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nikklg [1K]
3 years ago
6

If the sum of a term of an ap is 2n square + 5n then find the 4th term​

Mathematics
2 answers:
zlopas [31]3 years ago
7 0

Answer:

19

Step-by-step explanation

Let the sum of n terms of A.P. = Sn

Vesna [10]3 years ago
5 0
The fourth term is 19 !!!!!!!
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The local swim team is considering offering a new semi-private class aimed at entry-level swimmers, but needs a minimum number o
SCORPION-xisa [38]

Answer:

The significance level is \alpha=0.01 and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:

z_{\alpha/2}= 2.326

So we reject the null hypothesis is z>2.326

Step-by-step explanation:

For this case we define the random variable X as the number of entry-level swimmers and we are interested about the true population mean for this variable . On specific we want to test this:

Null hypothesis: \mu \leq 15

Alternative hypothesis: \mu > 15

And the statistic is given by:

z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

The significance level is \alpha=0.01 and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:

z_{\alpha/2}= 2.326

So we reject the null hypothesis is z>2.326

7 0
3 years ago
cell company 1 charges $350 for a phone and a monthy bill of $87.50 . cell company 2 charges $200 for a phone and a monthly bill
Anettt [7]
The answer is more than thirty
6 0
3 years ago
HELPPPPPP ILL GIVE POINTS AND MARK YOU BRAINLIEST
Reil [10]

Answer:

x = 9

FGH = 5x-3 = 42°

HGI = FGH = 42°

FGI = 42+42= 84°

Step-by-step explanation:

5x - 3 = 6x - 11

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6 0
3 years ago
If m(x) = x3 and n(x) = √ 6 + x , find the function value, if possible.
charle [14.2K]

Answer:

The correct answer is option D.  -126  

Step-by-step explanation:

<u>Points to remember</u>

<u>Composite functions</u>

f(x) and g(x) be the functions then,

(f - g)(x) = f(x) - g(x)

<u>To find the value of (m - n)(-5)</u>

Let  m(x) = x³ and n(x) = √ (6 + x)

(m - n)(x) = m(x) - n(x)

 =  x³ - √( 6 + x)

(m - n)(-5) = m(-5) - n(-5)

 =  x³ - √( 6 + x)

 =  (-5)³ - √( 6 + -5)

 = -125 -  √1

 = -125 -1

 = -126

The correct answer is option D.  -126

3 0
3 years ago
Sketch he graph of:<br><img src="https://tex.z-dn.net/?f=y%20%3D%202x%20-%204" id="TexFormula1" title="y = 2x - 4" alt="y = 2x -
Andreas93 [3]

Answer:

(Hope this helps can I pls have brainlist (crown) ☺️)

Step-by-step explanation:

In pic

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3 years ago
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