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pogonyaev
2 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]2 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]2 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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Another question about angles
zvonat [6]

Answer:

ㄥBEC=70;ㄥABE=160

Step-by-step explanation:

(x-5)+(3x-5)+90=180

x-5+3x-5+90=180

4x+80=180

4x=100

x=25

ㄥBEC=3*25-5=70

ㄥABE=180-(25-5)=160

3 0
3 years ago
George bought a rose bush at retail for $24. The wholesale price was $15. What was the markup?
Sliva [168]

Answer:

60%

Step-by-step explanation:

multiply 15 and 60%

Have a nice day!

6 0
2 years ago
The electronics company makes two types of switches. Type a takes 4 minutes to make and requires $3 worth of materials.Type b ta
Shalnov [3]



Let

x ------> number of switch type A

y -----> number of switch type B

so

Remember that

1 hour=60 min

32 hours=32*60=1,920 minutes

4x+5y=1,920 -------> equation 1

3x+5y=1,740 ------> equation 2

Solve the system of equations

Solve by graphing

using a graphing tool

see the attached figure

Solution is

x=180

y=240

therefore

<h2>the number of switch type A was 180</h2><h2>the number of switch type B was 240</h2>

3 0
1 year ago
(02.03)Name the congruent triangles and justify the reason for congruence.
Gala2k [10]

As shown:

Angle C = Angle f = 127

The length of fe = the length of CA = 2 units

Angle E = Angle A = 40

So, triangle ABC = triangle EDF by ASA

The answer is option 2

7 0
1 year ago
Explain how measurements taken by standard rulers and scales are limited.
Neko [114]

Answer:

they are limited because rulers only count up to 12 inches and scales can only weigh up to a certain weight depending on the scale being used.

6 0
3 years ago
Read 2 more answers
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