Which number is rational?

Answer:

addition, subtraction, multiplication

Step-by-step explanation:

If you add two polynomials, the result is a polynomial. If you subtract two polynomials, the result is a polynomial. If you multiply two polynomials, the result is a polynomial.

Answer:

Fraction 8/20

Step-by-step explanation:

So only 12 people don't use sugar so if we were to put a fraction for people who don't put sugar then it would be.

12/20

The 20 stands about how many people their are and the 12 stands for how many people don't put sugar.

So now we are supposed ot do peope who put sugar so it would look like this

8/20

How I got the 8 is that I took the 20 people and subtrack it with the people who don't get sugar which is 8 and 8 people use sugar so theirs our answers.

8/20

Answer:

b

Step-by-step explanation:

Answer:

6/7

Step-by-step explanation:

because it not that kid

The interval of hours represents the lifespan of the middle 68% of light bulbs, using the empirical rule is, 1210 hours to 1390 hours.

According to the empirical rule, also known as 68-95-99.7 rule, the percentage of values that lie within an interval with 68%, 95% and 99.7% of the values lies within one, two or three standard deviations of the mean of the distribution.

[tex]P(\mu - \sigma < X < \mu + \sigma) = 68\%\\P(\mu - 2\sigma < X < \mu + 2\sigma) = 95\%\\P(\mu - 3\sigma < X < \mu + 3\sigma) = 99.7\%[/tex]

Here, we had  where mean of distribution of X is \mu  and standard deviation from mean of distribution of X is \sigma

The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1400 hours and a standard deviation of 50 hours. Thus,

[tex]\mu=1300\\\sigma=90[/tex]

Using the empirical rule, the interval of hours represents the lifespan of the middle 68% of light bulbs is,

[tex]P(\mu - \sigma < X < \mu + \sigma) = 68\%\\P(1300- 90 < X < 1300+ 90) = 68\%\\P(1210 < X < 1390) = 68\%[/tex]

Thus, the interval of hours represents the lifespan of the middle 68% of light bulbs, using the empirical rule is, 1210 hours to 1390 hours.

Learn more about empirical rule here:

https://brainly.com/question/13676793

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Answer:

I’m pretty sure the vertex is -5,-4

The axis of symmetry:-5

The graph has a minimum point and not a maximum.

Step-by-step explanation:

Answer:

379.94 cm2 correct me if im wrong

Answer:

A) (x, y) → (x - 8, y)

Step-by-step explanation:

(3, 7) →  (-5, 7)

Without adding or subtracting any values, we can immediately tell that the y-value did not change, but the x-value did. With this, we are left with choices A and D.

A) (x, y) → (x - 8, y)

   (3, 7) → (3 - 8, y)

   (3, 7) → (-5, 7)

This matches our problem, and therefore, A is the correct answer.

Hope this helps!

Answer:

A) (x, y) → (x-8, y)

Explanation:

Present Point: (3, 7)

Future Point: (-5, 7)

The change be: (x, y)

Solve:

(3, 7) + (x, y) → (-5, 7)

change side

(x, y) → (-5, 7) - (3, 7)

simplify the following

(x, y) → (-8, 0)

Therefore, we identify this using (x - 8, y)

The set of transformations that would map the red triangle to the blue triangle are translation by 2 units up and 4 units left

From the graph, we have the following highlights:

This means that the transformation is 2 units up and 4 units left

Hence, the set of transformations that would map the red triangle to the blue triangle are translation by 2 units up and 4 units left

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Read more about transformation at:

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Answer:

  2 solutions

Step-by-step explanation:

In order to answer a question "based on the graph," we need to have a graph of the equation. A graph provided by a graphing calculator is attached.

The cubic intersects the x-axis at two distinct points.

There are two (2) distinct real solution to the equation. (x = -1, x = 2).

Answer:

Step-by-step explanation:

[tex]-5u^2+10u^2=(-5+10)u^2=5u^2[/tex]

Answer:20%

Step-by-step explanation:

Solution for 600 is what percent of 3000:

600:3000*100 =

( 600*100):3000 =

60000:3000 = 20

Now we have: 600 is what percent of 3000 = 20

Question: 600 is what percent of 3000?

Percentage solution with steps:

Step 1: We make the assumption that 3000 is 100% since it is our output value.

Step 2: We next represent the value we seek with x.

Step 3: From step 1, it follows that $100%=3000.

Step 4: In the same vein, x%=600.

Step 5: This gives us a pair of simple equations:

$100%=3000(1).

x%=600(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

100% / %=3000/600

Step 7: Taking the inverse (or reciprocal) of both sides yields

x%/100%=600/3000

--->=20%

Therefore, $600 is $20% of $3000.

Answer:

First one: median= 98

Second one: median= 105

Thrid one: median= 103

Step-by-step explanation:

The median is the middle number.

Answer:

86 5/8 square feet

Step-by-step explanation:

[tex]10 \frac{1}{2} \times 8\frac{1}{4} = \frac{21}{2} \times \frac{33}{4} = \frac{693}{8} = 86 \frac{5}{8} [/tex]

Answer:

38 cm

Step-by-step explanation:

The perimeter of the figure is the sum of the lengths of all its sides.

We have two unknown length, so let's find their lengths first.

x= 10 -6= 4 cm

y= 9 -2= 7cm

Let's add all the lengths together to find the perimeter:

Perimeter

= 9 +10 +2 +6 +7 +4

= 38 cm

Answer:

x = 1851851.851....

Step-by-step explanation:

Given statement:

2.7% of x equals 50,000.

When we convert the statement into an equation, we get;

⇒ 2.7% × x = 50,000

A percentage is always written as (Percent)/100 in fraction form. Thus;

⇒ 2.7/100 × x = 50,000

Using cross multiplication:

To determine the value of x, we need to isolate it. This can be done by dividing the cooeficient of x both sides.

Divide both sides by 2.7

Answer:

Percent in decimal form:

[tex]\sf 2.7\% = \dfrac{2.7}{100} = 0.027[/tex]

Therefore:

27% of X = 50000

[tex]\sf \implies 0.027 \cdot X=50000[/tex]

[tex]\sf \implies X=\dfrac{50000}{0.027}[/tex]

[tex]\sf \implies X=\dfrac{50000 \times 1000}{0.027 \times 1000}[/tex]

[tex]\sf \implies X=\dfrac{50,000,000}{27}\quad \textsf{(as a fraction)}[/tex]

[tex]\sf \implies X=1,851,852\quad \textsf{(nearest whole number)}[/tex]

Based on the curve ; The graph is:

       B. The curve is a many-to-one function.

Function--

A function is a relation in which each element is mapped to a single element i.e. no element is mapped to two different elements.

Also, the graph of a function satisfies the vertical line test i.e. any line passing through the domain and parallel to the y-axis should intersect the graph exactly once.

and one-to-one function--

A one-to-one function is such that no two elements have the same image i.e. any line passing through the co-domain and parallel to the x-axis should intersect the graph at most once.

Hence, by looking at the graph we see that the graph is not a straight line.

Hence, it is not a linear function.

           Hence, the correct answer is:

                   Option: B

Answer:

24m

Step-by-step explanation:

The distance from the top of the tank to the plate is the hypotenuse of the right angled triangle

[tex] \sin( \alpha ) = \frac{opp}{hyp} [/tex]

[tex] \sin(27.5) = \frac{16.5}{x} [/tex]

[tex]0.6992 = \frac{16.5m}{x} [/tex]

[tex]x = \frac{16.5}{0.6992} [/tex]

[tex]x = 23.59m[/tex]

[tex]x = 24m \: (nearest \: \: metres[/tex]

Answer:

It will cost Emily $40 to rent the bike for 6 hours.

Step-by-step explanation:

SOLUTION:

Total cost equals = (cost per hour × number of hours) + initial bike cost.

Let, y be total cost and x = renting a bicycle for x hours.

y=5x+10

To calculate Emily's cost for 6 hours, let x=6.

y=5(6)+10

y=30+10

y=40

It will cost Emily $40 to rent the bike for 6 hours.

It's

Add

Answer: i just need potins

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Plug in 1 for x and 7 for y.

7 ≤ 3(1) + 4 ⇒ 7 ≤ 7

≤ means less than or equal to

Answer:

Q2: J. all real numbers.

Q4: [tex]f(3)=-20[/tex]

Q15: [tex]y=-3x+5[/tex]

Step-by-step explanation:

Q2: J. All real numbers.

Range: It can be [tex]y\geq 1[/tex].

It can't be [tex]y\geq 2[/tex].

Domain: It can't be [tex]x\geq 1[/tex] because it is going from (-∞,+∞)

Q4:

[tex]f(x)=-2x^2+x-5,f(3)=?[/tex]

Plugin x with 3 into the equation.

[tex]f(3)=-2(3)^2+(3)-5\\f(3)=-2*9+3-5\\f(3)=-18+3-5=-20\\f(3)=-20[/tex]

Q15: point-slope form.

[tex]y-(y_1)=m(x-x_0)[/tex], plugin [tex](2,-1)=(x_0,y_0)[/tex] and m=-3

[tex]y-(-1)=-3(x-(2))\\y+1=-3(x-2)\\y+1=-3x+6\\y=-3x+5[/tex]

Answer:

6 burgers

Step-by-step explanation:

1.14/9 = 6

Answer:

Tax = $0.5236

Total = $8

Step-by-step explanation:

$7.48 * 0.07(tax rate) = $0.5236

$0.5236 is the add-on tax you will pay at a rate of 7%

Simply add $0.5236 to your bill before tax of $7.48 to find your total of $8.0036

8.0036 is too low to round to a monetary value, so in total you would pay

approximately $8

Answer:

A. 17

Step-by-step explanation:

The "mean" is the same as an average.

To find the mean, add all the numbers.

Then divide that sum by the total numbers you added.

18+23+9+16+30+16+7=119.

119/7= 17.  (We divided by 7 because we added 7 numbers)

Hope this helps!

Answer:

-11

Step-by-step explanation: