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3 years ago

Solving Quadratic equations by factoring 2x^2-20x+42

Mathematics

1 answer:

elixir [45]3 years ago

8 0

Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.

x = 7,3

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Solve the inequality. Graph the solution.<br> −1.4 ≤ h + 1.1

Tcecarenko [31]

Answer:

Step-by-step explanation:

- 1.4 < h + 1.1

Solve for H. Get H by itself by subtracting 1.1 on both sides of the equation.

-1.4 - 1.1 = - 2.5

-2.5 < h

7 0

3 years ago

A 9230-kg truck collides head on with a 1250-kg parked car. The vehicles entangle together and slide a linear distance of 10.6 m

Helen [10]

Answer:

=>By the work energy relation:-

=>W = ∆KE

=>Ff.s = 1/2(M+m)v^2

=>µk x N x s = 1/2(M+m)v^2

=>µk x (M+m) x g x s = 1/2(M+m)v^2

=>v = √[2µkgs]

=>v = √[2 x 0.82 x 9.8 x 10.6]

=>v = 13.05 m/s

By the law of momentum conservation:-

=>Mu = (M+m)v

=>9230u = (9230+1250) x 13.05

=>u = 14.82 m/s

Step-by-step explanation:

3 0

3 years ago

Find the coordinate of the midpoint of GH with endpoints G(-5,4) and H (-5,8)

Yuri [45]

Answer:

(-5,6)

Step-by-step explanation:

G(-5,4)=(x1,y1)

H(-5,8)=(x2, y2)

midpoint=?

now,

(x,y)= x1+x2/2 y1+y2/2

-5-5/2 4+8/2

-10/2 12/2

-5 6

therefore the co ordinates of midpoint are(-5,6)

3 0

3 years ago

Can someone please help me figure out how to solve for x?

Anna007 [38]

Answer:

$x=30$

Step-by-step explanation:

Both triangles in this figure are similar. Therefore, we can set up the following proportion:

$\frac{21}{x}=\frac{14}{20}$ .

Cross-multiply to solve:

$14x=21\cdot 20,\\x=\frac{21\cdot20}{14},\\x=\fbox{$30$}$ .

8 0

3 years ago

Find the surface area of the triangular prism below.

Lapatulllka [165]

Step-by-step explanation:

At first you need to take its lateral surface area by using the perimeter of base of the triangle and the height of prism.

Then after calculating it you need to find out its total surface area which is asked in the question and that is calculated by adding the area of both triangles of the prism in the lateral surface area.

Then that's your answer.

5 0

3 years ago

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