<h2>
The value of x = 36</h2>
Step-by-step explanation:
We have,
x, 45, 40 and 50 are in a proportion.
x : 45 : : 40 : 50
To find, the value of x = ?
We know that,
a : b : : c : d
Product of means = Product of extremes
a × d = b × c
∴ a × d = x × 50
Also,
b × c = 45 × 40
∴ x × 50 = 45 × 40
⇒ x =
⇒ x =
⇒ x = 9 × 4 = 36
∴ The value of x = 36
Answer:
t=0.64
Step-by-step explanation:
h = -16t^2 +4t +4
We want h =0 since it is hitting the ground
0 = -16t^2 +4t +4
Using the quadratic formula
a = -16 b = 4 c=4
-b ± sqrt( b^2 -4ac)
----------------------------
2a
-4 ± sqrt( 4^2 -4(-16)4)
----------------------------
2(-16)
-4 ± sqrt( 16+ 256)
----------------------------
-32
-4 ± sqrt( 272)
----------------------------
-32
-4 ± sqrt( 16*17)
----------------------------
-32
-4 ± sqrt( 16) sqrt(17)
----------------------------
-32
-4 ± 4 sqrt(17)
----------------------------
-32
Divide by -4
1 ± sqrt(17)
----------------------------
8
To the nearest hundredth
t=-0.39
t=0.64
Since time cannot be negative
t=0.64
Answer is 108 pages. 1/3 of an hr is 20 min. 20*3=60 which is an hr. 3+3=6. So then you get 6*18=108.
Answer:
Step-by-step explanation:
Rewrite the division as a fraction.
Answer:
150 miles
Step-by-step explanation: The distance from Page to Flagstaff can be shown with the equation d = r * t, or distance = rate * time. In this case, the rate is 60 mph, and the rate is 2.5 h. Plugging that into the equation you get d = 2.5(60) = 150, giving you your distance.