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3 years ago

Start time: 3:30 PM End time: 7:00 PM Elapsed time:

Mathematics

1 answer:

JulijaS [17]3 years ago

5 0

Answer:

3hr 30min

Step-by-step explanation:

3hr 30min

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Simply the expression by combining like terms 20c+8d+10c-5d

valentinak56 [21]

First, combine 20c and 10c because they are like terms then combine 8d and -5d.

It would look like this:

20c+8d+10c-5d

30c+3d

Hope that helps

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2 years ago

Which percent is equal to 0.35?

Rama09 [41]

Answer:

35%

Step-by-step explanation:

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2 years ago

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If the are 5 buses and the quatation amount is R8,100 how much will each person pay

Nina [5.8K]

Answer:

R1620

Step-by-step explanation:

1620 ×1=1620

1620×2=3240

1620×3=4860

1620×4=6480

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2 years ago

(4) A spherical balloon is being inflated so that its diameter is increasing at a constant rate of 6 cm/min. How quickly is the

fredd [130]

In terms of its radius $r$ , the volume of the balloon is

$V(r)=\dfrac{4\pi}3r^3$

The diameter $d$ is twice the radius, so that in terms of its diameters, the balloon's volume is given by

$V(d)=\dfrac{4\pi}3\left(\dfrac d2\right)^3=\dfrac\pi6d^3$

Differentiate both sides with respect to time $t$ :

$\dfrac{\mathrm dV}{\mathrm dt}=\dfrac\pi2d^2\dfrac{\mathrm dd}{\mathrm dt}$

The diameter increases at a rate of $\frac{\mathrm dd}{\mathrm dt}=6\frac{\rm cm}{\rm min}$ . When the diameter is $d=50\,\mathrm{cm}$ , we have

$\dfrac{\mathrm dV}{\mathrm dt}=\dfrac\pi2(50\,\mathrm{cm})^2\left(6\frac{\rm cm}{\rm min}\right)=7500\pi\dfrac{\mathrm{cm}^3}{\rm min}$

or about 23,562 cc/min (where cc = cubic centimeters)

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3 years ago

Factor completely.<br> 16-49x^2=16−49x <br> 2<br> = <br> (Can someone help me plz)

MrRa [10]

X=0,1
Pls mark brainliest

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3 years ago