MATHEMATICS MIDDLE SCHOOL

If the ratio of boys to girls in the classroom is 3 to 5, if there are 25 girls in the class how many boys are there?

Answers

Answer 1
Answer:

Answer:

15 boys

Step-by-step explanation:

3:5 = x:25

25/5 =5

5x3 = 15

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A line has a slop of 2 and passes through the point -12,8

Answers

The function of the line would be best represented by y=mx+b where m = slope and b = y intercept.
To find this we can put it into the slope-intercept form of y-y1=m(x-x1)

Which is:
y-8=2(x+12)
y=2x+24+8
y=2x+32
Hope that helps!
y=mx+b
m=slope
b=y intercept

slope=2
y=2x+b
solve for b by inputing
(-12,8)
(x,y)
x=-12 and y=8 is one solution
input -12 for x and 8 for y

8=2(-12)+b
8=-24+b
add 24 to both sides
32=b

y=2x+32

2x-8 what is the answer

Answers

2x-8if it means2 times -8 then 2 times -8=2 time s8 times -1=16 times -16if it is x is a placeholder then undistribute whereab+ac=a(b+c)so2x-82(x)-2(4)=2(x-4)so the factored form is 2(x-4)there is no equation so we cannot solve for x2x-8 could be equal to 3 or pi for all we know
The answer is x - 4.

You have to isolate the variable so you divide 2 from both sides leaving you with x - 4. Since you can't simplify it anymore, the answer will be x - 4. Hope I helped.

A theater company charges $7.50 per ticket for people of all age groups. If c represents the total number of children who bought tickets and a represents the total number of adults who bought tickets, which expression best represents the total money earned by the company from the sale of tickets?A 7.5c + a
B c + 7.5a
C 15(c + a)
D 7.5(c + a)

Answers

The total money earned by the company from the sale of tickets in expression is 7.5 (c+a).

What is expression?

An expression is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division etc.) Expressions can be thought of as similar to phrases.

According to the question

A theater company charges $7.50 per ticket for people of all age groups.

The total number of children who bought tickets = c

The total cost for children who bought tickets = $7.50c

The total number of adults who bought tickets = a

The total cost for adult who bought tickets = $7.50a

The total money earned by the company from the sale of tickets

= The total cost for children who bought tickets + The total cost for adult who bought tickets  

= 7.50c + 7.50a

= 7.5 (c+a)

Hence, The total money earned by the company from the sale of tickets in expression is 7.5 (c+a).

To know more about expression here:

brainly.com/question/13947055

#SPJ2
d, because the cost of a ticket for both children and adults is 7.50 each

How many decimal places do you think are in the product of 3.2 x 0.77 x 1.6

Answers

the answer is 3.9424 so there are 4 decimal places.

What two numbers multiply together and equal 16 and add together and equal -2?

Answers

There is a solution, but you might not have learned how to do it yet
in middle school.

If you've learned to use the quadratic formula to solve a quadratic equations,
then you can do this.

The first requirement says: ' x ' times ' y ' = 16
The second requirement says: (x + y) = -2

Take the second requirement, and subtract ' x ' from each side:

y = -x - 2

Substitute this into the first requirement:

' x ' times (-x - 2) = 16

Eliminate parentheses:

-x² - 2x = 16

Subtract 16 from each side:

-x² - 2x - 16 = 0

Multiply each side by -1:

x² + 2x + 16 = 0

Solve this with the quadratic formula, and you get two solutions,
which are the two numbers that satisfy both requirements.

The numbers are

-1 + √-15

-1 - √-15

Check:

-- Product: (-1 + √-15) times (-1 - √-15) = 1 + 15 = 16

-- Sum = -1 + √-15 -1 - √-15 = -2

They work. 
yay
None, because both numbers must be negative in order to get a positive answer, or both positive. However, -2 means that there is at least one negative number, or two negative numbers. the only option : -1+(-1)= -2. So there is no real solution.

Joshua saves $325 every 5 months.How long will it take him to save $845? Explain how you determined your answer.

Answers

325/5 = $65 a month .845/65= 13 months
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