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3 years ago

Please help i would really appreciate it.

Mathematics

2 answers:

vredina [299]3 years ago

8 0

(1,4) this is because the flip over y axis does not touch the y value but gives the opposite of the x value

zalisa [80]3 years ago

3 0

The third one maybe? Don’t blame me if it’s wrong

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The following figure is made of six semicircles with the same diameter, and of four congruent equilateral triangles represented

Oxana [17]

6 semicircles = 3 circles

The formula of the area of a equilateral triangle:

$A_\triangle=\dfrac{a^2\sqrt3}{4}$

We have a = |AE| = 3cm. Substitute:

$A_\triangle=\dfrac{3^2\sqrt3}{4}=\dfrac{9\sqrt3}{4}\ cm^2$

The formula of the area of a circle:

$A_O=\pi r^2$

We have 2r = |AE| =3cm → r = 1.5cm. Substitute:

$A_O=\pi\cdot1.5^2=2.25\pi\ cm^2$

The area of the figure:

$A=4A_\triangle+3A_O\\\\A=4\cdot\dfrac{9\sqrt3}{4}+3\cdot2.25\pi=9\sqrt3+6.75\pi=6\dfrac{3}{4}\pi+9\sqrt3\\\\=\dfrac{27}{4}\pi+\dfrac{36\sqrt3}{4}=\dfrac{9}{4}\cdot3\pi+\dfrac{9}{4}\cdot4\sqrt3=\dfrac{9}{4}(3\pi+4\sqrt3)\ cm^2$

7 0

3 years ago

Express your answer as a polynomial in standard form.

Natasha2012 [34]

Answer:

fog(x)= -4x+11

Step-by-step explanation:

Here,

f(x) = 2x - 3

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

fog(x)= f(-2x+7)

= 2(-2x+7)-3

= -4x+14-3

= -4x+11

4 0

3 years ago

Airline Fatalities One study showed that in a certain year, airline fatalities occur at the rate of 0.011 deaths per 100 million

Lelu [443]

Answer:

$P(X = 0) = 0.9891$

Step-by-step explanation:

Given

$\lambda = 0.011$

Required [This completes the question]

The probability of exactly 0 deaths

This probability follows a Poisson distribution, and it is given by:

$P(X = x) = \frac{e^{-\lambda}\lambda^{x}}{x!}$

For 0 deaths;

$x = 0$

So, the expression becomes

$P(X = 0) = \frac{e^{-\lambda}\lambda^{0}}{0!}$

$P(X = 0) = \frac{e^{-\lambda}\lambda^{0}}{1}$

$P(X = 0) = \frac{e^{-\lambda}*1}{1}$

$P(X = 0) = e^{-\lambda}$

Substitute 0.011 for $\lambda$

$P(X = 0) = e^{-0.011}$

$P(X = 0) = 0.9891$

<em>The probability of having exactly death is 0.9891</em>

8 0

3 years ago

Dividing by 1/4 makes a number

erica [24]

Answer:

1 divided by 4 is 0.25

Step-by-step explanation:

calculator....;p

3 0

3 years ago

Find the area of the parallelogram.<br>4 m<br>11 m

agasfer [191]

Answer:

The area of this parallelogram is $44meters^2$

Step-by-step explanation:

The formula for working out the area of a parallelogram is : $base*height$

To work out the area you would multiply the base of 11 by the height of 4, this gives you 44 meters squared. This is because a identical parallelogram and a rectangle would have the same area.

1) Multiply 11 by 4.

$11*4=44 meters^2$

4 0

3 years ago