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lys-0071 [83]
3 years ago
9

Write the quadratic equation in factored form: x^2 + x - 20

Mathematics
1 answer:
Natali [406]3 years ago
3 0

Answer:

x=18 ....

Step-by-step explanation:

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The explicit rule for the arithmetic sequence shown in the graph is a↓n=9.5+2(n-1)
Virty [35]

Answer:

True.

Step-by-step explanation:

The explicit form for an arithmetic sequence is:

a_n=a_1+d(n-1)

where a_1 is the first term and d is the common difference.

The common difference here is 2 because the y's are going up by 2 while the x's are going up by 1.

Yes, the common difference is the slope.

So we have d=2.

The first term is 9.5 because that is what happens when x=1.

x is n.

y is a_n.

So the answer is true.

----

You can also verify by plugging in numbers for n and see if you get the outputs mentioned in the pairs given:

Let n=1:

a_1=9.5+2(1-1)

a_1=9.5+2(0)

a_1=9.5+0

a_1=9.5

Let n=2:

a_2=9.5+2(2-1)

a_2=9.5+2(1)

a_2=9.5+2

a_2=11.5

Let n=3:

a_3=9.5+2(3-1)

a_3=9.5+2(2)

a_3=9.5+4

a_3=13.5

Let n=4:

a_4=9.5+2(4-1)

a_4=9.5+2(3)

a_4=9.5+6

a_4=15.5

Let n=5:

a_5=9.5+2(5-1)

a_5=9.5+2(4)

a_5=9.5+8

a_5=17.5

Let n=6:

a_6=9.5+2(6-1)

a_6=9.5+2(5)

a_6=9.5+10

a_6=19.5

We have confirmed that we get all 6 of the mentioned points using the equation they gave.

5 0
3 years ago
Round of the following to the given nearest place1)4065 in hundred 2)44555 in thousands​
Inessa05 [86]

Answer:

1)  4100

2) 45000

Step-by-step explanation:

5 0
3 years ago
Which number rounds to 65.8 when rounded to the nearest tenth
e-lub [12.9K]

Answer:

65.8

Step-by-step explanation:

5 0
3 years ago
What is the smallest number with three different prime factors which is not a multiple of 3 or 5?
weeeeeb [17]
Primes are
2,3,5,7,11,13...
ok, so it must be multiplule of 2,7 and 11
2*7*11=154

answer is 154

4 0
3 years ago
W/6+5/8= -1 3/8 plz can someone show me how to do this
inessss [21]

Answer:w=-12

Step-by-step explanation:hope this helps! :)

6 0
3 years ago
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