What is f congruebt to i think it is congruent
make a proportion
<span>Let x = the amount of feet descended in 3 minutes (thus the total change of altitude of the balloon)
</span><span> 320 (feet per minute) / 1 (minute) = x (feet per minute) / 3 (minutes)
</span><span> 1) Divide: 320/1 = 320.
</span><span> 2) Multiply: 320 x 3= 960.
</span><span> The balloon that descends at a rate of 320 feet/minute (so, every minute, it descends 320 feet) descends a total of 960 feet in 3 minutes.
</span><span> The balloon's total change in altitude is -960 feet. </span>
Answer:
how is this middle school work
Step-by-step explanation:
tell your teacher you need help
Answer:
56
Step-by-step explanation:
Complete question:
Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)
If z varies jointly with x, and y, this is expressed as;
z = kxy
If z=7 when x= 2, y= 2
7 = k(2)(2)
7 = 4k
k = 7/4
To get z when x= 4 and y = 8
z = kxy
z =7/4 (4)(8)
z = 7*8
z = 56
Hence the value of z is 56
<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
