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SSSSS [86.1K]
3 years ago
6

What is the answer to number 23 ?

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Use πr²

netineya [11]3 years ago
4 0

155 degrees hope this is right for you

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An element with mass 290 grams decays by 13.2% per minute. How much of the
Tatiana [17]

Answer:

FV=PV(1−d)^n

FV = 290(1-.132)^14

FV = 290(.868)^14

FV = 39.96 g

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
How do you do this equation? 9x+(y)i-5=-12+4
Vaselesa [24]
9x+yi-5=-12+4\\\\(9x-5)+yi=-13\iff9x-5=-13\ and\ y=0\\\\9x=-13+5\\9x=-8\\x=-\frac{8}{9}\\\\Answer:x=-\frac{8}{9}\ and\ y=0.
3 0
3 years ago
Counting how many errors are in one chapter of a book is an example of measuring what kind of quality characteristics
AnnZ [28]

Answer: Attributes.

Step-by-step explanation:

An attribute is characterized as a person, position, or thing's quality or characteristic. Individuals in real life and fictional characters have different characteristics. Someone could be called attractive, charming, funny, or intelligent, for instance. Well, in math, an attribute is a characteristic of a math object - it's what this object has. An attribute of the book is the number of errors in a chapter of the book.

8 0
3 years ago
3xy + 5 if x = -4, y = 2
Zanzabum

Answer:

it will be -19

Step-by-step explanation:

i hope it helps you

7 0
3 years ago
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One pump can empty a pool in 4 days, whereas a second pump can empty the pool in 10 days. How long will it take the two pumps, w
gtnhenbr [62]

Answer:

20/7 days (just less than 3 days)

Step-by-step explanation:

Recall that (1 job) = (rate)(time), so time = (1 job) / (rate).

Set up and solve the following equation:

  1 job

------------------------------- = time required for 2 pumps working together

1 job         1 job

---------- + -------------

4 days      10 days

This comes out to:

              1 job

------------------------------------------- = time required

10 job-days      4 job-days

------------------ + -----------------

   40 days           40 days

or:

    1 job

-------------------- = (40/14) days, or 20/7 days (just less than 3 days)

14 job·days

-----------------

   40 days  

7 0
3 years ago
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