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Andrew [12]
3 years ago
14

John has a bag of red and blue marbles. John chooses 2 marbles without replacing the first.

Mathematics
1 answer:
Arturiano [62]3 years ago
5 0

Answer:

Step-by-step explanation:

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Can someone give me the answers plz:)
Alborosie

Remark

There is no short way to do this problem and no obvious way to get the answer other that to solve each part.  

Solve

A

\dfrac{x + 1.6}{2} =\text{x + 0.1}                    Multiply by 2

x + 1.6 = 2(x + 0.1)                                         Remove the brackets

x + 1.6 = 2x + 0.1*2                                        

x + 1.6 = 2x + 0.2                                          Subtract x from both sides

1.6 = x + 0.2                                                  Subtract 0.2 from both sides  

1.6 - 0.2 = x                        

1.4 = x

Circle A

B

Subtract 2x from both sides.

3x - 2x = 1.4

Circle B

C

Remove the brackets.

4x + 6 = 2x - 6           Add 6 to both sides

4x + 12 = 2x               Subtract 4x from both sides.

12 = -2x                      Divide by - 2

12/-2 = x

x = - 6                         Don't circle C

D

I'm going to be very scant in my solution of this. You can fill in the steps.

3x = 4.2

x = 4.2/3

x = 1.4

Circle D

5 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST - What is the length of the hypotenuse of the base?<br> *Picture linked below*
Citrus2011 [14]

Answer:

4sqrt(2) cm

Step-by-step explanation:

a^2 + b^2 = c^2

4^2 + 4^2 = c^2

32 = c^2

sqrt(32) = c

c = 4sqrt(2)

6 0
2 years ago
Read 2 more answers
Solve by substitution. Please show work<br> Y=-3x-14<br> -2x-y=9
Mama L [17]

Answer:

I dont know math

Step-by-step explanation:

like bro i havent been paying attention to school that I havent learn stuff and I'm in 9th grade

8 0
2 years ago
Read 2 more answers
Ruby wants to start her own business taking photographs. She already has her own camera, but needs to purchase lights, a photo p
never [62]
251.99 + 150.00 + 30.98 = 432.97 <==


7 0
2 years ago
Read 2 more answers
Luca is planning to pay the restaurant bill for his coworkers. The bill was $193.75. A 4% tax was then added by the waiter. If L
horrorfan [7]

Answer:

If Luca wants to leave a 16% tip on the total amount including the tax, he should pay $32.24.

Step-by-step explanation:

First, you have to calculate the 4% of the bill and add that amount to the total of the bill to determine the total amount including the tax:

193.75¨*4%=7.75

193.75+7.75=201.5

Now, you have to calculate 16% of the amount including the tax:

201.5*16%=32.24

According to this, the answer is that if Luca wants to leave a 16% tip on the total amount including the tax, he should pay $32.24.

4 0
3 years ago
Read 2 more answers
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