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Alexandra [31]
3 years ago
6

What is the rational number between -2/3 and -5/6

Mathematics
1 answer:
hoa [83]3 years ago
7 0
Looks tuffff ^|^|~*~\^]+|*~
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Which function will have a y-intercept at –1 and an amplitude of 2?
Angelina_Jolie [31]

Answer:

Options B and D.

Step-by-step explanation:

The general form of sine function

h(x)=A\sin (Bx+C)+D

where, |A| is amplitude, \frac{2\pi}{B} is period, \frac{-C}{B} is phase shift and D is y-intercept.

The general form of cosine function

h(x)=A\cos (Bx+C)+D

where, |A| is amplitude, \frac{2\pi}{B} is period, \frac{-C}{B} is phase shift and D is y-intercept.

In function, f(x)=-\sin x-1

Amplitude : |A|=1

y-intercept : -1

In function, f(x)=-2\sin x-1

Amplitude : |A|=2

y-intercept : -1

In function, f(x)=-\cos x

Amplitude : |A|=1

y-intercept : 0

In function, f(x)=-2\cos x-1

Amplitude : |A|=2

y-intercept : -1

Therefore, the correct options are B and D.

4 0
3 years ago
Read 2 more answers
Find an equation of the circle that satisfies the given conditions. (Give your answer in terms of x and y.)
masya89 [10]

Answer:

(x-4)^2+(y+5)^2=90

Step-by-step explanation:

The equation of a circle of radius r, centered at the point (a,b) is

(x-a)^2+(y-b)^2=r^2

We already know the center is at (4,-5), we are just missing the radius. To find the radius, we can use the fact that the circle passes through the point (7,4), and so the radius is just the distance from the center to this point (see attached image). So we find the distance by using distance formula between the points (7,4) and (4,-5):

radius=\sqrt{(7-4)^2+(4-(-5))^2}=\sqrt{3^2+9^2}=\sqrt{90}

And now that we know the radius, we can write the equation of the circle:

(x-4)^2+(y-(-5))^2=\sqrt{90}^2

(x-4)^2+(y+5)^2=90

5 0
3 years ago
Cristina puede mecanografiar un ensayo de 50 páginas en 8h. Si el mes pasado Cristina y Ángela juntas mecanografiaron un ensayo
ehidna [41]

Cristina can type a 50 page essay in 8h. Yes, last month Cristina and Angela together typed an essay of the same size in 6 hours. How long would it take Angela to make it sun

Translated

5 0
2 years ago
Help me on this question
sleet_krkn [62]

Answer:

F.2:30 a.m.

8 revolutions= 8×90=720mn= 12h

So the sign starts from 2.30p.m.

Then the sign after 8 revolutions is 2.30 a.m.

Please give Brainliest

8 0
2 years ago
Sheryl's boss at always 21 pays a 5% commission on all sales. If Sheryl sells $140 worth of clothes, how much commission does sh
mariarad [96]

Answer:

She earns $7.

Step-by-step explanation:

5 percent of 140 is 7. You can think of this as taking ten percent of 140.0 by moving the decimal point one place to the left, 14, and then since 10 divided by 2 is 5, divide that by 2 and you get 7.

4 0
2 years ago
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