is 3.8 rational or irrational

Answer:

Answer would be $366.70

Step-by-step explanation:

220/60%=366.70

Hope it helps

Answer:

-3/8= -6/16=-9/24=-12/32=-15/40....

3/8=6/16=9/24=12/32=15/40=18/48=21/56.....

Do you still need help if so I can solve it for you

Answer:

12 people!

Step-by-step explanation:

each pizza is cut into 4 pieces, and there are 3 whole pizzas. 4 times 3= 12!

Answer:

12

Step-by-step explanation:

Since we have 3 pizzas, and we know that the pizzas are cut 1/4, We can multiply 3 to 4. We should get 12!

Deeper explanation:

We have 3 pizzas and they're cut 1/4. Draw 3 pizzas cut by fourths. Now count the pizza slices. We have 12 slices!

Answer:

this is the formula for area of a trapezoid

Answer:

that formula is the area of a triangle

Step-by-step explanation:

I'm not sure what you are asking but I hope it helps.

Answer:

[tex]\boxed {x = 7}[/tex]

Step-by-step explanation:

[tex]FJ[/tex] and [tex]JH[/tex] is half of the whole measurement of [tex]FH[/tex]. So, to find the value of  [tex]x[/tex], you need to write an expression by using those measurements of both [tex]FJ[/tex] and [tex]JH[/tex]. Then, solve for [tex]x[/tex]:

[tex]FJ = 24[/tex]

[tex]JH = 3x - 3[/tex]

[tex]3x - 3 = 24[/tex]

-Solve:

[tex]3x - 3 = 24[/tex]

[tex]3x - 3 + 3 = 24 + 3[/tex]

[tex]3x = 27[/tex]

[tex]\frac{3x}{3} = \frac{27}{3}[/tex]

[tex]\boxed {x = 7}[/tex]

So, the value of [tex]x[/tex] is [tex]7[/tex].

Answer:

600000

Step-by-step explanation:

Answer:

600000

Step-by-step explanation:

10000×60

10000

×     60

---------------

1

× 6

----------------  (Eliminate all the zeros and than add them to the end of 1 × 6)                                                          

   600000

-------------------

Hope this was helpful!!!!

Answer:

a. d/2 = r; b. 65 miles per hour

Step-by-step explanation:

d = 2r

d/2 = r

130/2 = r

65 = r

Answer:

2*26=52

Step-by-step explanation: you can just use a calculator to find 2*26 and you will find that the answer to your question is 52.

Answer:

52

because you can add 26+26=52

Answer:

52 stickers

Step-by-step explanation:

I hope that this helps you. :)

Answer:

i belive she will have 11.90 i think

Step-by-step explanation

Answer:

Step-by-step explanation:

.75 * 2= 1.50

1.00 * 3 = 3.00

1.40 * 5 = 7.00

7.00+3.00+1.50=11.50

20.00 - 11.50 = 8.50

Answer: x = 8

Step-by-step explanation: 4x + 7 ≤ 39, first subtract 7 to get 4x ≤ 32, then divide on both sides by 4 to get x ≤ 8.

Hope this helps!

Please Mark Brainliest!

(I play FN too and I am Champs)

Answer:

B 30 min

Step-by-step explanation:

Answer:

0.0520

Step-by-step explanation:

In this expression, we conclude that 1 is the least significant figures after decimal in this problem.  The answer will be 0.0520.

Significant figures is the figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

The rule apply for the multiplication and division is that the least number of significant figures in any number of the problem determines the number of significant figures in the answer.

The rule apply for the addition and subtraction is that the least precise number present after the decimal point determines the number of significant figures in the answer.

The given expression is: 0.0702 - 1.35

0.0702 - 1.35

= 0.0520

In this expression, we conclude that 1 is the least significant figures after decimal in this problem.

The answer will be 0.0520.

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Answer: 16.8

Hope this helps!

Answer:

18=114-6b

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

The value of negative square root of 7 can be determined by either using a calculator or even just solely thinking about it. If we think about, negative square root of 4 is -2 and negative square root of 9 is -3. Therefore, the answer is C. We can also use a calculator to confirm the answer. -√7 is approximately -2.65 and therefore is a value between -2 and -3 which is point C.

The point C (-2.4) best approximates the value of negative square root of 7 on the given number line.

A number system is defined as a system of writing to express numbers.

The square root of 7 is approximately 2.65, so the negative square root of 7 is approximately -2.65.

Among the given points on the number line, the point that is closest to -2.65 is point C, which is at -2.4.

Therefore, point C (-2.4) best approximates the value of negative square root of 7 on the given number line.

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Answer:

y = -40

Step-by-step explanation:

y/-4 + 5 = 15

y/-4 = 10

y = -40

Hey there!☺

[tex]Answer:\boxed{y=-40}[/tex]

[tex]Explanation:[/tex]

[tex]\frac{y}{-4}+5=15[/tex]

In our first step, we will simplify both sides of the equation:

[tex]\frac{x-1}{4}y+5=15[/tex]

Now we will subtract 5 from both sides:

[tex]\frac{-1}{4}y+5-5=15-5\\\frac{-1}{4}y=10[/tex]

Now in our last step, we will multiply both sides by 4/(-1):

[tex](\frac{4}{-1})\times(\frac{-1}{4}y)=(\frac{4}{-1})*(10)\\ y=-40[/tex]

y=-40 is your answer.

Hope this helps!☺

Answer:

Set of four data pairs with correlation coefficient r= -0.8 reasonable linear regression data set.

Step-by-step explanation:

Linear regression is a primary type of predictive analysis. It describes does a variable does a useful job. Which variable is significant.

Set of nine data pairs with correlation coefficient r = -0.4

Set of five data pairs with correlation coefficient r= 0.3

Set of four data pairs with correlation coefficient r= -0.8

Setoff six data pairs with correlation coefficient r = 0.6

A setoff four data pair with correlation coefficient r = -0.8 is the valid data set.

Because

r = -0.8

r2 = 0.64,

This is very close to 1 as compared to any other data pair.

Hence, Set of four data pairs with correlation coefficient r= -0.8 reasonable linear regression data set.

Answer:

C "a set of four data pairs with a correlation coefficient r = –0.8"

Step-by-step explanation:

If this figure was a parallelogram, then the opposite angles would be congruent. This would make angles B and D the same measure

angle B = angle D

x^2+20 = 7x+50

x^2+20-7x-50 = 0 .... get everything to one side

x^2-7x-30 = 0

(x-10)(x+3) = 0 ... see note below

x-10 = 0 or x+3 = 0

x = 10 or x = -3

Note: In this step is where the factoring occurs. To factor, we need to find two numbers that multiply to -30 which is the last term, and also add to -7 which is the middle coefficient. This is a trial and error process. You should find that -10 and 3 both multiply to -30 and add to -7. I suggest making a table as shown below (attached image) to list out all the possible choices.

Perhaps a much more efficient route is to use the quadratic formula.

-----------------

We found two possible solutions for x. If x = 10, then 7x+50 is 7(10)+50 = 120 which is an obtuse angle. If x = -3, then 7x+50 = 7(-3)+50 = 29 which is acute.

Assuming the diagram is drawn to scale, this means angle D is obtuse and we'll go with x = 10 and 7x+50 = 120

Angles A and D add to 180 degrees. This is true for any pair of adjacent angles in a parallelogram.

A+D = 180

A+120 = 180

A = 180-120

-----------------

This answer is based on the assumption that the diagram is drawn to scale and that this quadrilateral is a parallelogram.

Answer:

[tex]\angle A=60\textdegree[/tex]

Step-by-step explanation:

So we have the following parallelogram and we wish to solve for ∠A.

To do so, we will need to solve for x first. Look carefully at the parallelogram...

Notice that ∠A and ∠D are consecutive angles. In other words:

[tex]\angle A+\angle D=180[/tex]

Since we have an equation for ∠D, substitute:

[tex]\angle A+7x+50=180[/tex]

Notice that ∠A and ∠B are also consecutive angles. So:

[tex]\angle A+\angle B=180[/tex]

We know the equation for ∠B. Substitute:

[tex]\angle A+x^2+20=180[/tex]

Since both equations equal 180, we can set them equal to each other:

[tex]\angle A+7x+50=x^2+20+\angle A[/tex]

Let's subtract ∠A from both sides. This gives us:

[tex]7x+50=x^2+20[/tex]

Now, we can solve for x. This is a quadratic, so let's move all the terms to one side. To start off, let's subtract 50 from both sides:

[tex]7x=x^2-30[/tex]

Now, let's subtract 7x from both sides:

[tex]0=x^2-7x-30[/tex]

Solve for x. We can factor.

Here's the trick to factoring. If we have the following:

[tex]0=ax^2+bx+c[/tex]

The we will need to find two numbers, p and q, such that:

[tex]p+q=b\text{ and } pq=ac[/tex]

In our equation, a is 1, b is -7, and c is -30.

So, we want two numbers that sum to -7 and multiply to (1)(-30)=-30.

We can use -10 and 3. -10+3 is -7 and -10(3) is -30. So, let's substitute our b term for -10x and 3x. In other words, we have:

[tex]0=x^2-7x-30[/tex]

Substitute -7x for 3x-10x. This gives us:

[tex]0=x^2+3x-10x-30[/tex]

This is equivalent to our old equation.

Now, we can factor. Factor out a x from the first two terms:

[tex]0=x(x+3)-10x-30[/tex]

And factor out a -10 from the two last terms:

[tex]0=x(x+3)-10(x+3)[/tex]

Since the expressions within the parentheses are the same, we can use grouping to acquire:

[tex]0=(x-10)(x+3)[/tex]

Note that this is essentially the distribute property. If we distribute, we will get the same as above.

Zero Product Property:

[tex]x-10=0\text{ or }x+3=0[/tex]

Solve for x:

[tex]x=10\text{ or } x=-3[/tex]

So, we have two cases for x. Each case will yield a different answer for ∠A.

Case I: x=10

Use our original equation of:

[tex]\angle A+7x+50=180[/tex]

Substitue 10 for x:

[tex]\angle A+7(10)+50=180[/tex]

Multiply:

[tex]\angle A+70+50=180[/tex]

Add:

[tex]\angle A+120=180[/tex]

Subtract 120 from both sides:

[tex]\angle A=60\textdegree[/tex]

So, in our first case, ∠A is 60°

Case II: x=-3

Again, same equation:

[tex]\angle A+7x+50=180[/tex]

This time, substitute -3 for x. This yields:

[tex]\angle A+7(-3)+50=180[/tex]

Multiply:

[tex]\angle A-21+50=180[/tex]

Add:

[tex]\angle A+29=180[/tex]

Subtract 29 from both sides:

[tex]\angle A=151\textdegree[/tex]

So, in our second case, ∠A is 151°

However, 151° doesn't seem likely with how the figure is drawn.

Therefore, our final answer is 60°.

And we're done!

Edit: Fixed Incorrect Answer

Answer:

Both Anoki and David are correct. Both expressions are equivalent to the difference between the measurements and are always positive because they give the absolute value of the difference.

Sorry for answering so late.

Step-by-step explanation:

Both of their absolute value expression is correct because the final height will always be same.

Given,

At a theme park, a person must be a certain height to ride a rollercoaster.

A person must be h inches tall, plus or minus 1.5 inches.

Anoki says the absolute value expression | 1.5 - h | represents an acceptable height.

David says the absolute value expression I h - 1.5 | represents an acceptable height.

We have to find who is correct in expressing the absolute value.

It is expressed in | x |.

Where x is any number.

The value of x can be negative or positive.

The absolute value will always be a positive value.

|m| =  and |-m| = m.

We have,

Anoki absolute value expression: | 1.5 - h |

David absolute value expression: | h - 1.5 |

Suppose let us consider h = 72.

Now,

| 1.5 - h | = | 1.5 - 72 | = | -70.5 | = 70.5

| h - 1.5 | = | 72 - 1.5 | = | 70.5 | = 70.5

We see that both have the same value.

Thus both of their absolute value expression is correct.

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Answer:

The second option with the ordered pairs.

Step-by-step explanation:

A function is basically when there is one and only one output for every input. Basically meaning there is only one x for every y. If you really want to learn more about functions, go to khan academy, they can explain it better than I can.

Answer:

divide 350 m/ by 180s and you get 1.9 hours

Answer:

400

Step-by-step explanation:

The least common multiple (LCM) of two or more non-zero whole numbers is the smallest whole number that is divisible by each of those numbers. In other words, the LCM is the smallest number that all of the numbers divide into evenly.

Answer:

400

Step-by-step explanation:

I used the cake/ladder method. The screen shot below shows the cake/ladder method for this problem.

The last part not shown in the photo, is that you have to multiply the highlighted part: 2 × 2 × 5 × 4 × 1 × 5 = 400

I hope this helps!

Answer:

-1

Step-by-step explanation:

Answer:

The answer is mc 2.75 degrees and ma is 80 degrees.

Step-by-step explanation:

Answer:

Step-by-step explanation:52.75

Answer:

120 f

Step-by-step explanation:

Given :

A point x whose distance from A is 5 1/3 units.

distance between x and B is 2/3 units.

To Find :

Distance between A and B if they both are on left side of straight line from x.

Solution :

Let distance between A and B is d :

[tex]d=|A-B|\\\\d=|5\dfrac{1}{3}-\dfrac{2}{3}|\\\\d=|\dfrac{16}{3}-\dfrac{2}{3}|\\\\d=\dfrac{14}{3}\\\\d=4\dfrac{2}{3}\ units[/tex]

Therefore, distance between A and B is 4 2/3 units.

Hence, this is the required solution.