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2 years ago

Write a cosine function that has a midline of 2, an amplitude of 4 and a period of pi/2.

Mathematics

1 answer:

exis [7]2 years ago

4 0

y = Acos(Bx) + D;

D = 4, A = 2. Now T = 2π/B = 5π/8, B = 2π/(5π/8) = 16/5

WE get y = 2cos(16/5x) + 4

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Harold swam 6 2/5 km in 2 hours how far could Harold swim in 5 hours

Mama L [17]

The distance that Harold swim in 5 hours should be 16 km.

Given that,

Harold swam 6 2 ÷ 5 km in 2 hours.
And, the number of hours given is 5 hours.

Here we assume the distance be x

So,

$6\frac{2}{5}$ =6.4

Now

$\frac{6.4}{2}=\frac{X}{5}$

2x=(6.4)(5)

2x=32

Now Divide by 2 on both sides

Thus,

X=16 km

Therefore, we can conclude that the distance that Harold swim in 5 hours should be 16 km.

Learn more about the distance here: brainly.com/question/12319416

4 0

3 years ago

Help the pic has questions

kykrilka [37]

Answer:

a) $x = 9$

b) $m \angle 1 = m \angle 2 = 54^\circ$

Step-by-step explanation:

Since $r\ ||\ s$ , through the Alternate Angle Theorem, $m \angle 1 = m \angle 2$ . We can solve for x by setting up an equation where both angles are equal to each other:

$m \angle 1 = m \angle 2\\63-x = 72-2x\\63 +x = 72\\x = 9$

Now plug in x for both of the formulas to get their angles:

$m \angle 1 = (63 - x)^\circ = (63-9)^\circ = 54^\circ$ $m \angle 2 = (72-2x)^\circ = (72-2(9))^\circ = (72-18)^\circ = 54^\circ$

6 0

2 years ago

Is 9.465 an irrational number

Sunny_sXe [5.5K]

Answer:

yes is a 9.465 an irrational number

Step-by-step explanation:

7 0

4 years ago

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Analyzing graphs: Please fill in the following based on the graph. Seriously need help with this ASAP please!

Mariana [72]

Answer:

continous!

- infinite<x<infinte

y<=1

zeros at -4 and-2

(-infinite, -3)

(-3,infinite)

4 0

3 years ago

Factor b^4 - 2b^2 - 63

Andrej [43]

Answer:

( b − 9 ) ( b + 7 )

Step-by-step explanation:

Find two number that multiplies - 63 and add - 2

9 & 7 are both the greatest common factor

4 0

3 years ago

Read 2 more answers