Remember that quadratic formula:
is used to solve quadratic equations of the form
.
Four our problem, the first one,
, is not in the form
. So is not a good idea to use the quadratic formula for this one.
The second one,
, is in the correct form. Notice that in this equation
,
, and
.
It would be appropriate to use the quadratic formula to solve this one.The third one,
, can be expressed as:
. This equation is also in the correct form. Here
,
, and
.
It would be appropriate to use the quadratic formula to solve this one.The fourth one,
, is not in the form
. So is not a good idea to use the quadratic formula for this one.
We can conclude that you should use the quadratic formula to solve the
second and
third equations.
Answer:
5/8
Step-by-step explanation:
So, if we add 7 + 12, then it seems that 19 of the 24 students play one of the two sports. But there are 4 students that play both, so we must account for that.
To get the actual number of students that play sports, we must subtract 4 from 19.
19 - 4 = 15
So now we know that 15 out of the 24 students play sports.
We can divide 15 and 24 by 3 to find the simplified fraction.
15 / 3 = 5 24 / 3 = 8
So 5 out of every 8 students plays one of these sports, which means that the probability of picking one of these students is 5/8!
Answer:
ok i cant tell if the dot is a decimal or a spot, im thinking its just a spot
so the answer would be 8:2 4:1 2:0.5
Step-by-step explanation:
if it is a decimal
the first box would be 8:0.2
false stretching should never be painful soreness and pain are different:)
Answer:
4
Step-by-step explanation: