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Hitman42 [59]
3 years ago
14

2x+y=3 x=3+y This is an equation of substitution and I need help

Mathematics
2 answers:
Aliun [14]3 years ago
7 0
2(3+y)+y=3
6+3y=3
Y=-1
Substitute to solve for x
X=3-1
X=2
laiz [17]3 years ago
7 0
Solution:(1,1)
replace the x if the first equation with the second equation then solve. Then take that solution and put it in for the y and solve.
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How much cheaper per ounce is purchasing 7 ounces for $7.84 compared to purchasing 5 ounces for $5.70
WARRIOR [948]
7.84/7 = $1.12
5.70/5 = $1.14
1.14 - 1.12 = .2
2 cents cheaper
7 0
3 years ago
Write a rule for the nth term of the sequence 15, 19, 23, 27
Mkey [24]

Answer:

aₙ= 4n+11

Step-by-step explanation:

the sequence 15, 19, 23, 27

is AP with the first term 15 and

the common difference 19-15=23-19=27-23= 4

aₙ= a₁+(n-1)d

aₙ= 15+(n-1)*4= 15+4n- 4= 4n+11

aₙ= 4n+11

5 0
3 years ago
Ryan can text 22 words in 4 minutes. At this rate, how many words could he text in 12 minutes? Fill out the table of equivalent
aleksandrvk [35]
The answer would be 66
Explanation: first you have to divide the minutes so 12 divided by 4 equals 3 so you would take the three and multiply that by 22. So 22x3 is equal to 66
3 0
3 years ago
From the top of a tree a bird looks down on a field mouse at an angle of depression of 50 degrees if the field mouse is 40 M fro
Zepler [3.9K]
The tangent function gives the ratio of vertical to horizontal distance in this case.
.. vertical distance = (horizontal distance)*tan(angle of depression)
.. = (40 m)*tan(50°)
.. vertical distance ≈ 47.7 m
6 0
3 years ago
If Andrea makes $10 per hour and Cassidy makes eight dollars per hour how much more by percent does Andrea make than Cassidy per
Alexus [3.1K]
Hey there!


Andrea makes 20% more than Cassidy.

Work:

10 x 0.20 = 2

10 - 2 = 8


So that proves it is 20%.


Hope this helps!
5 0
3 years ago
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