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Ilya [14]
3 years ago
14

Plz help me with this

Mathematics
1 answer:
zvonat [6]3 years ago
8 0

Answer:  5 cos x

<u>Step-by-step explanation:</u>

y = sin x     is       y = cos x        shifted to the right π/2 units.

y = 5 sin (x + π/2)     is a shift to the left π/2 units (which results in cos x) and    .                                 an amplitude of 5.

--> y = 5 cos x

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Write the equation of a line whose slope is -2 and goes through the point (1,-1)
scoundrel [369]

Answer:

y= -2x+1

Step-by-step explanation:

y=mx+b

Substitute the ordered pairs into the equation

So:

y= -1   m(slope) = -2  x=1   b=?

-1 = (-2)(1) + b

-1 = -2 +b  add 2  on both sides to get b by itself

-1 +2 = b

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8 0
3 years ago
Find the similarity ratio of a cube with a surface area of 36 m² to a cube with a
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Answer:

4.9

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10. Error Analysis A student draws a triangle with a perimeter 36 cm. The
Tasya [4]

Answer:

see the explanation

Step-by-step explanation:

we know that

The <u>Triangle Inequality Theorem</u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

In this problem

If the perimeter of triangle is equal to 36 cm

The longest side can't be equal to 18 cm

The student is incorrect

Because if the longest side is equal to 18 cm, and the perimeter is equal to 36 cm, then the sum of the other two sides is equal to 18 cm

and

Applying the triangle inequality theorem

Let

c  -----> the longest side

a and b the other two sides

we have that

if c=18 cm

a+b > c

a+b > 18 cm

therefore

If the longest side is 18 cm, the sum of the other two sides must be greater than 18 cm and the perimeter will be greater than 36 cm

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I need help what is this answer Yesterday, it rained for 335 minutes. The day before that it rained for 5 hours and 10 minutes.
VikaD [51]

Answer: Yesterday it rained longer

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335 minutes

= 5 7/12 hours

≈ 5.58333 hours

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= 5 hours & 35 minutes

Hope it helps and have a good day! (:^w^:)

3 0
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