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4 years ago

Plz help and explain :)))

Mathematics

2 answers:

Arte-miy333 [17]4 years ago

8 0

Hello there!

See picture below...

Let me know if you have more questions about the answer :)

As always, it is my pleasure to help students like you!

guapka [62]4 years ago

6 0

Solve
$z^2-16z=-9$

Transpose -9 to the left to end up with the standard form of the quadratic equation:
$z^2-16z+9=0$
Since it does not appear to have rational roots, we proceed with the quadratic formula, where a=1, b=-16, c=9
and substitute in the quadratic formula:
$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$
$=\frac{16\pm\sqrt{(-16)^2-4*1*9}}{2}$
$=\frac{16\pm\sqrt{256-36}}{2}$
$=8\pm\sqrt{55}$
i.e.
z=8+sqrt(55) or 8-sqrt(55)

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Bingel [31]

There’s 10 vases. Each one needs 3 roses and 8 carnations. So 3(10) is how many roses and 8(10) is how many carnations. The equation is 10(3x+8y) x being roses and y being carnations.

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3 years ago

The probabilities that a batch of 4 computers will contain 0, 1, 2, 3, and 4 defective computers are 0.4521, 0.3970, 0.1307, 0.0

kicyunya [14]

Answer:

The standard deviation of given probability distribution is 0.767.

Step-by-step explanation:

We are given the following information in the question:

X: 0 1 2 3 4

P(x): 0.4521 0.3970 0.1307 0.0191 0.0010

Formula:

$\text{Mean} = \sum X.P(x)\\= 0(0.4521) + 1(0.3970) + 2(0.1307) + 3(0.0191) + 4(0.0010)\\= 0.7197$

$\mu = 0.7197$

Formula:

$\text{Variance} = \sum (X-\mu)^2E(x)\\= (0-0.7197)^2(0.4521)+(1-0.7197)^2(0.3970)+(2-0.7197)^2(0.1307)+(3-0.7197)^2(0.0191)+(4-0.7197)^2(0.0010) \\=0.587$

$\text{Standard Deviation} = \sqrt{\text{Variance}}\\= \sqrt{0.587} = 0.767$

The standard deviation of given probability distribution is 0.767.

3 0

4 years ago

What is the slope of the line that passes through the points (−8,−1) and (−6,−2)? Write your answer in simplest form.

4vir4ik [10]

Answer:

m = -1/2

Step-by-step explanation:

Recall that slope = (change in y) / (change in x).

Going from (−8,−1) to (−6,−2), x increases by 2 (because -6 - (-8) = 2), and

y decreases by 1. Thus, the slope here is

m = (change in y) / (change in x) = (-1) / 2 = -1 / 2

m = -1/2

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3 years ago

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max2010maxim [7]

You would need to know how many centimeters the base of the fountain on the blueprint is first. It seems like you are missing some information on this problem.

I'll give you an example anyways.
Let's say the base on the blueprint is 36 centimeters.
1 cm= approximately 0.03 feet
0.03* 36= about 1.08 feet.

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3 years ago

at 111111:55\text{ p.m.}55 p.m.55, start text, space, p, point, m, point, end text, thomas ties a weight to the minute hand of a

Ahat [919]

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<h3>What is torque ?</h3>

Torque, which is also known as the moment of a force, is the propensity of a force to rotate the body to which it is applied. Force (F) x Distance (r) = Torque is how torque is calculated. The distance (r) between the pivot point and the force's action point. A vector quantity is a torque. As a vector quantity, torque always has a direction that is perpendicular to the plane that contains the vectors of force and displacement.

To learn more about Torque, visit

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2 years ago