The temperature 6 hours after day break is 53 degrees
Step-by-step explanation:
The temperature was 65 degrees at daybreak. Then it dropped two degrees per hour until dusk. This decrease in temperature can be modeled by the equation,
y = -2x + 65
according to this equation
y= temperature after day break
x= no of hours ( in this case 6)
So equation becomes
y= -2 (6) +65
y= 65- 12
y= 53 degrees
So the temperature 6 hours after day break is 53 degrees
Keywords: Algebra
Learn more about algebra at:
#learnwithBrainly
Answer:
1/2 and 3
Step-by-step explanation:
The quadratic formula is as given:
( -b±√(b^2-4ac) )/2a
To use it, plug in the a,b and c values.
ax^2+bx+c
In this case a is equal to 2, b is equal to -7, and c is equal to 3
plugging it into our formula gives us:
(-(-7)±√(-7^2-4*2*3) )/2*2
Which is equal to:
7±√(49-24) / 4
= 7±√25 / 4
=7±5 / 4
=2/4, 12/4= 1/2, 3
Rise/run 2.5/10 would be the answer
Answer:
C
Step-by-step explanation:
Because its a cost vs minutes graph, and it starts at (0,2) and goes to (1,5)
Answer:
16
Step-by-step explanation:
Let the number = x
x + x/2 - 20 = 1/4 x
3/2 x - 20 = 1/4x Multiply by 4
3*2 x - 80 = x
6x - 80 = x
6x - x - 80 = 0
5x - 80 = 0
5x = 80
x = 16
Check
16 + 8 - 20 = 1/4 * 16
24 - 20 = 4
4 = 4
