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o-na [289]
3 years ago
6

Worth 40 points with a brainliest if you have an explanation.

Mathematics
1 answer:
Ivenika [448]3 years ago
7 0

Answer: 4,280

Step-by-step explanation:

Hi

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Let g(x)= -7x + 4. Find the following <br> g(-5)
777dan777 [17]

Answer:g(-5)=39

Step-by-step explanation:plug -5 in for x and solve. -7*-5=35 35+4=39

8 0
3 years ago
What size does the radius of a sphere need to be for its volume to be larger than its surface area? HINT! It is less than 10. HI
Lera25 [3.4K]
We know that
volume of a sphere=(4/3)*pi*r³----> (r/3)*(4*pi*r²)
and
surface area of sphere=4*pi*r²
so
the volume of a sphere=(r/3)*surface area of sphere
therefore
if r=3
volume of a sphere=(3/3)*surface area of sphere
volume of a sphere=surface area of sphere

if r> 3
the term (r/3) is > 0
so
volume of a sphere > surface area of sphere

if r<3
the term (r/3) is < 0
so
volume of a sphere < surface area of sphere

examples
1) for radius r=3 units
volume of a sphere=(4/3)*pi*3³----> 113.04 unit³
surface area=4*pi*3²----> 113.04 units²
volume is equal to surface area

2) for radius r=10 units
volume of a sphere=(4/3)*pi*10³----> 4186.67 unit³
surface area=4*pi*10²----> 1256 units²
volume is > surface area

3) for radius r=2 units
volume of a sphere=(4/3)*pi*2³----> 33.49 unit³
surface area=4*pi*2²----> 50.24 units²
volume is <  surface area
7 0
3 years ago
Will mark Brainleist need help quick Pls Help
VMariaS [17]

I belive the 3rd picture is A so sorry if i get this wrong

7 0
3 years ago
Read 2 more answers
Solve the equation below for W.<br>- 4w + 5 = w+ 2 - 6​
lana [24]

Answer:

The answer to the equation is W=1.8

8 0
3 years ago
What is x (in degrees)
spin [16.1K]

Step-by-step explanation:

The reason why all the addition of the all the triangle's angles is equal to 180° is because it's a rule

REMEMBER THAT RULE !!!!

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)

3 0
3 years ago
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