please help soon!! will award brainliest

Answer:

19/1

Step-by-step explanation:

Hi,

Any whole number written as a fraction is simply that number over one :)

If you were to write 80 as a fraction, it would be 80/1.

And so on...

I hope this helps <3

Answer:

6 pencils

Step-by-step explanation:

30/5=6

Answer:

[tex]x_{1} =[/tex] [tex]\frac{5 + \sqrt{10} }{3}[/tex]  and [tex]x_{2} =[/tex] [tex]\frac{5 - \sqrt{10} }{3}[/tex]

Step-by-step explanation:

3x^2-10x+5=0

[tex]x_{1}[/tex] = [tex]\frac{10 + \sqrt{10^{2}-4*3*5 } }{2*3}[/tex]                  [tex]x_{2} =[/tex] [tex]\frac{10 - \sqrt{10^{2}-4*3*5 } }{2*3}[/tex]

[tex]x_{1} =[/tex] [tex]\frac{10 + \sqrt{100-60} }{6}[/tex]                      [tex]x_{2} =[/tex] [tex]\frac{10 - \sqrt{100-60} }{6}[/tex]

[tex]x_{1} =[/tex] [tex]\frac{10 + \sqrt{40} }{6}[/tex]                            [tex]x_{2} =[/tex] [tex]\frac{10 - \sqrt{40} }{6}[/tex]

[tex]x_{1} =[/tex] [tex]\frac{10 + 2\sqrt{10} }{6}[/tex]  / 2                    [tex]x_{2} =[/tex] [tex]\frac{10 - 2\sqrt{10} }{6}[/tex]  / 2

[tex]x_{1} =[/tex] [tex]\frac{5 + \sqrt{10} }{3}[/tex]                             [tex]x_{2} =[/tex] [tex]\frac{5 - \sqrt{10} }{3}[/tex]

Answer:

More info is needed to do this

I'll help you once that info is given

Answer:

needs more directions and info

Step-by-step explanation:

Answer:

- 60° (or - π/3)  or 240° and 300°

Step-by-step explanation:

sin⁻¹ ((-√3) /2) : in third quadrant and 4th quadrant will produce negative sine value

sin⁻¹ ((-√3) /2) = - 60° (or - π/3)  or 240° and 300°

Answer:36

Step-by-step explanation: 6 sided dice = 6 possible outcomes

6×6=36

The required number of outcomes is 36 after rolling all six dice. Option B is correct.

Jane has to roll a set of six standard dice and record the results of each
trial. She wonders how many different outcomes are possible after rolling all six dice. the total number of possible outcomes for each trial to be determined.

Probability can be defined as the ratio of favorable outcomes to the total number of events for a system of the certain events.

For 1 dice, sample space = { 1  2  3  4  5  6}
total possible outcome = 6
Now 6 dice roll at once and the total outcome = 6 * 6
                                                                                = 36
Meanwhile, Jane has a total of 36 outcomes.

Thus, the required number of outcomes is 36 after rolling all six dice. Option B is correct.

Learn more about probability here:

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Answer:

Step-by-step explanation:

Use formula:

1)

Correct choice is B

2)

Correct choice is A

Answer:

Step-by-step explanation:

a 30-60-90 right triangle is a right triangle because of the 90

the 30 and the 60 have to make 90 too since traingles make 180

30 + 60 + 90 = 180

so 30-60-90 is a right triangle.

Right triangles also can use pythagoran theorem, so the angle ratio is

30-60-90

but the side ratio is

a² + b² = c²

Answer: m ≥ 13

m + 7 ≥ 20

Step-by-step explanation:

you basically subract 7 from 20 and 7

7-7 will cancel each other out 20-7 will give you = 13

m ≥ 13 is your answer

Answer:

The margin of error for a 95% confidence interval is 0.199.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

Assume that the population standard deviation is 2.8.

This means that [tex]\sigma = 2.8[/tex]

760 millennials (18- to 33-year-olds)

This means that [tex]n = 760[/tex]

Give the margin of error for a 95% confidence interval.

[tex]M = z\frac{\sigma}{\sqrt{n}} = 1.96\frac{2.8}{\sqrt{760}} = 0.199[/tex]

The margin of error for a 95% confidence interval is 0.199.

Answer:

At least 26 questions to get around an 82% not 25 because that equals 78%

Step-by-step explanation:

Answer:

Kevin answered 24 questions correctly.

Kevin would have to answer 25.6 questions correctly to get more than 80%.

Answer:

Sofia will be 19 years old

Step-by-step explanation:

First:

What know that David is 30 right now.

David=30

We also know that David is 7 years older than Mark, meaning that David-7=Mark

30-7=23        -Mark

And last we know that Mark is 4 years older than Sofia So we would do 23-4 to get Sofia age,

23-4=19        -Sofia

So in conclusion...

SOFIA: 19  

MARK: 23

DAVID: 30

Answer:

4

Step-by-step explanation:

2+3+6+5 is 16 and since there are 4 numbers 16/4 is 4

Answer:

4

Step-by-step explanation:

To find average you must add up all of the numbers and then divide by the amount of numbers there are

2+3+6+5= 16

there are 4 numbers, so you do 16/4

16/4 = 4

Hope this helps!!

-Ketifa

Answer:

They are less than 1/2

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

15-14=1

Hope this helped!!

Step-by-step explanation:

3x-14 when x equals 5

3 (5) -14

15-14

x=1

Answer:

It already is rounded to the nearest percent, 60.

Step-by-step explanation:

Answer:

31.4

Step-by-step explanation:

taking π = 3.14

circumference = 3.14 × 10

Answer:

7 ([tex]y^{2}[/tex] + 6[tex]Z^{2}[/tex])

3a (x - 2y) - 4b(2y - x)

pq(p - 1) - [tex]r^{2}[/tex]( p - 1)

Step-by-step explanation:

(ii) 7y^2+35Z^2

=7(y^2+5Z^2)

(v) 3ax-6ay-8by+4bx

=x(3a+4b)-2y(3a+4b)

=(3a+4b)(x-2y)

viii)p^2q-pr^2-pq+r^2

=pq(p-1)-r^2(p-1)

=(p-1)(pq-r^2)

Answer:

5

Step-by-step explanation:

Answer and Explanation:

If, on the other hand, the graph "flexes" or "flattens out" to some degree when it goes to cross the axis, then the zero is of a higher multiplicity; that is, it'll be of multiplicity three, five, or higher.

When a graph doesn't start at 0, it means that the graphs before it is not shown.

For number 4, I'd suggest Graph 3.

For number 3, I'd suggest graph 1.

For number 5, Write something along the lines of "Graph 2 does not show the car stopping slowly, it stops suddenly. Then it starts going really fast and stops suddenly again."

I hoped this helped.

Answer:

Step-by-step explanation:

This is an arithmetic sequence because each term subtracted by the previous term is a constant called the common difference.

an=a+d(n-1) where a is the initial term and d is the common difference

a=-20 and d=-16+20=4 so

an=-20+4(n-1)

an=4n-24

The sum of an arithmetic sequence is the average of the first and last terms times the number of terms

sn=(a1+an)(n/2)

s30=(-20+4(30)-24)(30/2)

s30=1140

The sum of the first 30 terms of the sequence –20, –16, –12, –8, –4, . . . is obtained being 1140

Arithmetic sequence is a sequence where each consequtive term has a common constant difference.

An arithmetic sequence, therefore, is defined by two parameters, viz. the starting term and the common difference.

Let the starting term be 'a' and common difference be 'd', then we get the arithmetic sequence as:

[tex]\rm a, a+d, a+2d, \cdots[/tex]

The sum of the first 'n' terms of that sequence is is:

[tex]\rm a + (a+d) + (a+2d) + \cdots + (a+(n-1)d) = \dfrac{n}{2}[2a + (n-1)d ][/tex]

For this case, the series –20, –16, –12, –8, –4, . . . starts from a = -20,

and each next term is obtained by adding d = 4 in previous term.

Thus, the sum of the first n = 30 terms of that sequence is evaluated as:
[tex]S_n = \dfrac{n}{2}[2a + (n-1)d ]\\\\S_{30} = \dfrac{30}{2}[2(-20) + (30-1)(4) ] = 15(-40 +116) = 15 \times 76 = 1140[/tex]

Thus, the sum of the first 30 terms of the sequence –20, –16, –12, –8, –4, . . . is obtained being 1140

Learn more about arithmetic sequence here:

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Answer:

b

Step-by-step explanation:

The respiratory system basically help us breathe.

Answer:

lol dont know

Step-by-step explanation:

Answer:

Circumference: 69.11 m

Area: 380.13 m

Cos Milky said it. Trust Milky. Milky Smart.

Answer:

Length of the rectangle = 25 ft

Width of the rectangle = 5 ft

Step-by-step explanation:

Ratio of the width to the length is 1:5

So, let

Width = x

and length = 5x

Area of the rectangle = 125

[tex]x \times 5x = 125 \\ \\ 5 {x}^{2} = 125 \\ \\ {x}^{2} = \frac{125}{5} \\ \\ {x}^{2} = 25 \\ \\ x = \sqrt{25} \\ \\ x = 5 \: ft \\ \\ 5x = 5 \times 5 = 25 \: ft[/tex]

Length of the rectangle = 25 ft

Width of the rectangle = 5 ft

The length and the width of the rectangle are 25 ft and 5 ft respectively.

The area of a rectangle can be found by using the following formula:

Area = length * width

Let the constant be x, therefore the length is 5x and the width is x.

Area = length * width

125 = 5x*x

⇒125 = 5x²

⇒x² = 25

⇒x = √25

⇒x = 5

We can substitute the value of x to find the length and the width:

Length = 5x = 5*5 = 25 ft

Width = x = 5 ft

Thus, we have found the length and width of the rectangle to be 25 ft and 5 ft.

Learn more about the area of rectangles here: https://brainly.com/question/25292087

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Answer:

$600

Step-by-step explanation:

[tex]20\% \: of \: 750 \: is = [/tex]

[tex] \frac{20}{100} \times 750[/tex]

[tex] = 150[/tex]

Subtract 150 from 750 to get discount price

[tex]750 - 150 \\ = 600[/tex]

Therefore, the discount price is $600

Answer:

b

Step-by-step explanation:

Answer: 300 seconds

Step-by-step explanation:

Answer:

300, I don't know if you need the work for it