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AlekseyPX
3 years ago
9

Write the series using summation notation. −3+4−5+6−7

Mathematics
1 answer:
Genrish500 [490]3 years ago
8 0
-3+4=1 and 1 -5= -4, -4+6=2 AND 2-7=-5 Answer =-5
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The ratio of boys to girls in a sophomore class of 460 students is 11:12. find the number of boys.
lukranit [14]
11 : 12.....11 + 12 = 23

boys : 11/23 * 460 = 5060/23 = 220 <===
girls : 12/23 * 460 = 5520/23 = 240
7 0
3 years ago
1.The sum of two times a number and 8 is 10. What is the number?<br> A.1<br> B.2<br> C.18<br> D.9
Soloha48 [4]
Answer is Choice A - 1.
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4 0
3 years ago
PRECALCULUS please help​
sergejj [24]

Answer:

<h2>( f - g)(x)  =  \frac{2x -  \sqrt{x} + 14 }{3x}</h2>

Step-by-step explanation:

f(x) =  \frac{2x + 6}{3x}  \\  \\ g(x) =  \frac{ \sqrt{x}  - 8}{3x}

To find ( f - g)(x) , subtract g(x) from f(x)

That's

( f - g)(x) =  \frac{2x + 6}{3x}  -  \frac{ \sqrt{x}  - 8}{3x}

Since they have a common denominator that's 3x we can subtract them directly

That's

\frac{2x  +  6}{3x}  -  \frac{ \sqrt{x}  - 8}{3x}    =  \frac{2x  + 6 - ( \sqrt{x} - 8) }{3x}  \\  =  \frac{2x + 6 -  \sqrt{x} + 8 }{3x}  \\  =  \frac{2x -  \sqrt{x} + 6 + 8 }{3x}

We have the final answer as

<h3>( f - g)(x)  =  \frac{2x -  \sqrt{x} + 14 }{3x}</h3>

Hope this helps you

6 0
3 years ago
What is the area of the figure shown?
ExtremeBDS [4]

Step-by-step explanation:

3.5 \times 6 + (5 - 3.5) \times 6 \div 2 =  \\  = 21 + 9 \div 2 =  \\  = 25.5

6 0
3 years ago
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Kryger [21]
¿puede por favor hablar inglés
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