please help me i dont understand this

Answer:

11

Step-by-step explanation:

x+y=8     y=3

x+3=8

-3     -3

x=11

Answer:

substitute y in the equation

x+3=8

then we solve for x

transpose 3 to the right 8-3=5so therefore x=5

Answer:

is this supposed to be a question?

Step-by-step explanation:

Yes. Absolutely. Correct. Outstanding.

Answer:

50

Step-by-step explanation:

If x=3 then x^3 would be 3 with the exponent of 3. It would look like 3x3x3=27

6x would be 6 times 3 which is 18.

Then you have just an extra 5.

Then add them all together. 27+18+5=50.

Therefore, your answer is 50.

Answer:

1. 193.2 in³

4. 628.32 ft³

Step-by-step explanation:

For the rectangular prism, just find the area of each individual side and add. For the cylinder, just do πr²×h, with r being the radius and h being the height.

Answer:

Given :  the sample space of​ two-digit numbers that can be created using the digits 9,7,1, and 8.

To Find : probability of choosing a number from the sample space that contains both 7 and 8.

Solution:

TREE DIAGRAM

       9                    7                      1                    8

       ↓                     ↓                      ↓                  ↓

-------------------      ----------------    -----------------    ---------------

↓      ↓     ↓    ↓    ↓       ↓  ↓  ↓   ↓    ↓     ↓   ↓    ↓  ↓   ↓   ↓

9     7     1     8     9    7    1     8    9   7   1    8     9   7   1    8

Total Sample space  =  16

Contains both 7 and 8

is ( 7 , 8)  or ( 8 , 7)

Hence probability of choosing a number from the sample space that contains both 7 and 8.  =  2/16

= 1/8

= 12.5 %

Step-by-step explanation: I spent lots of time typing out and working out the answer to your question so please mark Brainliest because no matter what you are always the Brainliest of them all! Have a wonderful day!

18cm square

I think domt know

Answer:

the answer is 141

may it help you

Answer:

Answer: 0.75(3/4) part of the room

Step-by-step explanation:

Answer:

0.75(3/4) part of the room

Step-by-step explanation:

if he takes 2/3 hours to paint 0.5 room

then he will take 1 hour to paint x

cross multiply we have

x= 0.5/2/3

x=0.5*3/2

x= 1.5/2

x=0.75 part of the room

75/100= 15/20=3/4 part

Answer:

D g(x) = (9x)²

Step-by-step explanation:

Answer:

Seven times two times 'j', plus three, plus two times 'j'"

Step-by-step explanation:

7(2j + 3 + 2j)

7 ([2*j ]+ 3 + [2*j])

Good luck!!

Answer:

blue:2%

pink:40%

orange:25%

white:33

Step-by-step explanation:

Answer:

If we let x be the number of ticket sold and y be the amount in dollars donated then, the equation would be,

                                     x = 2y

We can check our answer by substituting the given,

                                     10 = 2(5)

                                      10 = 10

The equation can also be written as,

                                    y = (1/2)x

Student B is correct.  

Answer:

Sample Response/Explanation: The point that represents what the local business will donate is (10, 5). After testing the point in both equations, you can see that student B wrote the correct equation; 5 = 12(10).

Step-by-step explanation:

Answer:

it is A i think i am a nub tho

Step-by-step explanation:

Answer:

D I think

Step-by-step explanation:

Answer:

Step-by-step explanation:

1. x+2y=6 or x=6-2y

3x-2y=2

3(6-2y)-2y=2

18-6y-2y=2

18-8y=2

-8y=-18+2

-8y=-16

y=-16/-8

y=2 ans.

x+2*2=6

x+4=6

x=6-4=2 ans.

Proof:

3*2-2*2=2

6-4=2

2=2

I leave the rest for you to practice with.

3. 4x+y=7

2x+5y=-1

5. 3x+2y=-2

6x-y=6

Solve the system using the elimination method. Show all your steps.

7. -3x+3y=3

3x+y=9 add.

---------------------------------

4y=12

y=12/4

y=3 ans.

3x+3=9

3x=9-3

3x=6

x=6/3

x=2 ans.

Proof:

-3*2+3*3=3

-6+9=3

3=3

I'll leave the rest for practice.

9. -5x+12y=20

x-2y=-6

11. 3x+2y=1

4x+ 6y= 7

Answer:

the answer is c

Step-by-step explanation:

Answer:

x>4

Step-by-step explanation:

x+3>7

bring the 3 to the other side by changing it into a minus making it

x>7-3

=x>4

Answer:

12.5 cm I would believe

Step-by-step explanation:

30 divided by 12 is 2.5, 5 times 2.5 is 12.5

Answer:

Step-by-step explanation:

6) Convert mixed fraction to improper fraction and then plugin the values in the formula.

[tex]l= 3\frac{1}{3} yard=\frac{10}{3}\\\\w = 1\frac{5}{9} yard=\frac{14}{9}\\\\h =2\frac{1}{4} yard=\frac{9}{4}\\\\Volume of wood shed = l * w *h\\\\= \frac{10}{3}*\frac{14}{9}*\frac{9}{4}\\\\= \frac{5}{3}*\frac{7}{1}*\frac{1}{1}\\\\=\frac{5*7}{3}\\\\=\frac{35}{3}\\\\=11\frac{2}{3} cubic yard[/tex]

b) 10 cubic yard is less than 11 2/3 cubic yard. So, it will fit in the wood shed.

7) Right side rectangular prism:

l = 16 in

w = 5 in

h =  20 - 14 = 6 in

Volume 1 = 16 * 5 * 6 = 480 cubic inches

Left side rectangular prism:

l = 9 in

w = 5 in

h =14 in

Volume 2 = 9 * 5 * 14 = 630 cubic in

Volume of composite solid = 480 + 630 = 1110 cubic inches

Answer:

The answer is 1750

Step-by-step explanation:

Because 20% of 1750 is 350

Answer:

1750 is the total number of people at the stadium

Answer:

points

Step-by-step explanation:srry

Answer:

3, 7, 8, 5, 12, 14, 21, 13, 18

Step-by-step explanation:

Step One: Identify two points on the line.

Step Two: Select one to be (x1, y1) and the other to be (x2, y2).

Step Three: Use the slope equation to calculate slope.

The equation used to calculate the slope from two points is: m= y2 - y1 / x2 - x1

Example

Let's say that points (15, 8) and (10, 7) are on a straight line. What is the slope of this line?

Step One: Identify two points on the line.

In this example we are given two points, (15, 8) and (10, 7), on a straight line.

Step Two: Select one to be (x1, y1) and the other to be (x2, y2).

It doesn't matter which we choose, so let's take (15, 8) to be (x2, y2). Let's take the point (10, 7) to be the point (x1, y1).

Step Three: Use the equation to calculate slope.

Once we've completed step 2, we are ready to calculate the slope using the equation for a slope: