Answer:
Two real roots
Step-by-step explanation:
The portion of the quadratic formula that determines the number of roots is
b² - 4ac
If it's positve there are two real roots
If it's zero there is one real root
If it's negative there are no real roots
------------------------------
b² - 4ac = 7² - 4(3)(-8)
b² - 4ac = 49 + 96
b² - 4ac = 145
Two real roots since 145 is positive
Answer:
1st and 4th
Step-by-step explanation:
goodluck!
Answer:
57kg
Step-by-step explanation:
We need to find the length of each piece of metal:
We already know that 2 of them are 6m and 8m and this would be the same for the pieces of metal opposite.
So we have four lengths - 6m, 6m, 8m, and 8m
To find the last length, we need to use pythagoras theory
a² + b² = c² where c is the slanted side, or the diagonal
6² + 8² = c²
36 + 64 = 100
c² = 100
c = √100 = 10
So the five lengths are 6m, 6m, 8m, 8m, and 10m and the total is 38m
If:
1m = 1.5kg
38m = ?kg
We have to multiply both sides by 38
1m × 38 = 38m
1.5kg × 38 = 57kg
So, the total weight of metal in the frame is 57kg
So! We want to make sure that each gift shop gets as much as the other giftshop, and each nursery gets as much as the other nursery! So, we set up a table!
Gift Shops I Nurseries
________ I _________
28 I 4
22 I 8
18 I 12
16 I 16
12 I 20
8 I 24
4 I 28
And so on. We can figure out the exact number by dividing 28 by 4.(No odd number can be chosen for the two locations that each column specifies, as you cannot divide an odd equally.)
<span>The answer is 7!
Checking~~~
28/4 = 7
4 is the minimum amount of flowers a gift-shop/nursery can get.
Therefore, the answer is correct. </span>
