I think the answers would be
four outcomes (bc four colors)
and
a 36% chance of grabbing a blue marble (4blue/11total)
Answer:
Let y represents the maximum variation in the level of chlorine,
Given,
Level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm.
So, the standard level of chlorine = 1.75 + y or 3.25 - y
⇒ 1.75 + y = 3.25 - y
⇒ 2y = 5
⇒ y = 2.5
Thus, the standard level would be 2.5 ppm,
If x represents the present level of chlorine,
Then it would be lie within 1.75 ppm of 3.25 ppm.
If the difference between x and standard level ≤ Maximum variation
⇒ |x-2.5| ≤ 0.75
Which is the required absolute value inequality to represent this situation.
b. If x = 1.0 ppm,
Since |1.0-2.5|=1.5 which is not less than equal to 0.75,
Hence, he should add more chlorine.
Step-by-step explanation:
Answer:
x=3/2, x=-4
Step-by-step explanation:
2x^2 + 5x - 12
First lets see if we can factor this
(2x ) ( x )
-12 = -1*12 1*-12
- 2*6 2 * -12
- 3*4 3 * -4
2 * one of these pairs - the other pair = +5
2*4 -3 = 5
Put the -3 in the first spot and the 4 in the second spot
(2x-3) ( x+4)
Using the zero product property
2x-3 =0 x+4=0
2x=3 x=-4
x = 3/2
Answer:
1) 10
Basic facts:
<em>we can tell a right angle if there is a small square drawn where the angle measuring should be done</em>
Step-by-step explanation:
<u>Main step</u>
<u>90-60=30</u>
<u>30=3x</u>
<u>divide by 3</u>
<u>10 =x</u>
the value of x is 10
so option 1