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Rudiy27
3 years ago
10

Solve the linear system by substitution. Worth 30 points!

Mathematics
2 answers:
Anastaziya [24]3 years ago
8 0
2(2y) +6y=15

10y=15
Y= 1.5
Tatiana [17]3 years ago
7 0
(x, y) = (3, 3/2)

Hope that I helped. :)
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Chelsea's school is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 adult tickets an
seropon [69]

Answer:

$7 for an adult ticket

$6 for a child ticket

Step-by-step explanation:

Add up the total child and adult tickets from both the days.

Adult tickets - 15

Child tickets- 10

Then I divided 165 but 25 and got 6.6.

The child ticket should be less than the adult so I guessed that the adult would be around $7 and the child ticket would be around 6.

I double checked my work by doing...

3*7 giving me 21

and

9*6 giving me 54.

Then I added these up to get $75 which was the total from the first day. This shows that our answer is correct

8 0
3 years ago
The number 21 is what percent of 75​
lesantik [10]

Answer:

28 percent

Step-by-step explanation:

To find what percentage of a number another number is, you can basically just divide it, 21/75 then you can multiply it by 100, so 21/75=0.28, and then 0.28*100=28, 21 is 28 percent of 75

5 0
3 years ago
There are 80 sixth graders, 90 7th graders, and 70 8th graders at your school. Every student gets entered in a raffle. What is t
Basile [38]

Answer:

P(seventh grade winner) = 3/8

Step-by-step explanation:

3 0
4 years ago
Easy math....<br><br> Fractions<br><br> 8/12 - 3/36 = ?<br><br> Simplify your answer
Law Incorporation [45]

7/12 is the answer simplifed already

7 0
4 years ago
Read 2 more answers
A line passed through the origin and has a slope of 1/2.
baherus [9]

Answer:

D. (2, 1)

Step-by-step explanation:

slope = 1/2

y-intercept = 0

Equation: y = 1/2 x

Choice A:

x = 0

y = (1/2)(0) = 0

Choice A does not work.

Choice B:

x = 1/2

y = (1/2)(1/2) = 1/4

Choice B does not work.

Choice C:

x = 1

y = (1/2)(1) = 1/2

Choice C does not work.

Choice D:

x = 2

y = (1/2)(1) = 1

Choice D works.

Answer: D. (2, 1)

5 0
3 years ago
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