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artcher [175]
3 years ago
12

Can someone help me with these questions?

Mathematics
1 answer:
Elina [12.6K]3 years ago
4 0
1) 1, -2..for the first question
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22. f(x) is stretched horizontally by a factor of 2 and reflected across the x-axis. Which choice shows the correct representati
goblinko [34]

Answer:

A. -f(1/2 x)

Step-by-step explanation:

Reflextion about the x-axis is

f(x) -> -f(x)

and horizontal dilation is

f(x) -> f(-x/b) where b is the factor of dilation.

so the proper answwer is

A. -f(1/2 x)

6 0
3 years ago
Need help asap for geometry​
kupik [55]

Answer:

35

Step-by-step explanation:

40=1/2(115-x)

80=115-x

-35=-x

x=35

4 0
3 years ago
Read 2 more answers
Drag and drop the symbols to enter the equation of the circle in standard form with center and radius given. Center (-8, -3), ra
lord [1]
The standard equation of a circle is given by:
(x-a)²+(y-b)²=r²
where:
(a,b) is the center and r is the radius.
Given that (a,b) is (-8,-3) and r=2 units
then the equation of the circle will be:
(x-(-8))²+(y-(-3))²=2²
simplifying the above we get:
(x+8)²+(y+3)²=4
5 0
3 years ago
What expression is equivalent to 3 to the 5th power?
netineya [11]

Answer:

3^{5}

Step-by-step explanation:

3 0
3 years ago
A) In 2000, the population of a country was approximately 5.82 million and by 2040 it is projected to grow to 9 million. Use the
mezya [45]

Answer:

By 2086

Step-by-step explanation:

The provided equation is:

A=A0*e^{k*t} , where:

A=total of population after t years

A0=initial population

k= rate of growth

t= time in years

Given information:

The final population will be 15 million, then A=15.

We start in 2000 with a 5.82 million population, then A0=5.82.

Missing information:

Although k is not given, we can calculate k by using the following statement, from 2000 to 2040 (within 40 years) population is proyected to grow to 9 million, which means a passage from 5.8 to 9 million (3.2 million increament).

Then we can use the same expression to calculate k:

A=A0*e^{k*t}

9=5.8*e^{40*k}

ln(9/5.8)/40=k

0.010984166494596147=k

0.011=k

Now that we have k=0.011, we can find the time (t) by which population will be 15 million:

A=A0*e^{k*t}

15=5.8*e^{0.011t}

ln(15/5.8)/0.011=t

86.38111668634878=t

86.38=t

Because the starting year is 2000, and we need 86.38 years for increasing the population from 5.8 to 15 million, then by 2086 the population will be 15 million.

4 0
3 years ago
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