12) Josh has $252 in his bank account. This is $12 more than 6 times the amount of money

How much soil with 10% clay do you need to add to 3 m3 of soil with 50% clay In order to make a soil with 22% clay?

Anarel [89]

0.1c + 27*0.5c = .22c

4 0

3 years ago

A stone is thrown straight up from earth with D(t)= -4.9 t^2 + vt where D = height in meters, t= time in seconds, and v= initial

Vedmedyk [2.9K]

Answer:

(a) D(t)= -4.9 t^2 + vt

(b) 10 sec

(c) 122.5m

(d) At t= 4sec, v= 9.8m/s (upwards) and at t= 9sec, v= 39.2m/s (downwards)

(e) -24.5m

(f) -49m/s (i.e. downwards)

(g) 0

Step-by-step explanation:

(b) Time in the air = 2v/g = 10sec

(c) Maximum height = $\frac{v^{2} }{2g}$ =122.5m

(d) Velocity at any time t = v -9.8t

So, at t= 4sec, velocity = 49 – 9.8(4) =9.8m/s

at t= 9sec, velocity = 49 – 9.8(9) = -39.2m/s

(e) Average velocity = $\frac{\int\limits^9_4 {v-9.8t} \, dt }{\int\limits^9_4 {1} \, dt }$ = -24.5m

(g) the stone is thrown vertically upwards, so no horizontal distance covered.

7 0

4 years ago

84 is 35% of which of the following value

faust18 [17]

Answer:

28.56

Step-by-step explanation:

Feel free to give brainliest.

Have a great day!

7 0

3 years ago

The degree of the polynomial p(y) =(y-4)^3-y^3 is<br><br>Plz urgent

Scilla [17]

Answer:

The degree of polynomial is 2

Step-by-step explanation:

Given

$p(y) = (y -4)^3 - y^3$

Required

The degree

When expanded, $p(y) = (y -4)^3 - y^3$ is:

$p(y) =y^3-12y^2+48y-64-y^3$

Collect like terms

$p(y) =-12y^2+48y-64-y^3+y^3$

$p(y) =-12y^2+48y-64$

<em>The degree of freedom is 2</em>

4 0

3 years ago

Why is thinking about the problem before you work important?

777dan777 [17]

Answer: It's good to think about things before doing them because it is more thought out and you have a better chance of getting things correct whereas without thinking your most likely going to get it wrong. Without thinking through your options you are basically guessing the answer. I hope this helped you have a great day and god bless you :D

7 0

3 years ago