pls help i dont get it ​

Answer:

75%

Step-by-step explanation:

First find the number of boys.

80 - 20 = 60

Now find the percentage my taking the number of boys upon the total, times that by 100 which gives the percentage.

[tex]\frac{60}{80}[/tex] × 100 = 75%

Answer:

No.

Step-by-step explanation:

-2(3)-5=-6-5=-11

-2(3)-2(-5)=-6+10=4, not -4.

Answer:

21/56 in simplest form is 3/8

Step-by-step explanation:

Answer:

median = 2

mode = 0

Range = 10

Step-by-step explanation:

mark branliest

and if you need help just ask

Answer:

14 items

Step-by-step explanation:

What we know:

- it takes 7 seconds to process the payment

- for every item, it takes 1.5 seconds to scan

- in total, it took 28 seconds to ring up the customer

With these pieces of information, we can construct the following equation:

[tex]28=1.5x+7[/tex] when [tex]x[/tex] is equal to the number of items there is

Subtract both sides by 7

[tex]28-7=1.5x+7-7\\21=1.5x[/tex]

Divide both sides by 1.5

[tex]\frac{21}{1.5} =\frac{1.5x}{1.5} \\14=x[/tex]

Therefore, 14 items were being purchased.

I hope this helps!

Answer:

SA : 84.9cm³

Step-by-step explanation:

Formula : 4×pi×r² as well as 4pi r²

4 x pi x 2.6²=84.94866535

1dp : 84.9

Answer:

Mean: 10.3

Median: 12

Mode: 13

Range: 15

Step-by-step explanation:

First, let's define what all these terms mean.

Mean is the average of all the numbers in a set of data. Median is the number in the middle of a range whenever the numbers are put in ascending order. If there are two numbers in the middle instead of one, then take the average of those two numbers. Mode is the number that occurs the most in the set of data. Range is the difference between the largest and the smallest number in a set of data.

To make things a little easier overall, let's just go ahead and put all our numbers in ascending order, which will be as follows: 1, 6, 7, 7, 11, 13, 13, 13, 16, 16.

To find the mean, just add up all the numbers and divide by how many there are. So we'll add 1 + 6 + 7 + 7... and so on to get a total of 103. Next, we'll divide that number by 10 since there are 10 students. This gives us a mean of 10.3.

Next, we'll find the median. To find this, just figure out which number(s) is in the center of your data. Since we have an even number of terms (10), we'll have two numbers in the middle, being 11 and 13. To find our median from here, just add 11 and 13 and then divide by 2. 11 + 13 = 24 and then 24 / 2 = 12. This means that our median is 12.

Next, we'll find the mode. The mode is the number that is seen the most in a set of numbers. In our set, we see that there are three 13s. Since 13 is the most frequently used number in our set, this makes it the mode.

Finally, we'll find the range. The range is just the largest number in the set minus the smallest number in the set. In our set, 16 is our largest number and 1 is our smallest. Just do 16 - 1 = 15 and we'll see that 15 is the range of the set. Hope this helps!

Answer:

a. 5sqrt5 (sqrt 5 * sqrt 5 * sqrt 5 = sqrt125 = 5sqrt5)

b. 10sqrt10 (sqrt10 * sqrt10 * sqrt10 = 1000sqrt = 10sqrt10)

c. xsqrtx

Answer:

The points are (1, -11) and (17, -11).

Step-by-step explanation:

The distance between points (x1, y1) and (x2, y2) is

[tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

We have values for x1, y1, and y2. We leave x for x2, and we solve for x.

[tex] 17 = \sqrt{(x - 9)^2 + (-11 - 4)^2} [/tex]

Square both sides.

[tex] 289 = (x - 9)^2 + (-11 - 4)^2 [/tex]

[tex] 289 = x^2 - 18x + 81 + 225 [/tex]

[tex] x^2 - 18x + 17 = 0 [/tex]

[tex] (x - 1)(x - 17) = 0 [/tex}

[tex] x - 1 = 0 [/tex]   or   [tex] x - 17 = 0 [/tex]

x = 1 or x = 17

The points are (1, -11) and (17, -11).

Using distance between two points, it is found that the values are:  x = 17, x = 1.

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

Distance between two points:

Suppose that we have two points, [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]. The distance between them is given by:

[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

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

[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]\sqrt{(x - 9)^2 + (-11 - 4)^2} = 17[/tex]

[tex](\sqrt{(x - 9)^2 + (-11 - 4)^2})^2 = 17^2[/tex]

[tex](x - 9)^2 + (-15)^2 = 289[/tex]

[tex]x^2 - 18x + 81 + 225 = 289[/tex]

[tex]x^2 - 18x + 17 = 0[/tex]

Quadratic equation with [tex]a = 1, b = -18, c = 17[/tex].

Applying Bhaskara:

[tex]\Delta = b^2 - 4ac = (-18)^2 - 4(1)(17) = 256[/tex]

[tex]x_1 = \frac{-b + \sqrt{\Delta}}{2a} = \frac{-(-18) + \sqrt{256}}{2} = 17[/tex]

[tex]x_2 = \frac{-b - \sqrt{\Delta}}{2a} = \frac{-(-18) - \sqrt{256}}{2} = 1[/tex]

The values are: x = 17, x = 1.

A similar problem is given at https://brainly.com/question/22532602

Answer:

Breadth = 3 cm

Step-by-step explanation:

Given:

Area of rectangle = 15 cm²

Breadth = a

Length = 5 cm

Find:

Breadth

Computation:

Area of rectangle = l x b

15 = 5 x a

Breadth = 3 cm

Answer:

100π

Step-by-step explanation:

The formula for area of a circle is:

π[tex]r^{2}[/tex]

The radius is 10 feet.

[tex]10^{2}[/tex] is 100

This makes the expression representing the area of the circle:

100π

Answer:

The slope is 3/2 or 1.5

Step-by-step explanation:

The slope is Rise/Run.

The difference in y-values, –1 -(-4) =3 is the rise.

the difference in x-values, 3 –1 = 2 is the run.

I would say it’s A

____________________________________________________

Answer:

x is greater than or equal to -8

Step-by-step explanation:

35/-5 is 7 and since the sign is greater than that means that -5x will be greater than 35

Answer:

Step-by-step explanation:

Answer:

In t years after 2019 there are going to be 39,523,462*(1.172)^t people.

Step-by-step explanation:

For a) We have a starting amount of 39,523,462 people in 2019, if each year it  grows at a rate if 1.72% then 1 year after 2019 would have 39,523,462*1.172 people. In 2 years we would have 39,523,462*1.172*1.172 or 39,523,462*1.172^2 people etc. We could conclude that after t years there would be 39,523,462*1.172^t people. In part b) just calculate this when t=11 and round this to the nearest whole number, I think you can do it yourself.

Answer:102

Step-by-step explanation:

Answer:

508.4

Step-by-step explanation:

This is on delta math

Answer:

508.4

Step-by-step explanation:

delta math

I agree with Tommy because the sum of the smallest obtuse angles (91+91⁰) is 182⁰ which is a reflex angle, not obtuse. The other obtuse angles will be bigger and so will not be obtuse either.

Answer:

58

Step-by-step explanation:

45=((3x+11)+(10x-12))÷2

90=13x-1

13x=91

x=7

ML=10(7)-12

    =58

Using midline interval, the value of ML is 58.

The distance from the "midline of the interval to either end line is called midline interval".

According to the question,

The line JK is 3x+11, the line ML is 10x - 12. In order to find the value of ML.

The formula to calculate value of ML is midline value =  [tex]\frac{(x1 + x2)}{2}[/tex].

Let x₁ = 3x + 11 and x₂ = 10x - 12

45 = [tex]\frac{(3x + 11) + (10x - 12 )}{2}[/tex]

90 = 3x + 11 + 10x -12

     = 13x -1

13x = 91

   x = 7

Substitute x = 7, in equation x₂ we get 10(7) - 12 = 70 - 12 = 58.

Hence, using midline interval the value of ML is 58.

Learn more about midline interval here

https://brainly.com/question/12992302

#SPJ2

Answer:

c

Step-by-step explanation:

Answer:

Side QR is congruent to Side XY.

Side RS is congruent to Side YZ.

Side SQ is congruent to Side ZX.

Angle Q is congruent to Angle X.

Angle R is congruent to Angle Y.

Angle S is congruent to Angle Z.

Step-by-step explanation:

Side QR is congruent to Side XY because triangle QRS is congruent to triangle XYZ and each point of a triangle is in corresponding order with a point of the other triangle. For example, Q matches up with X since they both are listed first in their respective sequence.

Answer:

12.56637061 ?????

Step-by-step explanation:

Answer:

[tex](6 * n + 3)^{3}[/tex] - 12

Step-by-step explanation:

Twelve less than the cube of the sum of six times a number and three.

1. Change the words into numbers and math symbols.

Twelve = 12

Less than = subtract -

sum of six times a number and three = (6 * n + 3)

cube = exponent 3

2. Write the problem.

[tex](6 * n + 3)^{3}[/tex] - 12

Answer:

1/4

Step-by-step explanation:

Casserole received by Jackie and Alicie = 1/2 x 3/4 = 3/8 of the whole

Portion eaten by Jackie = 2/3 x 3/8 = 1/4 of the whole

The answer is 57917084940

Step-by-step explanation:

1) Simplify 9 + 8/7 + 6 + 89 + 65698 - 7875 + 77 - 88 to 405420/7.

[tex] \frac{405420}{7} \times 999999[/tex]

2) Use this rule: a/b × c = ac/b.

[tex] \frac{405420 \times 999999}{7} [/tex]

3) Simplify 405420 × 999999 to 405419594580.

[tex] \frac{405419594580}{7} [/tex]

4) Simplify.

[tex]57917084940[/tex]

Therefor, the answer is 57917084940.

Answer:

B) (4/9 x 20)-3

Answer:

x

Step-by-step explanation:

In this equation (5x/5), x will end up being by itself because 5/5 = 1. The 5's cancel out and it leaves x by itself.

5x/ 5 =0

x=5/5

X=1

Hence the answer is X=1...