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2 years ago

20 multiplied by three

Mathematics

2 answers:

vodomira [7]2 years ago

7 0

The answer is 60 because 2x3 is 6 so 20x 3 is 60

larisa [96]2 years ago

4 0

When you have a multiplication problem add the highest number to itself as many times as the other number so like 10 x 5 add 10 together 5 times
ANSWER WOULD BE 60 BECAUSE
add 20 to itself 3 times
20 plus 20 plus 20
Which is 60
It really helps I swear :))

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An urn contains 12 balls, of which 4 are white.

wel

Answer:

a) $\frac{1}{3}$

b) $\frac{4}{12}\,,\,\frac{4}{11}\,,\,\frac{4}{10}\,,...$

Step-by-step explanation:

Number of balls in the urn = 12

Number of white balls in the urn = 4

So, number of balls which are not white = 12 - 4 = 8

We know that probability = No. of outcomes/Total number of outcomes

Let $A_i\,,\,B_i\,,\,C_i$ denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

Probability = Number of white balls/Total number of balls

Solution: $P(A_i)=P(B_i)=P(C_i)=\frac{4}{12}=\frac{1}{3}$

b)the balls that are withdrawn are not replaced.

Solution:

If A wins: $P(A_1)=\frac{4}{12}=\frac{1}{3}$

If A lost and B wins: $P\left ( B_1|A_1^{c} \right )=\frac{4}{11}$

If A and B lost and C wins: $P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}$

and so on....

4 0

3 years ago

In the first half of a basketball game, a player scored 9 points on free throws and then scored a number of 2-port

Mashcka [7]

Answer: I thin The first one 2r+3r+9

Step-by-step explanation: Because he scored a number of 2 port shots which means he scored more than one but the 9 points is just 9 points from free throws which gives only 1 point each and 3 port shots and much as 2 point shots so 3r also

2r+3r+ just 9

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2 years ago

X-y=3<br> X+2y=-6<br> Solve using substitution

Tresset [83]

X-y=3=>x=3+y
X+2y=-6
=========
3+y+2y=-6
3+3y=-6
3y=-6-3
3y=-9
y=-3

X+2y=-6
X+2(-3)=-6
X-6=-6
X=0

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2 years ago

What is the right answer I do t know it

sweet-ann [11.9K]

Answer:

the answer to what?

Step-by-step explanation:

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3 years ago

Which of the following numbers can be expressed as repeating decimals? (5 points) 4 over 7 , 2 over 5 , 7 over 8 , 4 over 9 4 ov

Black_prince [1.1K]

Answer:

4/9

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers