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Pavlova-9 [17]
3 years ago
9

PLEASE HELP! 8 points!! Find the first 5 terms.

Mathematics
1 answer:
Mumz [18]3 years ago
3 0

Answer:

2, 6, 12, 20, 30

Step-by-step explanation:

To find the first 5 terms, substitute n = 1, 2, 3, 4, 5 into the rule

a₁ = 1² + 1 = 1 + 1 = 2

a₂ = 2² + 2 = 4 + 2 = 6

a₃ = 3² + 3 = 9 + 3 = 12

a₄ = 4² + 4 = 16 + 4 = 20

a₅ = 5² + 5 = 25 + 5 = 30

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Step-by-step explanation:

Now you can plot by referring to the above factors

8 0
3 years ago
Julia is taking a test with multiple choice and true/false question the test has twentg question altogether . julia gets five po
Sonbull [250]
X=number of corect
y=number of incorrect
5 points for each correct so 5x
-1 point for each incorrect so -y

5x-y=76
solve for x and y

I like putting it into slope intercep tofrm which is y=mx+b
add y to both sides
5x=76+y
subtract 76 from both sides
5x-75=y
y=5x-76

subsitute values for x and get values for y
remember, that julia cannot answer a negative number of incorrect questions so y must be greater than or equal to 0

so solve for minimum
0<u><</u>5x-76
add 76 to both sides
76<u><</u>5x
divide by 5
15.2<u><</u>x
you cannot answer a fraction of a correct quesiton so round up
16 is the minumum number of queswtions correctlyh answered


so
x<u>></u>16

subsitute 16 for x
y=5(16)-76
y=80-76
y=4

as we subsitute more numbers over 16, we get these points
so (x,y) 
(16,4)
(17,9)
(18,14)
(19,19)
(20,24)
(21,29)
(22,34)
(23,39)
x=correct answer
y=wrong answers
5 0
3 years ago
You start driving north for 9 miles, turn right, and drive east for another 40 miles. At the end of driving, what is your straig
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Step-by-step explanation:

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IgorLugansk [536]

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12.5

Step-by-step explanation:

first you do the one in the 40-15 then you add 50 the you divide by 6

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In order for a field trip to be scheduled, at least 30 students
Stella [2.4K]

Answer:

7 more students need to sign up.

Step-by-step explanation:

if you subtract the number of students needed by the number of students you have, you get 7 (30-23)

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