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2 years ago

5) mZ1 = mZx = 122 1 1 Hint: Must find angle 1 first.

Mathematics

1 answer:

gulaghasi [49]2 years ago

4 0

Angle 1 is 3x4 but u have to multiply the c before the z

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Solve the equation. (Find only the real solutions. Enter your answers as a comma-separated list.) x4 − 8x2 + 7 = 0

ryzh [129]

Answer: x=0 or x= plus or minus 2

Step-by-step explanation:

g(x)=x^4-8x^2+7

Critical numbers are the numbers where the first derivative is zero

g'(x)=4x^3-16x+0

=4x^3-16x

g'(x)=0

Implies

4x^3-16x=0

4x(x^2-4)=0

4x=0 OR x^2-4=0

x=0 or x^2=4

x=0 or x= plus or minus 2

5 0

3 years ago

Which is a reasonable estimate to the following problem 94 . 689

Novosadov [1.4K]

62,000 is reasonable (because of rounding)90*690=62,000

4 0

3 years ago

Graph y ≥ -x^2 +1 Click on the graph until the correct graph appears.

ser-zykov [4K]

Answer:

Here, I <u>graphed</u> it for you!

3 0

3 years ago

Help I will mark brainly

Schach [20]

Answer:

it is -25/18

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The lengths of nails produced in a factory are normally distributed with a mean of 3.34 centimeters and a standard deviation of

Shtirlitz [24]

Answer:

3.47 and 3.21

Step-by-step explanation:

Let us assume the nails length be X

$X \sim N(3.34,0.07^2)$

Value let separated the top 3% is T and for bottom it would be B

$P(X < T)= 0.97$

Now converting, we get

$P(Z < \frac{T-3.34}{0.07})= 0.97$

Based on the normal standard tables, we get

$P(Z < 1.881)= 0.97$

Now compare these two above equations

$\frac{T-3.34}{0.07} = 1.881 \\\\ T = 1.881 \times 0.07 + 3.34 \\\\ = 3.47$

So for top 3% it is 3.47

Now for bottom we applied the same method as shown above

$P(Z < \frac{B-3.34}{0.07})= 0.03$

Based on the normal standard tables, we get

$P(Z < -1.881)= 0.03$

Now compare these two above equations

$\frac{B-3.34}{0.07} = -1.881$

$= -1.881 \times 0.07 + 3.34 \\\\ = 3.21$

hence, for bottom it would be 3.21

7 0

3 years ago