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BigorU [14]
3 years ago
7

Comparing decimalsIs 1.8 < or = to 1.80?

Mathematics
2 answers:
konstantin123 [22]3 years ago
5 0
1.8 = 1.80
If there is a 0 after any number in a decimal it has no value,
for example, 1.2323000 = 1.2323
andrew11 [14]3 years ago
3 0
They are equal to because zero has no meaning so they are equal
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Solve the equation x2 – 10x – 8= 0 to the nearest tenth.
4vir4ik [10]

Answer:

x = -0.8 and 10.8

Step-by-step explanation:

Given the equation x2 – 10x – 8= 0

Using the general formula

x = -b±√b²-4ac/2a

x = -(-10)±√(-10)²-4(1)(-8)/2(1)

x = 10±√100+32/2

x =10±√132/2

x = 10±11.489/2

x = 10-11.489/2 and 10+11.489/2

x = -1.489/2 and 21.489/2

x = -0.8 and 10.8

3 0
3 years ago
The give reasoning part for this is not correct. does anyone know the right answer
Paraphin [41]

Answer:

80 degree angle while  second has a 50 degree angle(looks like an icecream cone)

Step-by-step explanation:

3 0
3 years ago
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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
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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
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2) for radius r=10 units
volume of a sphere=(4/3)*pi*10³----> 4186.67 unit³
surface area=4*pi*10²----> 1256 units²
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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
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7 0
3 years ago
Tina wants to buy concert tickets for her family. She is trying to figure out how much money she needs to
UNO [17]

Answer: its 35.99

Step-by-step explanation:

also known as y=35.99x (y=kx)

5 0
3 years ago
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mr_godi [17]

Answer:

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Step-by-step explanation:

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5 0
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