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Ostrovityanka [42]
3 years ago
15

Need help 21,22,23,24,25 pleasee help

Mathematics
1 answer:
zimovet [89]3 years ago
3 0

Answer:

21. C

22. D I got 263.89

23. I'm not sure about this one

24. C

25. D

Step-by-step explanation:

I hope the ones i answered were correct if not i am sorry

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Help please I need help
lukranit [14]
The answer is Radical 6.

This is because if you use Cosine and the angle measured 30. You would put adjacent over hypotenuse, which is
Cos (30) = X/radical 8

Put this into your calculator to get Radical 6
8 0
2 years ago
What's the domaing and range of this <br><br> (sorry for the quality, its the best I could get)
Schach [20]

Answer:

domain: [-3,2]

range: [-3,2]

Step-by-step explanation:

domain: all possible x values *maximum values of x

range: all possible y values *maximum values of x

brackets means the max while parenthesis mean infinite

8 0
3 years ago
The volume
Sedaia [141]
\bf \begin{array}{cccccclllll}&#10;\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\&#10;\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\&#10;y&=&{{ k}}&\cdot&x&#10;&&  y={{ k }}x&#10;\end{array}\\ \quad \\&#10;

and also

\bf \begin{array}{llllll}&#10;\textit{something}&&\textit{varies inversely to}&\textit{something else}\\ \quad \\&#10;\textit{something}&=&\cfrac{{{\textit{some value}}}}{}&\cfrac{}{\textit{something else}}\\ \quad \\&#10;y&=&\cfrac{{{\textit{k}}}}{}&\cfrac{}{x}&#10;&&y=\cfrac{{{  k}}}{x}&#10;\end{array}&#10;

now, we know that V varies directly to T and inversely to P simultaneously
thus\bf V=T\cdot \cfrac{k}{P}

so     \bf V=T\cdot \cfrac{k}{P}\qquad &#10;\begin{cases}&#10;V=42\\&#10;T=84\\&#10;P=8&#10;\end{cases}\implies 42=\cfrac{84k}{8}\implies 4=k&#10;\\\\\\&#10;V=\cfrac{4T}{P}\qquad now\quad &#10;\begin{cases}&#10;V=74\\&#10;P=10&#10;\end{cases}\implies 74=\cfrac{4T}{10}\implies 185=T
7 0
3 years ago
10 times as much as blank is 1/10 of 900
ludmilkaskok [199]

9 times 10 is 90.

90 is 1/10 of 900.

The answer is 9.

4 0
3 years ago
Seven fifths of a number, z, subtracted from 6 times the same number is 3 .
Alex_Xolod [135]
6z-7z/5=3

(30z-7z)/5=3

30z-7z=15

23z=15

z=15/23
8 0
3 years ago
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