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ivann1987 [24]
3 years ago
5

Help plz..And No links!! I repeat No links!!

Mathematics
1 answer:
Brums [2.3K]3 years ago
7 0

Step-by-step explanation:

Apply foil method.

First,

4z \times z = 4 {z}^{2}

Outer,

z \times  - 1 =  - z

Inner,

4z \times 1 = 4z

Last,

1 \times  - 1 =  - 1

Add terms.

4 {z }^{2}  + 3z - 1

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Which of the following represents the difference between the central angles of the above regular polygons? Round to the nearest
solong [7]

Answer:

its 15.43

Step-by-step explanation:

you didnt put a picture for the polygons but im pretty sure this is from math nation.

6 0
3 years ago
UNIT 8
DochEvi [55]

For the first figure the Circumference of the circle is: 5.3\ip\pi cm.

For the second figure the Circumference of the circle is: 80\ip\pi inch.

<h3>What is Circumference of the Circle?</h3>

The circumference of a circle is defined as the linear distance around it.

i.e.,  C= 2 *\pi*r

  • For First Figure,

Circumference of the circle:

= 2 *\pi*r

= 2 *\pi* \frac{5.3}{2}

= 2 *\pi*2.65

Circumference= 5.3*\pi cm

  • For the second Figure,

Circumference = 2 *\pi*r

= 2 *\pi*40

 = 80 *\pi

Circumference =80\pi \;inch

For the first figure the Circumference of the circle is: 5.3\ip\pi cm.

For the second figure the Circumference of the circle is: 80\ip\pi inch.

Learn more about circumference of circle here:

brainly.com/question/23239017

#SPJ1

4 0
3 years ago
The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation of 2 ounces.
Wittaler [7]

<span>First we calculate z using the formula:

z = (x - μ)/σ</span>

Where:

x = our variable, 10

μ = mean, 8

σ = standard dev, 2

Substituting known values:<span>
z = (10 - 8)/2
z = 2/2
z = 1

Using the tables of the normal distribution to find the p-value with z = 1

p = 0.8413

Since we want "greater than 10”, we need to subtract the probability from 1 therefore

p* = 1 - 0.8413 = <span>0.1587</span></span>

6 0
3 years ago
Innea's company's revenue in 201720172017 is \dfrac{36}{25} 25 36 ​ start fraction, 36, divided by, 25, end fraction of its reve
cricket20 [7]

Answer:

144%

Step-by-step explanation:

Complete question below:

Linnea's company's revenue in 2017 is 36/25 of its revenue in 2016. What is Linnea's company's revenue in 2017 as a percent of its revenue in 2016?

Solution

Let

36x= Linnea's company revenue in 2017

25x=Linnea's company revenue in 2016

Percent of Linnea's company's revenue in 2017 as a percent of its revenue in 2016= 36x / 25x × 100

36x / 25x * 100

=1.44 × 100

=144%

6 0
3 years ago
El producto de 4 y un numero, aumentado en 17 es 221. Cual es el numero?
Helga [31]
La equacion seria 4n+17=221
221-17=204
4n=204   204/4=51
n=51
3 0
4 years ago
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