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Virty [35]
3 years ago
6

Someone please help! I’ll give brainliest!!

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
8 0

Answer:

120m3

Step-by-step explanation:

V=4/3 x π x r³

  = 4/3 x 3.14 x 3.1³

  ≈ 120 (nearest tenth)

stiks02 [169]3 years ago
3 0
120m3 just took the assignment
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How many gallons of a 90% antifreeze solution must be mixed with 90 gallons of 20% antifreeze to get a mixture that is 80% antif
lozanna [386]

Answer:

540

Step-by-step explanation:

Amount of antifreeze in the 90% solution + amount of antifreeze in the 20% solution = amount of antifreeze in the 80% solution

0.90 x + 0.20 (90) = 0.80 (x + 90)

0.90 x + 18 = 0.80 x + 72

0.10 x = 54

x = 540

You need 540 gallons of 90% antifreeze solution.

7 0
3 years ago
Solve for x <br> 2x+16 X+16
nydimaria [60]

Answer:

2x(16)+16(16)

32x+256

32x/32=256/32

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3 0
3 years ago
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Given that events A and b are independent p(A) =0.60 and P(B)=0.30, what is P(A and B)?
myrzilka [38]
P(a)*p(b)=0.6*0.3=0.18
3 0
3 years ago
Can someone pls help me / alguien me puede ayudar
user100 [1]

Answer:

The simplified expression is:

\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8

Step-by-step explanation:

Given the expression

\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a

=\frac{2}{5}y+\frac{1}{5}x-0.2y-6-2

\mathrm{Group\:like\:terms}

=\frac{2}{5}y-0.2y+\frac{1}{5}x-6-2

Add similar elements

=0.2y+\frac{1}{5}x-6-2

=0.2y+\frac{x}{5}-6-2

=0.2y+\frac{x}{5}-8

=0.2y+0.2x-8

Thus, the simplified expression is:

\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8

6 0
3 years ago
A 4​-ft vertical post casts a 20​-in shadow at the same time a nearby cell phone tower casts a 115​-ft shadow. How tall is the c
Klio2033 [76]

Answer:

Step-by-step explanation4363 :

3 0
3 years ago
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