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lara [203]
3 years ago
14

Me need help on this help me plz

Mathematics
2 answers:
Ilia_Sergeevich [38]3 years ago
4 0

Answer:

circumference = πd

π = 3.14

3.14 x 20 = 62.8

62.8 inches

Zepler [3.9K]3 years ago
4 0

Answer:

62.8inches

Step-by-step explanation:

Circumference of the bicycle wheel C= πd

d is the diameter of the bicycle = 20inches

Circumference = 3.14(20)

Circumference = 62.8inches

Hence the circumference of the wheel is 62.8inches

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Im struggling a bit can someone help me? Must show all work.
mart [117]
For this, it's like finding a partial volume. Altogether, there will be 10 inches of sand, because 4+6 is 10. Because it is in inches, we have to convert it to feet. 10 inches in feet is 10/12 feet, or about .833. This is then used for the volume formula instead of the 1 foot height. So, the equation is 6 times 4 times 10/12. This comes out to be 20. 
Hope this helps :)
6 0
3 years ago
Solve the system of equations by substitution. 3/8 x + 1/3 y =17/24 and <br> x + 7y = 8
goblinko [34]
\left \{ {{ \frac{3}{8}x+ \frac{1}{3}y  = \frac{17}{14} } \atop {x+7y=8}} \right.

To solve this system by substitution, first isolate x in the second equation.

x+7y=8
x+7y-7y=8-7y
x=8-7y

Now, plug this expression (8-7y) for x in the top equation to solve for y.

\frac{3}{8} (8-7y)+ \frac{1}{3} y= \frac{17}{14}
3- \frac{21}{8} y+ \frac{1}{3} y= \frac{17}{24}
72-63y+8y=17
72-55y=17
-55y=17-72
-55y=-55
y=1

Now that you have y, plug it into the second equation and solve for x.

x+7y=8
x+7(1)=8
x+7=8
x=1

Last step is to plug your x- and y-values in to both equations to check your work.

\frac{3}{8} (1)+ \frac{1}{3} y= \frac{17}{24}

\frac{3}{8} * \frac{3}{3} = \frac{9}{24} ;  \frac{1}{3} * \frac{8}{8} = \frac{8}{24}

\frac{9}{24} + \frac{8}{24} = \frac{17}{24}  <--True

1+7(1)=8
1+7=8   <--True

Answer:
x=1 \\ y=1
5 0
4 years ago
The question is down below
GaryK [48]

180 = x + x+2 + x+1

180=3x+3

177= 3x

x = 59

Angle A = 59 +2 = 61 degrees

7 0
3 years ago
Read 2 more answers
A hot air balloon is descending at 60m/min. How far does it descend in 25 minutes? Write the integer that describes the change.
Mars2501 [29]
-1500 miles :))))))))
7 0
3 years ago
Read 2 more answers
The lengths of plate glass parts are measured to the nearest 1/10 mm. The lengths are discretely and uniformly distributed with
vagabundo [1.1K]
For uniform, the mean is:

<span>x¯ = (<span>590.0+590.9) 2</span></span>
The variance is:<span>
σ = sqrt [ (<span><span>n2−1) /</span>12  ]

</span></span><span> Where n=10.

The answer would be 590.45


I hope my answer has come to your help. Have a nice day ahead and may God bless you always!</span>
8 0
3 years ago
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