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3 years ago

Jessica was trying to determine if her friends that had a two story house also had a minivan. She surveyed her

Mathematics

2 answers:

Pavel [41]3 years ago

7 0

Answer:

this is easy is C

Step-by-step explanation:

Naddik [55]3 years ago

6 0

The answer should be C

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NOW I HAVE MORE, PLZ HELP. IK EVERYONE SAYS THIS BUT PLZZZZZZZ

Kruka [31]

Try to focus the camera man

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2 years ago

Solve the equation. Check your answer.<br><br> 6y - 10 - 4y + 9 = 0

Kaylis [27]

$6y-10-4y+9=0\\\\(6y-4y)+(-10+9)=0\\\\2y-1=0\ \ \ |+1\\\\2y=1\ \ \ \ |:2\\\\\boxed{y=0.5}$

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3 years ago

In the previous part, we obtained dy dx = 3t2 − 27 −2t . Next, find the points where the tangent to the curve is horizontal. (En

mina [271]

Answer:

(27.55, 7.22), (-11.3, 3.21).

Step-by-step explanation:

When is the tangent to the curve horizontal?

The tangent curve is horizontal when the derivative is zero.

The derivative is:

$\frac{dy}{dx} = 3t^{2} - 2t - 27$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

$3t^{2} - 2t - 27 = 0$

$a = 3, b = -2, c = -27$

Then

$\bigtriangleup = b^{2} - 4ac = (-2)^{2} - 4*3*(-27) = 328$

$t_{1} = \frac{-(-2) + \sqrt{328}}{2*3} = 3.35$

$t_{2} = \frac{-(-2) - \sqrt{328}}{2*3} = -2.685$

Enter your answers as a comma-separated list of ordered pairs.

We found values of t, now we have to replace in the equations for x and y.

t = 3.35

$x = t^{3} - 3t = (3.35)^{3} - 3*3.35 = 27.55$

$y = t^{2} - 4 = (3.35)^2 - 4 = 7.22$

The first point is (27.55, 7.22)

t = -2.685

$x = t^{3} - 3t = (-2.685)^3 - 3*(-2.685) = -11.3$

$y = t^{2} - 4 = (-2.685)^2 - 4 = 3.21$

The second point is (-11.3, 3.21).

8 0

3 years ago

Is this HL, SSS, NOT CONGRUENT OR SAS

Sunny_sXe [5.5K]

Not congruent because we only have a side and angle or hypotenuse and angle. Not enough info

7 0

2 years ago

Read 2 more answers

Can someone solve these and show ur work!!

lbvjy [14]

Step-by-step explanation:

In the picture I solve all

3 0

3 years ago