The period of 3cosx/5 is..???

Answers

Answer 1

Answer: $the\ period\ of\ cosx\ is\ 2\pi\n\nthe\ period\ of\ 3cosx\ is\ 2\pi\n\nthe\ period\ of\ 3cos(x)/(5)\ is\ 5\cdot2\pi=10\pi$

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The scatter plot shows a hiker's elevation above sea level during a hike from the base to the top of a mountain. The equation of a trend line for the hiker's elevation is y equals=9.069.06xplus+651651, where x represents the number of minutes and y represents the hiker's elevation in feet. Use the equation of the trend line to estimate the hiker's elevation after 175 minutes.
What is 25 squared divided by five to the fourth power equal to
What expression is not equivalent to 1/343 A. 7-1 x 7-2 B.77 x 7-10 C. 7-2 x 7-5 D. 7-5 x 72 (All expressions have an Integer either negative or positive u just can't type it correctly here and B and D or not 77 or 72 it's 7 and positive 7 and D is 7 positive 2

Help me, need answer ASAP

Answers

b is maybe the answer not really sure

The height of a balloon is given by the fucntion s(t)= -960t^2+26400t , where t= hours since lift-off and s= feet . Find the velocity of the balloon 5 hours after lift off

Answers

v is slope of graph s-t
v(t) = s'(t) = -1920t + 26400
v(5) = -1920(5) + 26400

16800 metres

Working
i) Differentiate the given function to get the velocity function:
ds/dt = =1920t+ 26400
Then replace the value of t with 5 hours
v(t)= -1920(5)+26500
v(t)= -9600+26500
V(5)= 16800 m

How is the process of finding equivalent ratios like the process of finding equivalent fractions?

Answers

It's generally the same, because each ratio can be written as a fraction and each fraction can be written as a ratio. For example:

1 : 2 = 1/2
5 : 7 = 5/7
3.5 : 4.3 = 3.5/4.3 = 35/43
etc.

Finding equivalent ratios is just multiplying or dividing both sides by the same number. Finding equivalent fractions is multiplying or dividing both numerator and denominator by the same number, so it's the same. For example:

1 : 2 = 2 : 4
1/2 = 2/4

5 : 7 = 10 : 14
5/7 = 10/14

3.5 : 4.3 = 7 : 8.6
35/43 = 70/86

etc.

How do you simplify the fraction 252 over 288?

Answers

GCF = 36

We can reduce the fraction by dividing
the numerator and denominator by 36
and get our simplified answer

252 ÷ 36 / 288 ÷ 36=

7 /8

Instead of finding the GCF, you can simplify with mental math.

If you notice they are both divisible by any number, divide them both by this number to simplify until they share no common factors.

252 and 288 are both divisible by 2.

252/288 = 126/144

126 and 144 are both divisible by 2.

126/144 = 63/72

63 and 72 are both divisible by 3.

63/72 = 21/24

21 and 24 are both divisible by 3.

21/24 = 7/8

A-b=4 and a+b=6 find a²+b² and ab

Answers

Answer:

...a-b=4

a+b=6

→2a=10

→a=10/2 =5

we calculate b:

a-b=4

5-b=4

-b=4-5

b=1

→a=5; b=1

a²+b² = 5²+1² = 25+1 = 26

ab =5*1 = 5

Can someone show me the steps to this equation. z- 4(2/3) = 2(2/3)
it read Z minus four and 2/3 equals two and two thirds just to clear confusion that the 2 and 4 are not being multiplied by 2/3

Answers

so z-4 2/3=2 2/3
so 4 2/3=12/3+2/3=14/3
2 2/3=6/3+2/3=8/3
z-14/3=8/3
multiply both sides by 3
3z-14=8
add 14 to both sides
3z=22
divide both sides by 3
z=22/3=7 1/3

$z-4(2)/(3)=2(2)/(3)\ \ \ \ |add\ 4(2)/(3)\ to\ both\ sides\n\nz=2(2)/(3)+4(2)/(3)\n\nz=6(4)/(3)\n\n\boxed{z=7(1)/(3)}$

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