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pogonyaev
3 years ago
10

Y'all I'm in 7th grade and I'm 12 I need help on this exam the question is: A jar contains 5 red marbles, 3 green marbles, and 4

blue marbles A marbles is selected without looking whats the probability that the selected marble is red t​
Mathematics
2 answers:
klasskru [66]3 years ago
8 0

Answer:

Im in 7th grade and im in 12 too :) I turn 13 in June 21st

Step-by-step explanation:

The answer is 1/12. 5+3+4=12 So 1/12 propabilty.

P.S. My favorite color is red

If this was helpful, please mark it as brainliest! :D

My name is Ann [436]3 years ago
6 0

Answer:

the answer will be close to 50% so maybe like 48% or 49%

Step-by-step explanation:

The reasoning behind this is that the are 11 marbles total and half of 11 is 5 and a half. There are 5 red marbles which means that the chances are close 50% but because 5 isn't exactly half of 11 this means that your answer will need to be close to 50% but not exactly 50% which is why i gave the choices 49% or 48%.

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The graph shows the cost of ice cream. If a teacher wants to buy 20 cones, how much will it cost ?
Volgvan

Answer:

you cannot see the graph. So I cannot answer this question

Step-by-step explanation:

if you add the graph maybe I can help :D

6 0
3 years ago
Solve the following system: <br> 3x + 2y = 7 <br> -4.5x - 3y = -10.5
valentina_108 [34]

Answer:

<u>infinitely many solutions</u>

Step-by-step explanation:

The system of equations :

  1. 3x + 2y = 7
  2. -4.5x - 3y = -10.5

Multiplying Equation 1 times 3 and Equation 2 times 2 :

  • 9x + 6y = 21
  • -9x - 6y = -21

Putting the equations in standard form after simplifying :

  1. 6y = -9x + 21 ⇒ <u>y = -1.5x + 3.5</u>
  2. -6y = 9x - 21 ⇒ <u>y = -1.5x + 3.5</u>

<u />

As both equations are the same, the system will have <u>infinitely many solutions</u>.

4 0
2 years ago
What is 1986÷7 please help me
sertanlavr [38]
Step 1. Set up long division 

  _______
7| 1 9 8 6

Step 2. <span>Calculate 19 ÷ 7, which is 2 with a remainder of 5.

       2
</span>  _______
7| 1 9 8 6
    1 4
_________
       5
  Step 3. Bring down 8, so that 58 is large enough to be divided by 7.

       2
  _______
7| 1 9 8 6
    1 4
_________
       5 8

Step 4. <span>Calculate 58 ÷ 7, which is 8 with a remainder of 2.

</span>       2 8
  _______
7| 1 9 8 6
    1 4
_________
       5 8
       5 6
_________
          2

Step 5. <span>Bring down 6, so that 26 is large enough to be divided by 7.

</span>      2 8
  _______
7| 1 9 8 6
    1 4
_________
       5 8
       5 6
_______
          2 6

Step 6. Calculate 26 ÷ 7, which is 3 with a remainder of 5.
   
       2 8 3
  _______
7| 1 9 8 6
    1 4
_________
       5 8
       5 6
_______
          2 6
          2 1
       ______
             5

Step 7. <span>Therefore, 1986 ÷ 7 = 283 with a remainder of 5.

823 With a remainder of 5

Done!

</span><span>Decimal Form If Needed: 283.714286</span>
6 0
3 years ago
Question 1<br> If f(x) = (x-1), what is f(-4.2)?
lana66690 [7]

Answer:

-5.2

Step-by-step explanation:

4 0
3 years ago
Which of the following is the inverse of N(r) if N(r)=8r+17
BaLLatris [955]
N=8r+17 \\ 8r=N-17 \\ r= \frac{N-17}{8}  \\  Inverse \ is \ \frac{r-17}{8}
8 0
3 years ago
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