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sergeinik [125]
3 years ago
7

I need help finding this missing angle

Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

THE ANSWER OF X DGREE MAY BE 95 DEGREE USING THE PROPERTY OF VERTICALLY OPPOSITE ANGLE...

You might be interested in
How many rational numbers are between -2 and 5?
Butoxors [25]
The answer is 7 because 2 to 5 is 3 and -2 to 5 I 7
4 0
3 years ago
The Internal Revenue Service (IRS) provides a toll-free help line for taxpayers to call in and get answers to questions as they
sukhopar [10]

Answer:

From the result of the one-tailed z-test, we can conclude that the mean waiting time is not significantly less than the the 15 minute claim by the taxpayer advocate.

Step-by-step explanation:

Sample size = 50

Mean waiting time = 13 minutes

Standard deviation = 11 minutes

We need to perform one hypothesis test that the actual mean waiting time turned out to be significantly less than the 15-minute claim made by the taxpayer advocate.

The null hypothesis would be that there is no significant difference.

H₀: μ₀ = 15 minutes

The alternative hypothesis would be that the mean waiting time is indeed significantly less than the 15-minute claim by the taxpayer advocate.

Hₐ: μ₀ < 15 minutes.

This is evidently a one tail hypothesis test (we're investigating only in one direction; less than the claim). Hence, we can use the z-test

z = (x - μ)/σₓ

σₓ = (σ/√n) = (11/√50) = 1.556

z = (13 - 15)/1.556 = - 1.29

Using the z-table at significance level of 0.05.

p-value = 1 - 0.9115 (from the z-tables)

p-value = 0.0885

Since the p-value is more than the significance level (0.0885 > 0.05), we do not reject the null hypothesis.

Hence, we accept the null hypothesis and can conclude that the mean waiting time is not significantly less than the the 15 minute claim by the taxpayer advocate.

Hope this Helps!!!

4 0
3 years ago
Which number line shows the solution to the inequality -3x -5 &lt; -2
Eva8 [605]

Answer:

x > -1

See picture.

Step-by-step explanation:

-3x-5

Hope this helps.

7 0
3 years ago
Integration: How would I get to this answer?
Scrat [10]
Given that y attains a maximum at x=1, it follows that y'=0 at that same point. So integrating once gives

\displaystyle\int\frac{\mathrm d^2y}{\mathrm dx^2}\,\mathrm dx=\int-8x\,\mathrm dx
\dfrac{\mathrm dy}{\mathrm dx}=-4x^2+C_1
\implies -4(1)^2+C_1=0\implies C_1=4

and so the first derivative is y'=-4x^2+4.

Integrating again, you get

\displaystyle\int\frac{\mathrm dy}{\mathrm dx}\,\mathrm dx=\int(-4x^2+4)\,\mathrm dx
y=-\dfrac43x^3+4x+C_2

You know that this curve passes through the point (2, -1), which means when x=2, you have y=-1:

-1=-\dfrac43(2)^3+4(2)+C_2
\implies C_2=\dfrac53

and so

y=-\dfrac43x^3+4x+\dfrac53
7 0
3 years ago
The surface area of the square pyramid shown is 84 square inches. What is the value of $x$ ? Square pyramid with base edge of 6
AysviL [449]

Answer:

4 inches

Step-by-step explanation:

The surface area, A of a right square pyramid is given by :

A = a² + 2as

Where, s = height of each triangular surface = x

a = base edge of pyramid

Substituting values into the equation :

A = 84 in² ; a = 6 in ; Slant height, s = x

84 = 6² + 2(6 * x)

84 = 36 + 2(6x)

84 = 36 + 12x

84 - 36 = 12x

48 = 12x

48/12 = 12x / 12

4 = x

Hence, Slant height, x = 4 inches

7 0
3 years ago
Read 2 more answers
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