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ololo11 [35]
3 years ago
13

Use the substitute method to solve the system of equation choose the correct ordered parir x+y=12 -x=-y-10

Mathematics
1 answer:
dangina [55]3 years ago
3 0
I wanna say the answer is x+y=12 simply because when writing equations with variables you go in alphabetical order with the variables on the same side
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20 people applied for a job. Everyone either has a school certificate or diploma or even both. If 14 have school certificates an
STatiana [176]

Given:

Either has a school certificate or diploma or even both = 20 people

Having school certificates = 14

Having diplomas = 11

To find:

The number of people who have a school certificate only.

Solution:

Let A be the set of people who have school certificates and B be the set of people who have diplomas.

According to the given information, we have

n(A)=14

n(B)=11

n(A\cup B)=20

We know that,

n(A\cup B)=n(A)+n(B)-n(A\cap B)

20=14+11-n(A\cap B)

20=25-n(A\cap B)

Subtract both sides by 25.

20-25=-n(A\cap B)

-5=-n(A\cap B)

5=n(A\cap B)

We need to find the number of people who have a school certificate only, i.e. n(A\cap B').

n(A\cap B')=n(A)-n(A\cap B)

n(A\cap B')=14-5

n(A\cap B')=9

Therefore, 9 people have a school certificate only.

3 0
3 years ago
Which is greater 27 or 72
svetoff [14.1K]

Answer:

72??? For greater wise? Then yeah, 72.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Determine the promotional price of each item at each store
MAXImum [283]

Answer:

Step-by-step explanation:

Original price of the music box = $80

Price after 20% discount = Original price - discount

                                         = 80 - 20% of 80

                                         = 80 - (\frac{20}{100}\times 80)

                                         = 80 - 16

                                         = $64

Price after 40% discount = 80 - 40% of $80

                                         = 80 - 32

                                         = $48

Original price of A faux Ming vase = $60

Price after 20% discount = Original price - discount

                                         = 60 - 20% of $60

                                         = 60 - 12                                    

                                         = $48

Price after 40% discount = Original price - discount

                                         = 60 - 40% of 60

                                         = 60 - 24

                                         = $36

8 0
3 years ago
Is the function tan t positive or negative in quadrant IV
Fofino [41]

tan t is negative in quadrant IV and positive in quadrants 1 / 3


7 0
4 years ago
Read 2 more answers
Help? please and thank you​
11111nata11111 [884]

Answer:

first one

relationship between base and perpendicular is

given by tan angle

tan x=P/h

remember perpendicular is opposite side of taken angle

tan x=13/8

<x=tàn-¹(13/8)=58.39°

for second one

relationship between base and hypotenuse is given by cos angle

cos G=b/h

cos G=24/32

<G=cos-¹(24/32)=41.4 is your answer

8 0
3 years ago
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