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Kamila [148]
3 years ago
5

7y+5y-3y= How would I simplify this?

Mathematics
2 answers:
shusha [124]3 years ago
8 0

Answer:

9y

Step-by-step explanation:

Add 7y and 5y which equals 12y. Then subtract 3y from 12y and u get 9y. It might be wrong

rjkz [21]3 years ago
5 0

Let's simplify step-by-step.
7
y
+
5
y
−
3
y
=
7
y
+
5
y
+
−
3
y
Combine Like Terms:
=
7
y
+
5
y
+
−
3
y
=
(
7
y
+
5
y
+
−
3
y
)
=
9
y
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There are 15 candidates for 4 job positions.
Veronika [31]

Answer:

32760 ways

Step-by-step explanation:

Given

Number of Candidates = 15

Job Positions = 4

Required:

Number of outcomes

This question represent selection; i.e. selecting candidates for job positions;

This question can be solved in any of the following two ways

Method 1.

The first candidate can be chosen from any of the 15 candidates

The second candidate can be chosen from any of the remaining 14 candidates

The third candidate can be chosen from any of the remaining 13 candidates

The fourth candidate can be chosen from any of the remaining 12 candidates

Total Possible Selection = 15 * 14 * 13 * 12

<em>Total Possible Selection = 32760 ways</em>

<em></em>

Method 2:

This can be solved using permutation method which goes thus;

nPr = \frac{n!}{(n-r)!}

Where n = 15 and r = 4

So;

nPr = \frac{n!}{(n-r)!} becomes

15P4 = \frac{15!}{(15-4)!}

15P4 = \frac{15!}{11!}

15P4 = \frac{15*14*13*12*11!}{11!}

15P4 = 15*14*13*12

15C4 = 32760

<em>Hence, there are 32760 ways</em>

8 0
3 years ago
In a race, 41 out of the 50 bicyclists finished in less than 38 minutes. What percent of bicyclists finished the race in less th
storchak [24]
For left put 2 on each
On the box over 100 put 82, and put 82 in the box on the right
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Hey you can help help pls pls help help me
AleksandrR [38]

Answer:

A.)

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
-2log5 7x=2<br><br> the 5 is small please help me
RSB [31]
-2log_5 7x = log_5 2

log_5[1/(7x)^2] = log_5 2

log_5(1/49x^2) = log_5 2

log_5(1 - 49x^2) = log_5 2

1 - 49x^2 = 2

You finish.

3 0
3 years ago
Solve 19.9 = 9 y - 8.<br> Y=
Savatey [412]
The answer would be y = 3.1

19.9 + 8 = 9y

27.9 = 9y

27.9/9 = y

3.1 = y

y = 3.1.
3 0
3 years ago
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