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Doss [256]
3 years ago
6

Which table(s), if any, represents a proportional relationship? Explain.

Mathematics
1 answer:
Wewaii [24]3 years ago
4 0

Answer:

The answer is Table 2.

Step-by-step explanation:

The answer is Table 2 because it has a proportional relationship. How I know it is a proportional relationship is because it said

0:0

1:10

2:20

3:30

4:40

5:50

If you look at it closely then you will see the 10 and 1's time table.

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(a) Use the fundamental theorem of algebra to determine the number of roots for 2x^2 + 4x + 7
zysi [14]

Answer:

Step-by-step explanation:

A 2nd order polynomial such as this one will have 2 roots; a 3rd order polynomial 3 roots, and so on.

The quadratic formula is one of the faster ways (in this situation, at least) in which to find the roots.  From 2x^2 + 4x + 7 we get a = 2, b = 4 and c = 7.

Then the discriminant is b^2 - 4ac, or, here, 4^2 - 4(2)(7), or -40.  Because the discriminant is negative, we know that the roots will be complex and unequal.

Using the quadratic formula:

       -4 ±√[-40]         -4 ± 2i√10

x  = ------------------ = ------------------

                4                       4

                                       -2 ± i√10

Thus, the roots are x = ------------------

                                               2

4 0
3 years ago
X/a+y/a=1 solve for y
IRISSAK [1]
X/a=0.5
y/a=0.5
X+y/a
a=2
X=1
y=1
x+y=a(1)
1+y=2(1)
y=2-1
y=1
4 0
3 years ago
Write -0.37 as a quotient of integers to show that is rational.
Gnoma [55]

Answer:

'

Step-by-step explanation:

'

7 0
2 years ago
Find the number of real number solutions for the equation. x2 + 5x + 7 = 0
horsena [70]
X=-1
-1x2 + 5x-1 +7 = 0
-7+7 =0
0=0
6 0
3 years ago
Lily drives 90 miles in 2 hours. If she drives at the same rate, how far does lily travel in each of the following time interval
kakasveta [241]

Answer:

1 hour= 45 miles

1/2 hour=22.5 miles

3 hours= 135

Step-by-step explanation:

just work out one hour by halving 90 miles which is 45. Then work out the rest by halving again and multiplying by 3.

5 0
2 years ago
Read 2 more answers
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