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3 years ago

Actually thats wrong bc my teacher did it with us but i really dont know the answer

Mathematics

2 answers:

Dvinal [7]3 years ago

8 0

Answer:

???

Step-by-step explanation:

Anon25 [30]3 years ago

3 0

Darn
do u have the question lololol

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The function f(x) = x2 is transformed to f(x) = −1.4x2. Which statement describes the effect(s) of the transformation on the gra

Romashka-Z-Leto [24]

Answer:

C) The parabola is narrower and reflected across the x-axis.

Step-by-step explanation:

The original parabola has equation:

$f(x) = {x}^{2}$

The transformed parabola has equation

$f(x) = - 1.4 {x}^{2}$

How wide the graph is can be determined by the absolute value of the coefficient.

The smaller the absolute value of the coefficient, the wider the graph.

Since

$|1| \: < \: | - 1.4|$

The original graph is wider than the transformed graph.

Also the negative factor tells us there is a reflection in the x-axis.

3 0

3 years ago

Question 1

Arada [10]

The answer is n+7 and 7+n

5 0

3 years ago

Write each pair of quantities as a unit rate.

Ronch [10]

A) 75heartbeats per min
B) $9.35 per ticket
C) 2.25 per golf ball
D) $9.75 per hour

3 0

2 years ago

The position of an object at time t is given by s(t) = -9 - 3t. Find the instantaneous velocity at t = 8 by finding the derivati

pogonyaev

Given the function s(t) = -9 -3t, differentiating the function gives the instantaneous velocity. s’(t) = -3 This means that the velocity is not a function of time and is therefore constant. The velocity at t = 8 ( or any time for that matter) is -3 units/time.

4 0

2 years ago

The base of a right triangle is increasing at a rate of 2 meters per hour and the height is decreasing at a rate of 3 meters per

STatiana [176]

Answer:

dL/dt = - 2,019 m/h

Step-by-step explanation:

L² = x² + y² (1) Where x, and y are the legs of the right triangle and L the hypotenuse

If the base of the triangle, let´s call x is increasing at the rate of 2 m/h

then dx/dt = 2 m/h. And the height is decreasing at the rate of 3 m/h or dy/dt = - 3 m/h

If we take differentials on both sides of the equation (1)

2*L*dL/dt = 2*x*dx/dt + 2*y*dy/dt

L*dL/dt = x*dx/dt + y*dy/dt (2)

When the base is 9 and the height is 22 according to equation (1) the hypotenuse is:

L = √ (9)² + (22)² ⇒ L = √565 ⇒ L = 23,77

Therefore we got all the information to get dL/dt .

L*dL/dt = x*dx/dt + y*dy/dt

23,77 * dL/dt = 9*2 + 22* ( - 3)

dL/dt = ( 18 - 66 ) / 23,77

dL/dt = - 2,019 m/h

6 0

3 years ago