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belka [17]
3 years ago
12

(01.01 LC) What is the rational number equivalent to 1.28?(1 point)

Mathematics
1 answer:
katrin [286]3 years ago
6 0

Answer:

  32/25

Step-by-step explanation:

Any finite-length, or repeating, decimal number is a rational number. Perhaps you want the number expressed as the ratio of two integers.

__

You can start by recognizing that the value of the number is one hundred twenty-eight hundredths, or 128/100.

This improper fraction can be reduced by removing a factor of 4 from numerator and denominator:

  128/100 = 32/25

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How to do this question
blsea [12.9K]
This is a 3 step problem. First you ignore the hole in the middle and find the volume anyways. Then you find the volume of the empty middle part. Then you can find the volume of the actual shape by subtracting them. 
area of a circle is= pi r^2
Volume with hole: 5*5*pi*8=200pi
Volume of hole= 1.5*1.5*pi*8= 18pi
Volume of doughnut = 200pi-18pi=182pi=571.769863u^3

r is the radius which is half of the diameter. 
pi is a big number but you can use 3.14
the formula for finding the volume is area of base times height. That's why i multiplied it by 8.]

I hope this helps
8 0
3 years ago
All real square roots of 0.0009
kompoz [17]
 the real square root of 0.0009 is 0.03
6 0
3 years ago
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Figure RHOM is a rhombus. and are the diagonals of the rhombus, as well as angle bisectors of the vertex angles, and they create
Ganezh [65]

Answer:

∠MSR is right angle


Step-by-step explanation:

It is given that RHOM is a Rhombus

Also ΔHOM, ΔMHR, ΔRHO and ΔOMR are isosceles triangles

Let us take ΔMSR and ΔRSH

∠MRS =∠HRS            ( since it is given that the diagonal RO bisects ∠R)

∠RMS =∠RHS     ( since Δ MRH is isosceles triangle )

RS = RS        ( common side )

By AAS congruency rule ΔMSR ≅ ΔHSR

so we have

∠MSR=∠RSH  ( corresponding parts of congruent triangles are congruent)

also we have

∠MSR +∠RSH =180°   ( supplementary angles)

∠MSR +∠MSR=180°          ( since ∠MSR=∠RSH)

2∠MSR= 180°

∠MSR =90°

Hence ∠MSR is right angle


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3 years ago
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Possible facing a jury and being healed in jail, hiring a layer and going to court
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A line has a slope of -5/3 through which two points could this line pass?
lyudmila [28]
The answer would be D. (11,14),(8,18)

To find the answer you need to find an equal slope.

To find the slope you need to do y2-y1/x2-x1

Y2 is 18, y1 is 13, x2 is 8, and x1 is 11

18-13/8-11
5/-3=
-5/3
8 0
3 years ago
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