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ira [324]
3 years ago
8

Help rn please!! Urgent

Mathematics
1 answer:
Aleks04 [339]3 years ago
8 0

Answer:

<em>x² + 2x - 15 = 0 </em>

Step-by-step explanation:

- 5 and 3 are zeros of quadratic function.

(x + 5)(x - 3) = 0

<em>x² + 2x - 15 = 0</em>

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What is the value of this expression? (−4)^4?
Charra [1.4K]
-4^4= -4*-4*-4*-4

-4*-4=16
16*-4=-64
-64*-4= 256

Final answer: 256
5 0
3 years ago
Is this right ? Plz help mee
sasho [114]
6.32 is the final answer! :)
6 0
3 years ago
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Which of the following points lies on the graph of the function y = 8x?
nignag [31]
Y = 8^x
For (0, 1): 1 ≠ 8^0 = 1
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Therefore, option 3, (2, 64) is the correct answer.
8 0
3 years ago
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What is the sum of the arithmetic sequence 8, 15, 22 …, if there are 26 terms?
11111nata11111 [884]
Since the sequence is arithmetic, we have an expression of the form:
 an = a1 + d (n-1)&#10;
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 d: common difference
 n: number of terms
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 d = 22-15 = 15-8 = 7&#10;&#10;d = 7
 Then, setting values we have:
 a26 = 8 + 7 * (26-1)&#10;&#10;a26 = 183&#10;
 Then, the sum of the terms is:
 Sn = ((a1 + an) / (2)) * n&#10;
 Substituting values:
 Sn = ((8 + 183) / (2)) * 26&#10;&#10;Sn = 2483
 Answer:
 
the sum of the arithmetic sequence 8, 15, 22 is:
 
Sn = 2483
5 0
3 years ago
น. <br><img src="https://tex.z-dn.net/?f=x%20%3D%201%20-%20%20%5Csqrt%7B2%7D%20find%20%20%5C%3A%28x%20-%20%20%5Cfrac%7B1%7D%7Bx%
Nastasia [14]

Answer:

Step-by-step explanation:

\frac{1}{x}=\frac{1}{1-\sqrt{2}}\\\\=\frac{1*(1+\sqrt{2})}{(1-\sqrt{2})(1+\sqrt{2})}\\\\=\frac{1+\sqrt{2}}{1^{2}-(\sqrt{2})}\\\\=\frac{1+\sqrt{2}}{1-2}\\\\=\frac{1+\sqrt{2}}{-1}\\\\= -[1+\sqrt{2}]\\\\x-\frac{1}{x}=1-\sqrt{2}-(-[1+\sqrt{2}])\\\\=1-\sqrt{2}+1+\sqrt{2}\\\\=2

8 0
3 years ago
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