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3 years ago

11

Convert 13 12 from radians to degrees.

1 answer:

sasho [114]3 years ago

3 0

Answer:

195°

Step-by-step explanation:

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Evaluate - x2 + y2 where x= -1 and y=3

o-na [289]

Answer:

8

Step-by-step explanation:

$-(-1)^2+(3)^2=-1+9\\=8$

3 0

3 years ago

Write the equation in standard form for the parabola with vertex (0,0) and directrix y=-6

Serggg [28]

This is a parabola which has vertex at the origin and opens upwards.

general form is x^2 = 4ay where a is the focus

the focus is the same distance from the vertex as the directrix So it is at the point (0, 6)

required equation is x^2 = 4*6 y

or y = (1/24) x^2

7 0

4 years ago

Which equation represents an exponential function that passes through the point (2, 36)?

sesenic [268]

Answer:

The exponential function that passes through (2,36) is:

$f(x)=4\times 3^x$ .

Step-by-step explanation:

We are asked to find which function passes through the point (2,36).

i.e. we will put the input value '2' in the following given functions and check which gives the output value as '36'.

1)

$f(x)=4\times 3^x$

now we put x=2.

$f(2)=4\times 3^2\\\\f(2)=4\times 9\\\\f(2)=36$

hence option 1 is correct.

2)

$f(x)=4\times x^3$

Now we put x=2.

$f(2)=4\times 2^3\\\\f(2)=4\times 8\\\\f(2)=32$

Hence, option 2 is incorrect.

3)

$f(x)=6\times 3^x$

Now we put x=2

$f(2)=6\times 3^2\\\\f(2)=6\times 9\\\\f(x)=54$

Hence, option 3 is incorrect.

4)

$f(x)=6\times x^3$

Now we put x=2.

$f(2)=6\times 2^3\\\\f(2)=6\times 8\\\\f(2)=48$

Hence, option 4 is incorrect.

Hence, option 1) is correct.

i.e. The exponential function that passes through (2,36) is:

$f(x)=4\times 3^x$

6 0

3 years ago

Read 2 more answers

which expression is equivalent to the expression shown? 3 to the power of 7 X 3 to the power os negative 4

grandymaker [24]

Answer:

The answer is 27

Step-by-step explanation:

I worked it out using a calculator

5 0

3 years ago

The center of a circle represented by the equation (x+9)^2 + (y-6)^2 =10^2 is what

inysia [295]

Answer:

A

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x + 9)² + (y - 6)² = 10² is in this form

with centre = (- 9, 6) → A

3 0

3 years ago