer:

1. sinα = +2√5/5 2.  cosα = +√5/5 3. cotα = +1/2 4. secα = +√5 5. cosecα = +√5/2.

Step-by-step explanation:

1. Since tan(α) = 2 and 1 + cot²α = cosec²α

1 + 1/tan²α = 1/sin²α

1 + 1/2² = 1/sin²α

1 + 1/4 = 1/sin²α

5/4 = 1/sin²α

sinα = ±√(4/5)

sinα = ±2/√5

sinα = ±2√5/5

Since 0<α<π/2, sinα = +2√5/5

2. sin²α + cos²α = 1

(2/√5)² + cos²α = 1

4/5 + cos²α = 1

cos²α = 1 - 4/5

cos²α = 1/5

cosα = ±1/√5

cosα = ±√5/5

Since 0<α<π/2, cosα = +√5/5

3. cotα = 1/tanα = 1/2

Since 0<α<π/2, cotα = +1/2

4. secα = 1/cosα = 1/±1/√5 = ±√5

Since 0<α<π/2, secα = +√5

5. cosecα = 1/sinα = 1/±2/√5 = ±√5/2

Since 0<α<π/2, cosecα = +√5/2

Answer:

21

best of luck!

Answer:

21

Step-by-step explanation:

1 + 2 = 3

3 + 3 = 6

6 + 4 = 10

10 + 5 = 15

15 + 6 = 21

Hope it helps

Mark it as Brainliest!

Answer:

Perimeter = 588ft (given), Width of yard = 73ft

Step-by-step explanation:

The distance around a yard is the perimeter of the yard, so we know that the perimeter of the yard is 588ft. In order to find the length and width, we need to make an equation so we can solve for one of them. Since the length is 2 more than 3 times the width, we can represent it as 3w+2, where w is the width. This ensures we only have one unknown to solve for as we only have one equation. Since perimeter is the distance around the yard, it is calculated by adding the length of the 2 widths to the length of the 2 lengths, hence 588ft = 2w + 2l, the l we replace though as we can only solve for one unknown, so now we have:

2w + 2(3w+2) = 588

Now we can start solving for the width!

Firstly we need to expand the bracket which we do by multiplying the 2 by all the contents inside the bracket, so:

2w + 2*3w + 2*2 = 588

which equals:

2w +6w +4 = 588

Now we combine terms and move the 4 to the other side so we can solve for w:

8w + 4 -4 = 588 - 4

8w = 584

Now we just divide both sides by 8 to get:

w=73

The width of the yard is 73ft.

Hope this helped!

Answer:

x=1

Step-by-step explanation:

Answer:

6=6x (x=1)

Step-by-step explanation:

7x-3+3x=4 (4x-1)-5

7x-3+3x=16x-4-2

So I have just multiplied out the brackets on the right side 4×4x and 4×1.

7x+3x=16x-4-2

Here I have just added the -3 from the left onto the right changing it to a positive and onto the -5 therefore getting -2.

10x=16x-3

Now I just added the numbers together on each side like 7x+3x and -4-2.

10x+6=16x

This is just moving the -6 onto the left side so we get a positive 6.

6=6x

I have simply done 16-10.

Answer:

he now owes $385.63

Step-by-step explanation:

owes $412.42

returns an item for $48.38

-412.42 + 48.38 = -364.04

he now owes $364.04

returns an item for $49.57

-364.04 + 49.57 = -314.47

he now owes $314.47

makes a purchase of $34.10

-314.47 - 34.10 = -348.57

he now owes $348.57

makes a purchase of $37.06

-348.57 - 37.06 = -385.63

he now owes $385.63

Answer:

Nah you wrong

Step-by-step explanation:

You have got

to start thinking bee, my friend.

- Thinking bee!

- Me?

Hold it. Let's just stop

for a second. Hold it.

I'm sorry. I'm sorry, everyone.

Oan we stop here?

I'm not making a major life decision

during a production number!

All right. Take ten, everybody.

Wrap it up, guys.

Answer:

Yes

Step-by-step explanation:

Initially it is provided that out of a total of 72 people 60 planned to vote for Jenny. This ratio as percentage shall be = [tex]\frac{60}{72} \times 100[/tex] = 83.33%

Later on the number of seniors polling in the survey increased to 80.

Now, out of 80 seniors, 56 planned to vote for Jenny.

In the percentage form this shall be

[tex]\frac{56}{80} \times 100 =[/tex] 70%

Thus, there is a change of 83.33% - 70% = 13.33%

This shall be considered a significant drop as it is more than 10% in an audience size of less than 100.

Answer:

see below

Step-by-step explanation:

(2 · x) · 6 = 2 · (x · 6) → Associative property of multiplication, this property states that (a · b) · c = a · (b · c), basically, it doesn't matter what order you multiply in, the result will always be the same.

3(3x + 2) = 9x + 6 → Distributive Property, this property states that a(b + c) = a · b + a · c.

(7 + 1) + 5 = 5 + (7 + 1) → Commutative property of addition, this property states that a + b = b + a which means that you can "flip" or "switch the positions of" the quantities being added and you will still get the same result.

(7 · x · 3) = (7 · 3 · x) → Commutative property of multiplication, just like the commutative property of addition, this states a · b = b · a, in other words, you can "flip" or "switch the positions of" the quantities being multiplied and you will get the same result.

(9 + 2) + 3 = 9 + (2 + 3) → Associative property of addition, just like the associative property of multiplication, this property states that (a + b) + c = a + (b + c), in other words, it does not matter which order you add in, the result will always be the same.

Answer: 9

do the 3 times table

Step-by-step explanation: if 3 in 1 than 9 in 3

hoped this helped let me know if it did