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padilas [110]
3 years ago
15

Topic: Probability Only complete question 9.

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

a. H 1, H2 ,H3  T1 ,T2, H3

b  6 possible outcomes

c 2 outcomes for the coin ( h,T) 3 outcomes for the spinner

2*3 = 6

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I need help with this
Ostrovityanka [42]

Answer:

Christy is correct

Step-by-step explanation:

you dont say the numbers in words all the time, so it makes a lot more sense.

5 0
3 years ago
Twice a number (z) added to 21 is equal to 9 times the number added to 7. What is the number?
pickupchik [31]

Answer:

The number is  2

Step-by-step explanation:

Twice a number (z) = 2*z = 2z

Twice a number (z) added to 21  = 2z + 21

9 times the number added to 7 = 9z + 7

9z + 7 = 2z + 21

Subtract 2z form both sides

9z - 2z + 7 = 21

       7z + 7 = 21

Subtract 7 from both sides

7z = 21 - 7

 7z = 14

Divide both sides by 7

z = 14/7

z = 2

5 0
3 years ago
How can 17/20 and 7/4 make a sum of 9/10
Anika [276]

Answer:

the answer is \frac{35}{20}

Step-by-step explanation:

You have to find the common denominator in order to get the sum.

multiply 5 to \frac{7}{4} and you get \frac{35}{20}

then to double check the sum, subtract it.

\frac{35}{20}-\frac{17}{20}=\frac{9}{10}

hope this make sense :/

6 0
3 years ago
An equation is shown below: 5(2x - 8) + 15 = -15 Write the steps you will use to solve the equation and explain each step. (5 po
uranmaximum [27]

Answer:

x=1

Step-by-step explanation:

To solve this question we will have to open the bracket first

So let's solve the question

5(2x-8)+15=-15

Bracket first

10x-40+15=-15

We will have to solve the question further

10x-25=-15

Add 25 to both sides

10x=10

Let's make x the subject of formula by dividing both sides by 10

x=1

Therefore x is 1

8 0
3 years ago
Read 2 more answers
Least common multiple of 5, 25, 65
Lelechka [254]
325 is the answer to this equation.
7 0
3 years ago
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