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DIA [1.3K]
3 years ago
9

8. 36.8 = [11.5 – (2.5 X 3)]2

Mathematics
1 answer:
Anestetic [448]3 years ago
6 0

Answer:

[11.5-(2.5*3)]^2=16

Step-by-step explanation:

We want to evaluate [11.5-(2.5*3)]^2

Let us evaluate within the parenthesis first:

[11.5-(2.5*3)]^2=[11.5-(7.5)]^2

\implies [11.5-(2.5*3)]^2=[11.5-7.5]^2

We again subtract within the bracket to obtain:

[11.5-(2.5*3)]^2=[4]^2

This finally gives us:

[11.5-(2.5*3)]^2=16

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Please help asap! xoxo
alexira [117]

Answer:

A. x = 6

Step-by-step explanation:

a^2 + b^2 = c^2

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64 + b^2 = 100

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b^2 = 36

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6 0
3 years ago
There are six girls and seven boys in the class a team of 10 players is to be selected from the class how many different combina
sweet [91]

Answer:

In 286 different ways 10 players can be selected.

Step-by-step explanation:

There are 6 girls and 7 boys in a class. So in total there are 6+7 = 13 number of students in the class.

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As there is no other conditions are given, we can pick any 10 students from 13 students.

The way we can select 10 players from 13 students is;

= (13 10)

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= ( 13 × 12 × 11)/6

= 286

5 0
3 years ago
2x + y = 20<br> 6x - 5y =12
Vera_Pavlovna [14]
Rearrange the first equation
2x + y = 20
take away 2x from both sides
y = 20 - 2x 
substitute this y value into the second equation
6x - 5(20 - 2x) = 12
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add 100 to both sides
6x + 10x = 112
16x = 112
divide both sides by 16 
x = 7
Substitute this x value into the first equation to get y.
2(7) + y = 20
14 + y = 20
take away 14 from both sides
y = 6

So, y = 6 and x = 7
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Answer:

the answer is 85.96

Step-by-step explanation:

Hope this helps, =)

6 0
3 years ago
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