HURRY PLEASE! I NEED HELP. PLEASE GIVE ME THE ANSWER

PLEASE PLEASE HELP ME!!! 25 POINTS!!! Find YZ

Luda [366]

Answer:

Is it not 2x + 12?

Step-by-step explanation:

4 0

3 years ago

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Evaluate the function. f(x)=-4x^2+10 find f(-2)

Julli [10]

Answer:

$f(-2)=-6$

Step-by-step explanation:

$f(x)=-4x^{2} +10$

At x=-2

$f(-2)=-4(-2)^{2} +10$

$f(-2)=-4(4) +10$

$f(-2)=-16 +10$

$f(-2)=-6$

8 0

3 years ago

HI I NEED HELP WITH THIS QUESTION ASAP!!!!!! ITS URGENT PLEASE HELP

natima [27]

a) The sinusoidal function is y = 7·sin(π/15(t - 2.5)) + 9

b) The height of the shorts at t = 10 minute is approximately 6 meters

The above answers were arrived at as follows

a) The general form of a sinusoidal equation is presented as follows;

y = A·sin(B(t - h)) + k

Where;

A = The amplitude of the graph of the function

The period, T = 2·π/B

h = The horizontal shift

k = The vertical shift

The maximum height of the blade = 16 meters

The minimum height of the blade = 2 meters

The time the blade moves from maximum height to minimum height = 25 s - 10 s = 15 s

Therefore, the time it takes the blade to move from maximum height to minimum height, the period, T= 2 × 15 s = 30 s

Therefore;

B = 2·π/30 = π/15

B = π/15

When B·(t - h) = π/2, t = 10

Therefore;

(π/15)·(10 - h) = π/2

10 - h = 15/2

h = 10 - 15/2 = 2.5

The horizontal shift, h = 2.5

The amplitude, A = (Max - Min)/2

∴ A = (16 - 2)/2 = 7

A = 7

The vertical shift, k = Min - (-Amplitude)

∴ k = 2 - (-7) = 9

The vertical shift, k = 9 Up

Therefore, the equation of the sinusoidal equation that describes the height of shorts in terms of time is given by plugging in the values of the variables, A, B, h, and k to get the following equation;

y = 7·sin(π/15·(t - 2.5)) + 9

b) The height of the shorts at exactly, t = 10 minutes = 600 seconds, is given as follows;

y = 7·sin(π/15·(t - 2.5)) + 9

10 minutes = 600 seconds

When t = 10 minutes = 600 seconds

∴ y = 7·sin(π/15(600 - 2.5)) + 9 = 5.5 ≈ 6

The height of the shorts at exactly t = 10 minutes ≈ 6 meters.

Get more information on sinusoidal functions here;

brainly.com/question/16820464

5 0

3 years ago

PLZZZZZ HELPPP ILL GIVE BRAINLIEST

tangare [24]

Answer:

340

Step-by-step explanation:

4 0

3 years ago

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I WILL MARK BRAINLIEST PLEASE HELP FIND ANGLE DEB ITS DUE AT 12 PLEASE HELP PLEASE

Gemiola [76]

Answer:

$\boxed {\boxed {\sf \angle DEB = 111 \textdegree}}$

Step-by-step explanation:

We want to find angle DEB. We know AB is perpendicular to AC, CD is congruent to CE and angle B is 48 degrees.

ABC is a triangle. The angles in a triangle must add up to 180 degrees. Therefore:

∠A+∠B+∠C= 180°

We know two angles: ∠B= 48° and ∠A= 90° (the little square denotes a right angle).

90°+48°+ ∠C= 180° Substitute values in.

138°+ ∠C =180° Add
138°-138° ∠C= 180°-138° Subtract 138 from both sides.
∠C= 42°

Note that angle C is part of another triangle. It is isosceles because the two legs (CD and CE) are congruent. Therefore, the two base angles (E and D) are congruent.

∠C+∠D+∠E= 180°
∠C+ 2∠D= 180° Angles D and E are congruent
42°+ 2∠D= 180° Substitute 42 in for angle C
42°-42° +2∠D= 180°-42° Subtract 42 from both sides.
2∠D= 138°
2∠D/2= 138°/2 Divide both sides by 2.
∠D= 69°

∠D and ∠E equal 69 degrees.

Angle CED (∠E) and DEB are on a straight line together. Therefore, they are supplementary and equal 180 degrees.

∠CED+ ∠DEB= 180
69° +∠DEB= 180° Substitute 69 for angle CED
69°-69° +∠DEB= 180°-69° Subtract 69 from both sides
∠DEB=111°

Angle DEB is equal to 111 degrees

8 0

3 years ago