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Oksanka [162]
3 years ago
11

Examine the system of equations. -5 + 5y = 40 4x + 3y = 24 What is the solution?

Mathematics
2 answers:
viktelen [127]3 years ago
8 0
X=-3/4 or -0.75 and y=9
Work is in the picture if you need it.

eimsori [14]3 years ago
3 0
For the -5+5y=40 the answers is y=9
And for 4x+3y=24 is x=-3/4y +6
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if 42% of a crowd of 3850 at a football match were females, how many females attended the football game?
sweet [91]

Answer: 1617

Step-by-step explanation:

You would need to find 42% of 3850

Convert 42% into decimal:

42/100 = 0.42

Multiply:

0.42*3850

= 1617

Therefore, there were 1617 females that attended the game

7 0
3 years ago
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4 0
3 years ago
Thirty students in the fifth grade class listed their hair and eye colors in the table below: Brown hair Blonde hair Total Green
Mars2501 [29]

Answer:

No, the events "brown hair" and "brown eyes" are not  independent.

Step-by-step explanation:

The table that represents the  hair and eye colors of thirty students of the fifth grade are given in table as:

                         Brown hair          Blonde hair              Total

Green eyes           9                       6                               15

Brown eyes          10                       5                              15

Total                     19                        11                             30

No, the events  "brown hair" and "brown eyes" are not independent.

Since, two events A and B are said to be independent if:

P(A∩B)=P(A)×P(B)

where P denotes the probability of an event.

Here we have:

A= students having brown hair.

B= students having brown eyes.

A∩B= students having both brown hair and brown eyes.

Now,

P(A)=19/30  (ratio of addition of first column to the total entries)

P(B)=15/30  ( ratio of addition of second row to the total entries)

Also,

P(A∩B)=10/30

Now as:

P(A∩B) ≠ P(A)×P(B)

Hence, the two events are not independent.

8 0
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Step-by-step explanation:

6 0
3 years ago
6f-7=29;5 what is this answer or how do you do i am having trouble finding it out
erik [133]
6(5)-7
30-7
23
The answer is false because it doest equal 29
8 0
3 years ago
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