Add or Subtract to simplify

Answer:

1/4

Step-by-step explanation:

The probability that a student has a brother given that they do not have a sister 9/7.

Suppose that there are finite elementary events in the sample space of the considered experiment, and all are equally likely.

Then, suppose we want to find the probability of an event E.

Then, its probability is given;

[tex]\rm P(E)=\dfrac{Number \ of \ favourable \ events}{Number \ of \ total \ events}\\\\[/tex]

In a class of 22 students, 13 have a brother and 15 have a sister.

There are 3 students who do not have any siblings.

3 students don't have a sibling.

The probability that a student has a brother given that they do not have a sister is;

[tex]\rm P(E)=\dfrac{Number \ of \ favourable \ events}{Number \ of \ total \ events}\\\\ \rm P(E)=\dfrac{13+15-22+3}{22-15}\\\\\rm P(E)=\dfrac{31-22}{7}\\\\ P(E)=\dfrac{9}{7}[/tex]

So, the probability that a student has a brother given that they do not have a sister 9/7.

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Answer:

8+21x one

6+18x one

and the 4x-6 one have on solutions

Answer:

1.3 5/8 ,4.3.5 ,2.3 2/5, 5.3 1/3

Step-by-step explanation:

Answer:

6,000

Step-by-step explanation:

It's correct trust me

Answer:

-60

Step-by-step explanation:

3(-5)+4(-9)-9

-15+-36-9

= -60

Just fill in and solve. Hope this helps ;)

Answer:

-60

Step-by-step explanation:

3(-5)+4(-9)-9= -60

Answer:

The answer is 30

Please give me Brainliest it would mean a lot

Answer:

9x+2

Step-by-step explanation:

It's a simple problem, to find the perimeter, add a+b+c. In this case, it's with binomials, but it follows the same idea.

(2x+2)+(3x+1)+(4x-1)

2x+2+3x+1+4x-1

Combine like terms.

2x+3x+4x=9x

2+1-1=2

Left with 9x+2 as your perimeter binomial.

Answer:

x ≤ 3.210

Bib can buy no more Than 3 books

Step-by-step explanation:

Given that:

Cost per book = 16.50

Total shipping = 25.03

Total budgeted amount = 78

The number of books, x that can be ordered can be represented by the inequality :

16.50x + 25.03 ≤ 78

16.50x ≤ 78 - 25.03

16.50x ≤ 52.97

x ≤ 52.97 / 16.50

x ≤ 3.210

Bib can buy no more Than 3 books

Answer:

k = 10.39

Step-by-step explanation:

tangent 30 = opposite side / adjacent side, opposite side = 9, adjacent side = k + 3sqrt3.

tan 30 = 9/(k + 3sqrt3)

0.5774 = 9/(k + 3sqrt3)

k + 3sqrt3 = 15.5885

k =  15.5885 - 3sqrt3

k = 10.392

Answer:

8

Step-by-step explanation:

8/7  x 7 = 56/7 = 8

Answer:

8 days

Step-by-step explanation:

All you have to do is 8/7 multiplied by 7. Then you'll get your answer of 8 days.

Answer:Ok I This question can be solved using a system of equation, which requires translating the above word problem into something that can be algebraically

Let O=oranges and  Let G=Grapefruit

5O +8G=235

3O + 2G=85

To solve, you must isolate one of the variables and then work from there. To do that multiply both sides of the bottom or second equation by four and then subtract the bottom equation from the top.

Which would look like this

5O +8G=235

12O + 8G= 340

Then subtract the bottom from the top to get this

-7O=-105

Solving for O we divide both sides by -7, and end up with O=15

Plugging that value back into one of our original equations to solve for G we get this

3(15) + 2G= 85

45 +2G=85

2G=40

G=20

So 1 case of each altogether would equal 15+20, or $35.

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Answer:

I believe she can make one bow

Step-by-step explanation:

Iso if she has 5 feet of ribbon and only takes four feet of it then that leaves one foot left but if she has a perfect four foot then she can make a ribbon without extra

Answer:

The answer is 6.5 hours.

Step-by-step explanation:

If you multiply the hours need to work during that week days(6) and the hours worked during the weekend(3.5) you get 33.5 hours worked over all. then, you subtract 40(the hours wanted) and 33.5(the hours worked normally) and you get 6.5.

Answer:

<E = 36 degrees (Answer B)

Step-by-step explanation:

Recall that the addition of all internal angles in a quadrilateral must equal 360 degrees. Then we can write the equation that states this as:

<E + <F + <G + <H = 360

Notice as well that we are dealing with an isosceles trapezoid, so there is a symmetry along the line that passes through the midpoints of sides FG and EH (the two bases). That means that the measures of angles <F = <G  and <E = <H .

The previous equation then can be written as:

<H + <G + <G + <H = 360

Also, since we are told that <G = 4 <H, we can use this info in the equation as shown below:

<H + 4 <H + 4 <H + <H = 360

10 <H = 360

divide both sides by 10 to isolate <H

<H = 360 / 10

<H = 36

Since as we mentioned, <E equals <H, we can state that

the measure of <E = 36 degrees (Answer B)

Answer:

any big number

Step-by-step explanation:

Answer:

x> 11

Step-by-step explanation:

here's your solution

=> 4x + 5 > 49

=> 4x > 49 - 5

=> 4x > 44

=> X > 44/4

=> X > 11

hope it helps

Answer:

angle 5 and 8 are not vertical angles because they dont cross with another live diaglaly

Step-by-step explanation:

Answer:

Corresponding Angles: the angles which occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are equal.

Alternate Interior: The term alternate interior angles is often used when two lines are cut by a third line, a transversal .

Vertical Angle: each of the pairs of opposite angles made by two intersecting lines.

Step-by-step explanation:

Answer:

Questions 1 and 3 already answered

Angles 1 and 3 are corresponding angles and therefore have same value:

Answer:

yeah, the selected is correct

Step-by-step explanation:

distance is...

2 and 2 square root

Answer:

c- people might not realize there words/actions are hurtful

255 minutes

we know that

1 hour = 60 minutes

then according to unitary method

4*1/4 hours = 17/4*60

= 255 minutes

hope it helps

Answer:

[tex]25x^{3}-15x^{2} -38x-8[/tex]

Step-by-step explanation:

Multiply the equations together

(5x+4)(5x^2-7x-2)

25x^3-35x^2-10x+20x^2-28x-8

Add like terms

25x^3-15x^2-38x-8

Answer:

8/5

Step-by-step explanation:

The value of the expression (4/15) x 6 will be 8/5.

Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to answer the problem correctly and correctly.

The numbers are given below.

4/15 and 6

Then the multiplication between the numbers 4/15 and 6 will be given by putting a cross sign between them. Then we have

⇒ (4/15) x 6

⇒ 8/5

The value of the expression (4/15) x 6 will be 8/5.

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Answer:

1/5

Step-by-step explanation: You add 4+10+6 to get 20. So the probability that the spinner lands on red would be 4/20. If you need it simplified  you take 4 and divide it by 4 to get 1, then you would divide 20 by 4 to get 5. that would leave you with 1/5.

Answer:

If we are saying everyhing above sea level is taller then plants under sea level. Then here is the order

Step-by-step explanation:

-8, -6, -3, 2, 6

And just in case it's above sea level the shortest then 6, 2, -3, -6, -8

Answer:

40%

Step-by-step explanation:

you saved $28.00