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Inessa05 [86]
3 years ago
7

If you know the radius of a circle but not the diameter how would you find the circumference

Mathematics
1 answer:
umka2103 [35]3 years ago
4 0
The diameter is just double the radius. You are doing d*pi, which can be rewritten as 2r*pi. Basically, if you have the radius, just double it and then you have the diameter.
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Plz help me with this
Nana76 [90]
This question is not even trying to test your arithmetic.  It's just testing
to see whether you know how to read numbers in words properly.

When you read numbers in words, the only time you ever say "and"
is for a decimal point.  There are no decimals in this question, so the
"and" is not a part of any numbers.

The question gives you two numbers. The word "and" is the marker
that's BETWEEN them.  The two numbers are 1,300 and 950 .

The first thing the question wants you to do is write the numerical
expression for all the words.  That's    (1300 - 950) / 4 .

The next thing you're supposed to do is"evaluate the expression" ...
find out what number it all boils down to.  I don't think you'll have
any trouble with that now.
3 0
3 years ago
What is (7-3b)(7+3b)
lidiya [134]
The answer i got was 49-9b^2
8 0
3 years ago
Describe the steps that you would use to generate an expression equivalent to 8.1b+6.7a+2.5+7+.9a-2.8b
bija089 [108]

Explanation:

1. Identify the different constellations of variables. Here there are three:

  • b
  • a
  • (none)

2. Combine coefficients of each of the different variable constellations:

  (8.1 -2.8)b +(6.7 +0.9)a +(2.5 +7)

  5.3b +7.8a +9.5

3. Perform any other operations that might be required depending on the sort of equivalent wanted. For example, one could write ...

  5.3(b +(78/53)a) +9.5 . . . . . . . shows the weight of a relative to b

6 0
3 years ago
5p + 8 = 7p + 2 (Finding Common Denominators)
steposvetlana [31]
<span>Simplifying 7p + 2 = 5p + 8 Reorder the terms: 2 + 7p = 5p + 8 Reorder the terms: 2 + 7p = 8 + 5p Solving 2 + 7p = 8 + 5p Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-5p' to each side of the equation. 2 + 7p + -5p = 8 + 5p + -5p</span>
8 0
3 years ago
Read 2 more answers
35.6 = the square root of 15.3^2 + the square root of x^2. Find x.​
vivado [14]

Answer:

x = 50.9

Step-by-step explanation:

35.6 = √(15.3²) + √(x²)

35.6 = 15.3 + x

x = 35.6 + 15.3

x = 50.9

5 0
3 years ago
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