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DIA [1.3K]
3 years ago
9

Triangle ABC is equilateral. Find the value of x.

Mathematics
1 answer:
AfilCa [17]3 years ago
7 0
Worked solution on photo

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Solve for z.<br> az - 17 = -4z-b
Bingel [31]

Answer:

z = (-b + 17)/(a+4)

Step-by-step explanation:

If in terms of a and b, then

az - 17 = -4z - b

z(a-4) = -b+17

z = (-b + 17)/(a+4)

8 0
3 years ago
What is the degree of (3x^2-3)(3x^2+3)
r-ruslan [8.4K]

Answer:

9x^4+3x^2 -6

Step-by-step explanation:

(3x^2-2)(3x^2+3)

expand to remove the bracket

9x^4 + 9x^2 -6x^2 - 6

9x^4 + 3x^2- 6

5 0
3 years ago
Wats the answer to the Lucy question
Serhud [2]
I am sorry I have no idea what are you talking about
5 0
3 years ago
Suppose your boss wants you to obtain a sample to estimate a population mean. Based on previous analyses, you estimate that 49 i
VashaNatasha [74]

Answer:

the minimum sample size n = 11.03

Step-by-step explanation:

Given that:

approximate value of the population standard deviation \sigma = 49

level of significance ∝ = 0.01

population mean = 38

the minimum sample size n = ?

The minimum sample size required can be determined by calculating the margin of error which can be re[resented by the equation ;

Margin of error = Z_{ \alpha /2}} \times \dfrac{\sigma}{\sqrt{n}}

38 = \dfrac{2.576 \times 49}{\sqrt{n}}

\sqrt{n} = \dfrac{2.576 \times 49}{38}

\sqrt{n} = \dfrac{126.224}{38}

\sqrt{n} = 3.321684211

n= (3.321684211)^2

n ≅ 11.03

Thus; the minimum sample size n = 11.03

5 0
3 years ago
At the store, Sam bought 4 hats for $65. What is the cost of 1 hat?
kupik [55]

Answer:

$16.25

Step-by-step explanation:

4 hats cost $65

1 hat cost 65/4=16,25

3 0
2 years ago
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