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seraphim [82]
3 years ago
7

Which expression is equivalent to 9(9m + 3t)?

Mathematics
1 answer:
Tema [17]3 years ago
6 0
Answer= the 4th option

Explanation: I took the test
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What is Y+1=2/5(x+3) in standard form
sesenic [268]

Answer:

x=  5y−1  over  2

Step-by-step explanation:

8 0
3 years ago
Approximate the change in the volume of a sphere when its radius changes from r = 30 ft to r=10.1 ft [v(r)=4/3Ï€r^3]. When r cha
ella [17]

Answer: ∆V for r = 10.1 to 10ft

∆V = 40πft^3 = 125.7ft^3

Approximate the change in the volume of a sphere When r changes from 10 ft to 10.1 ft, ΔV=_________

[v(r)=4/3Ï€r^3].

Step-by-step explanation:

Volume of a sphere is given by;

V = 4/3πr^3

Where r is the radius.

Change in Volume with respect to change in radius of a sphere is given by;

dV/dr = 4πr^2

V'(r) = 4πr^2

V'(10) = 400π

V'(10.1) - V'(10) ~= 0.1(400π) = 40π

Therefore change in Volume from r = 10 to 10.1 is

= 40πft^3

Of by direct substitution

∆V = 4/3π(R^3 - r^3)

Where R = 10.1ft and r = 10ft

∆V = 4/3π(10.1^3 - 10^3)

∆V = 40.4π ~= 40πft^3

And for R = 30ft to r = 10.1ft

∆V = 4/3π(30^3 - 10.1^3)

∆V = 34626.3πft^3

3 0
4 years ago
Could somebody answer this
solmaris [256]
The gradient for a parallel line is the same.
perpendicular lines are negative reciprocals.
so all you have to do is re arrange it so y=Mx+b so the check out the gradients to what I listed above... remember y shouldn't have any number on it.
3 0
3 years ago
What is square root of 9
klemol [59]

Answer:

3

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which of the following is/are cube(s) of even number (i) 249 (ii) 50653
irinina [24]

Answer:

None (If there are just these two options i.e, 249 and 50653. I think there are more options, anyway)

Step-by-step explanation:

Cubes of even numbers are even and cube of odd numbers are odd.

Since both the numbers are odd, both of their cubes must be odd too.

Thank You

Hope this helps you

Please mark as brainliest

5 0
3 years ago
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