I will mark you Brainliest just help me

Answer:

575

Step-by-step explanation:

If a sample of 50 is selected and ten out of that are infected, dividing you would get my answer. To get it, divide the sample amount that were infected by the whole amount. I am unsure if this is correct but fingers crossed this helps. Feel free to talk it through with me.

Answer:

C) 12%

Step-by-step explanation:

there are 25 ppl in this class. there are 3 ppl with 7 or 8 ppl in their family. 3/25=0.12=12%

Answer:

the answer is C

Step-by-step explanation:

you add up all the dots then take 3 and do 3/25 which gives you 0.12

For area, you multiply two sides together so it would be 15. For perimeter, you add up all sides so it would be 16.

Area = 15

Perimeter = 16

Answer:

16 is the perimeter and 15 is the area

Step-by-step explanation:

Answer:

Ok so basically, the formula for Volume of a Trapezoidal Prism. If the prism length is L,trapezoid base width B, trapezoid top width A, and trapezoid height H, then the volume of the prism is given by the four-variable formula: V(L, B, A, H) = LH(A + B)/2. In other words, multiply together the length, height, and average of A and B.

Answer:

The correct answer would be J; [tex]\frac{1}{2} r + 2[/tex];  

Step-by-step explanation:

Using the algebra;

[tex]\frac{1}{2} * r[/tex] = [tex]\frac{1}{2} r[/tex]

[tex]\frac{1}{2} * 4 = 2[/tex]

Altogether this would give "J" as the answer.

Hope this helps!

Answer:

J

Step-by-step explanation:

1/2(r+4) you distributing 1/2 to r and 4

Which basically divides them in half

Answer:

12 to a 100

Step-by-step explanation:

12% is basically 12/100

12% is equal to the ratio 12 to 100.

Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100.

Here, we know that

 percentage = Quantity per unit 100

                12%  = 12 / 100

Thus, 12% is equal to the ratio 12 to 100.

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Answer:

1.  145-(3squared times 4)=109

2. 45 divided by 9 times 12-8= 52

3.  2 squared +3 times 4-12= 4

4.[155-(3 times 9) times 2] -12= 89

5. [(6 times 2) +(5 times 5)  times 3= 111

6. 2 times {15+[24-(1.5 times 2)]}= 72

Step-by-step explanation:

(BOMDAS) brackets, operations, multiplication, division, addition, subtraction

1. (deal with the brackets first)

3 squared=9 then times by 4 =9*4=36

so..

145-36=109

2. (start with division )

45 divided by 9 =5

so

5 times 12-8= 52

3. 2 squared = 4

4 times 3 =12

so

4+12-12 =4

4.  (deal with brackets first)

3 times 9 = 27

27 times 2=  54

155-54= 101

101-12=89

5. (deal with the brackets first)

6 times 2 =12    

5 times 5=25

so 12+25=  37 times 3 = 111

6.  (deal with the brackets first)

1.5 times 2= 3

24-3= 21

15+21=36

2 times 36= 72

hope this helps!!!

Answer:

217 = 217/100 = 2.17

Step-by-step explanation:

Answer:

18 1/12 ft = base length

Step-by-step explanation:

The area of a triangle of base b and height h is A = (1/2)(b)(h).

Since we want the measure of the base we solve this formula for b:

2A = (b)(h)

                                                                                                  2A

and then divide both sides to obtain a formula for b:  b = -----------

                                                                                                     h

Substituting 217 ft^2 for A and 24 ft for h, we get:

b = 2*217 ft^2 / 24 ft = 18.0833....  ft

If the answer must contain a fraction, take the 18 and hold it and convert the remaining 0.08333... to a fraction.  One way of doing this is to use a calculator.  On my old TI calculator, I would type in 0.0833333333..

and then press the MATH key and then select Option 1:  Decimal to fraction.

Doing this yields 1/12.  You can check this result by dividing:  1/12 = 0.08333...

Then the final answer, converted from 18.08333... ft, is

18 1/12 ft = base length

Answer:

The area of fenced surface is 7<2ft

Answer:

#1) <KIH

#2) <HIK

Just make sure the I is in the middle since I is the middle and essentially the marked angle.

Answer:

HIK and KIH

Step-by-step explanation:

Answer:

Hope this helps

Step-by-step explanation:

Answer:

l = 14

Step-by-step explanation:

The perimeter of a rectangle is

P =2(l+w)

The width is x-6

w = x-6

The length is 8 units longer than the width

l = w+8

l = x-6+8

l = x+2

We can substitute this into the equation for Perimeter, which is given as 40

40 = 2(x+2 + x-6)

Combine like terms

40 =2 (2x-4)

Divide by 2

40/2 = 2/2 (2x-4)

20 = 2x-4

Add 4 to each side

20+4 =2x-4+4

24 = 2x

Divide by 2

24/2 =2x/2

12=x

We want to know the length

l = x+2

l =12+2

l = 14

Answer:

The angle is 90 degrees since it is a right angle.

90-50=40 gives us how much the equation 6a-8 is worth

Set it so

6a-8=40

6a=48

a=8

Hope this helps and lmk if it  

Answer:

[tex]a=8[/tex]

Step-by-step explanation:

The total angle is 90° and 90° - 50° is 40° so [tex]6a-8=40[/tex].

After you add 8 to both sides you get [tex]6a=48[/tex].

Divide both sides by 6 and you get [tex]a=8[/tex].

Answer:

144 ft^2

Step-by-step explanation:

Here we have a trapezoid with a triangle inside.

The legs of the trapezoid are 18 ft and 8 ft, and so the average length of the trapezoid is (18 + 8)/2 ft, o 13 ft.  The total area of the trapezoid is thus:

A = (13 ft)(16 ft) = 208 ft^2

Now we must find the area of the white triangle and subtract it from the area of the trapezoid already found.  The area formula for a triangle i

A = (1/2)(base)(height), which in this case is A = (1/2)(8 ft)(16 ft), or

A = 64 ft^2.

Subtracting the area of the triangle from that of the trapezoid yields

Area of figure = 144 ft^2

Answer:

10%

Step-by-step explanation:

[tex]\frac{5}{18}*\frac{9}{25}=0.1[/tex], so the probability is 10%. Hope this helps!

Answer:

3.6 for Sarah and 2.8 for David

Step-by-step explanation:

Answer:

1. x=-13

2. x=2

Step-by-step explanation:

Answer:

A- 75.4 millimeters cubed

Step-by-step explanation:

3mm to the 4th power estimates to A

Answer:

Step-by-step explanation:

xplanatiоn is in a fileAnswer:

Step-by-step explanation:

New bag of food will last until 2 1/2 weeks.

Proportions are defined as the concept where two or more ratios are set to be equal to each other.

Suppose we have two ratio p : q and r : s.

If both these ratios are proportional, then we can write it as p : q = r : s or p/q = r/s

Given that,

Amount of food fed to Great Dane by Deon in 1 week = 62 cups

He has a new bag with 160 cups of dog food.

He needs this food to last up to 2 1/2 or 2.5 weeks.

We have,

Amount of food needed in 1 week = 62 cups

Let Amount of food needed in 2.5 weeks = x cups

Ratio of 1 week to 62 cups and 2.5 weeks to x cups will be equal.

So using proportional concept, we can write this as,

1 / 62 = 2.5 / x

We have to find the value of x.

Doing the cross multiplication,

x = 2.5 × 62 = 155 cups

So the amount of food needed in 2.5 weeks = 155 cups.

But he has a new bag with 160 cups which is more than enough for 2.5 weeks, since only 155 cups is needed for 2.5 weeks.

Hence the new bag of food will last until 2 1/2 weeks.

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Answer:

1. 1 rectangle and 2 squares

2.lx_..._=w  area 12x9 which 108    triangle   1/2xbxh   1/2x12x2 which is 12 area of polygon would be 130

Step-by-step explanation:

Answer: d

Step-by-step explanation: trust me ok

Answer:

5157.08m

Step-by-step explanation:

rectangle

100m * 50m = 5000m

Circle

circumference = 2 pi r

2 * 3.14 * 25 = 157.08

157.08 + 5000 = 5157.08m

Answer: by the looks of this its 2

Answer:

1: 136, 2: 55. 3: 53, 4: 70, 5: 61, 6: 112

Step-by-step explanation:

The value of x for each indicated angle are 136, 55, 53, 70, 61, and 112.

The angles that are in the same position on a given two parallel lines intersected by a transversal line are called the corresponding angles.

Corresponding angles are always equal.

We can also have alternate angles which are always equal.

We can also have alternate interior and exterior angles which are equal.

The angles on the same side make upto 180 degrees

We have,

1)

x and 136 are alternate angles.

So,

x = 136

2)

125 and x make a straight angle.

So,

125 + x = 180

x = 180 - 125

x = 55

3)

53 and x are corresponding angles.

So,

x = 53

4)

x and 110 are exterior angles on the same side.

This means,

x + 110 = 180

x = 180 - 110

x = 70

5)

x and 61 are opposite angles.

This means,

x = 61

6)

x and 112 are alternate exterior angles.

So,

x = 112

Thus,

The value of x is 136, 55, 53, 70, 61, and 112.

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D

"What is a variable?

A variable is used in a Fair Test. A variable is any one of the elements of the test which could be changed. They can change the outcome of an experiment.

In a fair test, only one variable is allowed to be manipulated – all others have to be kept the same,or “controlled”."

Answer:

56.52

Step-by-step explanation:

Volume of a cylinder = π[tex]r^{2}[/tex]h

                                   = 3.14 x [tex]3^{2}[/tex] x 2

                                   = 3.14 x 9 x 2

                                   = 56.52

I know someone already answered this but this is what I thought was right, sorry if it's wrong.                   

Answer:

[tex]114^{o}[/tex]

Step-by-step explanation:

Angles in a triangle add up to 180 so 180 - 34 - 32 = 114

Answer:

I know you said no guessing, but I'm assuming it's the first one, F.

Answer:

The second graph as per my best guess LOL

Step-by-step explanation:

LMK if I'm wrong please