Please help me with this
I have a headache so I don't know what to do

Answer:

3a - 6b + 2ab

Step-by-step explanation:

We can group the a's and b's like this:

4a - 7b + 2ab - a + b

4a - a - 7b + b + 2ab

3a - 6b + 2ab

Answer:

- ab and 15ab

Step-by-step explanation:

Answer: The probability of choosing a green marble is [tex]\frac{1}{3}[/tex].

Step-by-step explanation:

Answer:

The probability of choosing a green marble is 1/3

Step-by-step explanation:

Answer:

the answer is $33.9

Answer:3.39

Step-by-step explanation: what you do is you divide 10.17 and 3 and it will give you 3.39

Answer

R=6

Step-by-step explanation:

Hope this helps!

Answer:

Step-by-step explanation:

Answer is :

r=6

Answer:

6. Yes, there is a way to tell. Perpendicular when the product of the slopes equal -1. Parallel = same slope. Same line = same equation(maybe written in different ways like point-slope or standard form).

7. The equations in system 4 are parallel because they have the same slope.

1. purple box = y=-3x+5

  green box = y= 4x-3

  blue box = y= -2/3 + 2

Step-by-step explanation:

Answer: 6+x+24y  maybe

Answer:

the ans is 5

Step-by-step explanation:

2j+5=3+2j+2 cancel equal terms which is 2j

so what we have left is

5=3+2

5=5

so 5 is the ans

Answer: infinity many solutions

Step-by-step explanation:

2j + 5 = 3 + 2j + 2

Combine numbers in the right side

2j + 5 = 2j + 5

Minus the smallest j from both side in this case u get rid of both j’s which mean -2j

5 = 5

Divide by 1 or -5

Which mean we get 5 = 5 or 0 = 0

Answer: I believe this is correct, i got 80 tickets

Step-by-step explanation:

I divided 2212.50 by the adult tickets, 7.50, and got 295. if the adults sold 295 tickets, then the students would have sold 80, because thats all that were left. I hope I helped

The number of student tickets the class sold is 200.

Let

x = number of student ticket sold

y = number of adult ticket sold

The junior class at Summerfield High School sold a total of 375 tickets for their spring festival. Therefore,

The junior class collected $2,212.50 in ticket sales. Therefore,

Combine the equation to get the number of student ticket sales.

x + y = 375

4.50x + 7.50y = 2212.50

Multiply equation(i) by 4.50x

4.50x + 4.50y = 1687.5

4.50x + 7.50y = 2212.50

3y = 525

y = 525 / 3

y = 175

x + y = 375

x = 375 - 175

x = 200

learn more on system of equation : https://brainly.com/question/20951070?referrer=searchResults

Answer:

Total fish to Angelfish: 14fish to 4 fish

Catfish to Tiger Barbs: 2/5

Tiger Barbs to total fish: 5 to 14

Angelfish to Goldfish: 4:3

How u insert a image=When u ask a question there should be a paperclip looking thing click that and you can insert a image

B.9 gallons in the gas tank and 280 miles.

From the given figure we see that the line of best fit passes through the point (13,400) and (17,520)

We know that the equation of a line passing through two point (a,b) and (c,d) is calculated by using the formula

y - b = d-b/c-a x (x-a)

Here we have:

(a,b)=(13,400) and (c,d)=(17,520)

Hence, the equation of line of best fit is: y - 400 = 520 - 400/17-3 x (x - 13)

y-400=120/4 x (x-13)

y=400=30x(x-13)

y-400=30x-390

y=30x-390+400

If u want to check your answers

0 gallons in the gas tank and 20 miles

when x=0 we have:

y=10≠20

Hence, option: A is incorrect.

B)

9 gallons in the gas tank and 280 miles .

when x=9 we have:

y=30×9+10

y=280

Hence, option: B is correct.

C)

11 gallons in the gas tank and 360 miles

when x=11; we have:

y=30×11+10

y=340≠360

Hence, option: C is incorrect.

D)

19 gallons in the gas tank and 520 miles

when x=19; we have:

y=30×19+10

y=580≠520

Hence, option: D is incorrect.

Answer:

x is 35

Step-by-step explanation:

First do 180 -40 and get 140. Then add 3x plus x to get 4x because they are the same value/ Do 140/ 4x and get 35. X equals 35.

Answer:

35, 135

Step-by-step explanation:

You first add the like terms. 3x + x = 4x. Next you form an inequality.

40 - 4x = 180.

x = 35

Since x equals 35 you do 3 * 35. 3(35), which is 105.

35 + 40 + 105 = 180!

Answer:

5

Step-by-step explanation:

2x - 3 + 4x= 27

6x - 3= 27

6x= 27 + 3

6x= 30

X= 30/6= 5

Answer: C) Always false

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Explanation:

A linear pair of angles satisfy these two requirements (both must be true)

While it is possible for vertical angles to be supplementary (they both are 90), it is not possible for vertical angles to be adjacent. This is because vertical angles do not share a common side. Vertical angles are opposite one another, so they are as far from adjacent as possible, while still sharing a common vertex point however.

This means that vertical angles are never considered to be a linear pair. Put another way, you can ask yourself "can vertical angles form a straight line?". The answer is "they can never form a straight line". Again the fact they aren't adjacent is the reason why.

Answer:

72%

Step-by-step explanation:

18/25 = 0.72

0.72 x 100 = 72

Answer:

72%

Step-by-step explanation:

Step 1 we make the assumption that 25 is 100% since it is our output value

Step 2 we next represent the value we seek with x

Step 3 from step 1, follows that 100%=25

Step 4 in the same vein, x%=18

Step 5 this gives us a pair of simple equations: 100% = 25(1)

X%= 18(2)

Step 7: taking inverse of both sides yields

X%\100% = 18/25

—> = 72%

Therefore, 18 is 72% of 25

this just answer for points

Answer:

0

Step-by-step explanation:

0 = 0 anything with a zero is zero.

Answer:Plot the integer 28 and its opposite on the number line.

Solution

Step 1:

The opposite of 28 is −28.

Step 2:

These integers on number line are as shown below.

Plotting integers on a number line 6.3

Step-by-step explanation:

Answer:

Because the location and the altitude affect the climate because of teh sun... it would be warmer in areas that are closer to the equator and colder at the poles.

Weather reflects short-term conditions of the atmosphere while climate is the average daily weather for an extended period of time at a certain location

The Earth axis give us season. During summer the northern hemisphere is pointed towards the sun while the southern hemisphere is having winter because it is pointed away from the sun

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

To add fractions, find the LCD and then combine.

5

Answer: henrik has 320 potatoes in al

Step-by-step explanation:. Henrick has 3x as many as derek when you here times you multiply. derek has 49x3 equals 147 but henrik has 173 extra potatoes 147+173 equals 320

Answer: 2250

Step-by-step explanation: all you have to do is multiply 90 x 25 which equals 2250

Answer:

-7 3/4x7(3) and 6 1/4x-4

Step-by-step explanation:

Answer:

60%

Step-by-step explanation: