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Kay [80]
3 years ago
9

A bag contains 4 red, 11 green, and 5 blue balls. The balls are identical in size. A call is drawn at random. What is the probab

ility of the ball being red
Mathematics
1 answer:
Elza [17]3 years ago
5 0

Answer:

/////////////////////////////////////////////

Step-by-step explanation:

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////lalks

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Question Help
Lady bird [3.3K]

Answer:

19 1-point shots and 32 2-point shots

Step-by-step explanation:

Let x be the amount of 1-point shots they made and y be the amount of 2-point shots they made then...

x+y=51

x+2y=83

We can solve this equation using elimination. In this case, we can eliminate x be subtracting the two equations.

-y=-32

Divide both sides by -1

y=32

Plug this back into the equation to solve for x

x+32=51

Subtract 32 from both sides

x=19

They scored 19 1-point shots and 32 2-point shots.

8 0
3 years ago
A car initially traveling at 20 kilometers per hour takes 10 seconds to speed up to 70 km/hour. At what rate is it changing spee
Snezhnost [94]
  • Initial velocity=u=20km/h
  • Final velocity=v=70km/h
  • Time=10s=t

Convert speeds to m/s

\\ \rm\longmapsto u=20\times\dfrac{5}{18}=5.05m/s

\\ \rm\longmapsto v=70\times \dfrac{5}{18}=19.4m/s

\boxed{\sf Acceleration=\dfrac{v-u}{t}}

\\ \rm\longmapsto Acceleration=\dfrac{19.4-5.05}{10}

\\ \rm\longmapsto Acceleration=\dfrac{14.3}{10}

\\ \rm\longmapsto Acceleration=143m/s^2

7 0
3 years ago
David ate 1/4 of a chocolate pie and peter ate 2/5.What fraction of the pie still remains?
spin [16.1K]

Answer:

Step-by-step explanation:

Pie eaten by David and Peter = (1/4) + (2/5)

                                                  = \frac{1*5}{4*5}+\frac{2*4}{5*4}\\\\=\frac{5}{20}+\frac{4}{20}\\\\=\frac{9}{20}

Remaining pie = 11/20

7 0
3 years ago
B Reading Choose the best estimate for the multiplication problem below. 85 x 86
Dmitry_Shevchenko [17]

Answer:

A. 8100

Step-by-step explanation:

85 x 86

To estimate, we multiply 85*100, which is the easiest multiplication, as a multiplication by 100 is the same as placing two zeros at the end of the number.

85*100 = 8500

Since 86 < 100, 85*86 < 8500. Thus, the correct estimate is given by option A.

5 0
3 years ago
Write the equation in slope form intercept m=-2(3,-1)
Lapatulllka [165]

Answer:

y = -2x + 5

Step-by-step explanation:

Find b using the m and (3, -1) given by plugging them into y = mx + b

-1 = -2(3) + b

-1 = -6 + b

5 = b

plub in m and b into y = mx + b

y = -2x + 5

5 0
3 years ago
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