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bazaltina [42]
3 years ago
10

Find the missing side round to the nearest tenth.

Mathematics
1 answer:
garik1379 [7]3 years ago
8 0

Answer:

X is 12.58 which rounds to 12.6

Step-by-step explanation:

Kono Dio Da!!

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If the perimeter of a rectangle is 124cm & the width is 35cm, what is the length?
-BARSIC- [3]

Answer:

l=27

b=2×35=70

2l=124-70=54

l=54/2=27

6 0
2 years ago
Which could be the measures of the three angles of an acute triangle.
slavikrds [6]
D
An acute angle is less than 90 degrees 
5 0
3 years ago
Read 2 more answers
11. Calvin walks 5 km south, then turns and walks 8 km east. Find his distance and displacement. Explain your answer.
Alecsey [184]

Answer:

Step-by-step explanation: the thing is that if kelvin walks 5km south and then 8 km east the displacement is that he won’t really make it to the east.

5 0
3 years ago
PLEASE HELP DUE ON THURSDAY
valentinak56 [21]

Answer:

  1. 615.8 m^2
  2. 314.2 cm^2
  3. 38.5 ft^2
  4. 113.1 in^2
  5. 1075.2 m^2 . . . . corrected to 107,521.0 m^2
  6. 490.9 yd^2
  7. 18.8 m
  8. 94.2 in
  9. 81.7 ft
  10. 59.7 km
  11. 131.9 cm
  12. 144.5 yd

Step-by-step explanation:

The formula for the area of a circle is ...

   A = πr^2

For each of the given circles, use the value of the radius in this formula. For example, for problem 2, the diameter is shown as 20 cm, so the radius is half that, 10 cm. Putting that value into the formula gives ...

  A = 3.14159·(10 cm)^2 = 314.159 cm^2 ≈ 314.2 cm^2

___

The formula for the circumference of a circle is ...

  C = 2πr . . . . when the radius is given

or ...

  C = πd . . . . . when the diameter is given

As above, put the value for radius (or diameter) into the appropriate formula and evaluate it. For problem 12, that is ...

  C = 3.14159·(46 yd) = 144.513 yd ≈ 144.5 yd

_____

<em>Comment on doing lots of problems</em>

The idea behind having you do lots of problems is that repetition will help you remember the formula and/or how to use it. Personally, I find it tedious, so I like to let a spreadsheet or graphing calculator do the arithmetic when there are lots of identical problems (just with different numbers). This question is posted in the college math forum, so we assume you have a graphing calculator and know how to use it.

The attached photo shows a calculator set up to do the calculation and the rounding for each of the problem types. To get the answer to the last area calculation requires scrolling to the right to find it is 490.9 yd^2.

Note that we have used the calculator's button for π. If you put the number in yourself, use the one shown above, or the ratio 355/113, which is accurate to 7 digits.

In some cases, the numbers in the photo are not terribly clear. I took my best guess. In the event I read the value or units incorrectly, you will have to make appropriate adjustments—that is, do the calculation yourself.

_____

Late edit: apparently I read the number wrong for problem 5. The area of a circle with radius 185 m is 107,521.0086 m^2, which rounds to 107,521.0 m^2. Oops.

3 0
3 years ago
Does this table represent a proportional relationship? If so, what is the constant of proportionality? Explain
klio [65]

Answer:

no it doesn't because if the number in the first column increase then the number in the second column shouldn't be decreasing also the constant between 85 and 5 was 17 but the constant between 10 and 79 wasn't the same

6 0
2 years ago
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