MATHEMATICS MIDDLE SCHOOL

HELP ME PLZZZZZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!​
HELP ME PLZZZZZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!​ - 1

Answers

Answer 1
Answer:

Answer:

The answer is 90 winners.

Step-by-step explanation:

Well, we are given three days. The first day has a rate of 13% winning. The second day has a rate of 13% as well. And the third day has a rate of 11%. You can find this simply by dividing the amount of winners by amount of participants. Now, we must find the mean, or average, of these statistics. We will get 12% as the average rate of winners. How did we get this? By simply adding all three (13+13+11) then dividing by three (37/3), which gives us 12% if we round to a whole number. Now, we can take this number and get 12% of 750. How do we do this? Well, 12% is equal to 0.12. So we will multiply 0.12 by 750. This will give us 90. And there you have your answer.

Alternatively, you could add up the total amount of contestants from the three days. You should end up with 1000. Then add up the total amount of winners from the three days. You should get 120. Divide both of these by 4. The winners will now be 40, and the total contestants will be 250. Now multiply both by 3. The amount of contestants will be 750, and the amount of winners will be 90. This way is a bit easier, but does not always work. Do what is best for you!

Hope this helped!

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Find the circumference of the circle. Use 3.14 for piπ. WILL MARK BRAINLIEST!!! ⭐️

Answers

Ok so the circumference equation is

C=2piR
So insert

2(3.15)(11)

This makes your answer 69.11504

Answer:

c=2πr

c= 2*π*11

c=6.28*11

c=69.08

(Essay Question 7 Points)Suppose you roll a six-sided die two times hoping to get two numbers whose sum is even. What is the sample space? How many favorable outcomes are there?

Answers


Well I don't know.
Let's think about it:

-- There are 6 possibilities for each role.
    So 36 possibilities for 2 rolls.
    Doesn't take us anywhere.

New direction:
-- If the first roll is odd, then you need another odd on the second one.
-- If the first roll is even, then you need another even on the second one.
This may be the key, right here !

-- The die has 3 odds and 3 evens.

-- Probability of an odd followed by another odd = (1/2) x (1/2) = 1/4
-- Probability of an even followed by another even = (1/2) x (1/2) = 1/4

I'm sure this is it.  I'm a little shaky on how to combine those 2 probs.

Ah hah ! 
Try this:

Probability of either 1 sequence or the other one is (1/4) + (1/4) = 1/2 .

That means ... Regardless of what the first roll is, the probability of
the second roll matching it in oddness or evenness is 1/2 .

So the probability of 2 rolls that sum to an even number is 1/2 = 50% .

Is this reasonable, or sleazy ?

Solve by substitution to find x and y

4=-x-y
2x-y=10

Answers

Hello Jay

4=-x-y

2x-y=10

We need to solve 4=-x-y for x

Now add x to both sides

4+x=-x-y+x

x+4==-y

Add -4 to both sides

x+4-4=-y-4

x=-y-4

Now we need to substitute -y-4 for x in 2x-y=10

2x-y=10

2(-y-4)-y=10

To find the result of this factor we need to simplify

-3y-8=10

Add 8 to both sides so we can start finding the y value

-3y-8+8=10+8

-3y=18

Divide both sides by -3 so we can find the y value

-3y/-3=18/-3

y=-6

Now let's find the x value by substitute -6 for y in x=-y-4

x=-y-4

x=-(-6)-4

x=2

Answer: x=2 and y=-6


I hope that's help:0

Point C belongs to segment AB and segment AB= 35 cm. The distance from C to A is 6 cm longer than the distance from C to B. Find AC and CB.

Answers

Answer: AC = 20.5 cm   CB = 14.5 cm

Step-by-step explanation:

Since we know that segment AC is 6 cm longer than CB, we can can substitute AC as CB + 6.

CB = CB

AC = CB + 6

We know that AB is 35 cm, and AB is made up of AC and CB, so we now have the equation CB + CB + 6 = 35

Now, we solve.

CB + CB + 6 = 35

2CB = 29

CB = 29/2

CB = 14.5 cm

AC = CB + 6 = 14.5 + 6 = 20.5 cm

Answer:

AC = 20.5 cm

CB = 14.5 cm

Step-by-step explanation:

Let x be the distance from point C to point B:

\overline{\sf CB} = x \;\sf cm

Given that the distance from A to C is 6 cm longer than the distance from C to B, then:

\overline{\sf AC} = (x + 6) \;\sf cm

Now, we know that segment AB is 35 cm long, and it can be expressed as the sum of AC and CB, so:

\overline{\sf AC}+\overline{\sf CB}=\overline{\sf AB}

x+6+x=35

Solve for x:

\begin{aligned}2x+6&=35\n\n2x+6-6&=35-6\n\n2x&=29\n\n(2x)/(2)&=(29)/(2)\n\nx&=14.5\; \sf cm\end{aligned}

So, the lengths of the two line segments are:

\overline{\sf AC} = (14.5 + 6)=20.5 \;\sf cm

\overline{\sf CB} = 14.5 \;\sf cm

Can any one help me with this?

Answers

Answer: to #3 is no it is not a function

Step-by-step explanation:
10. x= -1

3x + 7 =11x +15
-3x -3x

7=8x + 15
-15. -15

-8=8x
—. —
8. 8

X=-1

The students council is asking people to donate money for the new park outside the school. Everyone who makes the suggested donations amount will be given a bracelet. If everyone donates the suggested amount, b bracelets are given away, what algebraic expression represents the total amount collected in donations

Answers

Let each amount be  y.

Since b bracelets were given away, it number of persons who made the amount = b.

Total = b*y

Total amount = by.
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