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2 years ago

If using the method of completing the square to solve the quadratic equation

Mathematics

1 answer:

zheka24 [161]2 years ago

8 0

Answer: 25

Step-by-step explanation: The number that is added to both sides is the number that is needed to create a perfect square trinomial.

The question is, what is that number?

Well, it comes from a formula. The number that is added to both sides always comes from half the coefficient of the middle term squared.

So half of -10 squared or -5 squared which is 25.

So 25 is added to both sides.

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What’s the equation of a slope of 5/7 and a y-intercept of -3

Drupady [299]

Answer:

Step-by-step explanation:

in y = mx + b form, the slope is in the m position and the y intercept is in the b position.

y = mx + b

slope(m) = 5/7

y int (b) = -3

y = 5/7x - 3 <===

8 0

3 years ago

Ten boys and twelve girls decide to rent a 16-passenger van and a 6-passenger to drive to a rock concert in a near by city. If t

stira [4]

A) The probability that there are no boys in the car is given by:
$P(no\ boys\ in\ car)=\frac{12C6}{22C6}=0.012$

5 0

2 years ago

When an object moves in a circle the __________ of the object is continually changing. What is the missing word in this sentence

Bezzdna [24]

Answer:

velocity

Step-by-step explanation:

The velocity of the object is continually changing. This velocity is the slope of the tangent line to the curve at a given point on the curve.

3 0

2 years ago

Help pls- <br><br> I dont know it T^T

docker41 [41]

Answer:

Ans: H and A

Step-by-step explanation:

By the identity:

1-(cos(x)) $cos^{2}(x)+ sin^{2}(x)=1\\cos^{2}(x)=1- sin^{2}(x)\\\\cos(x)=\sqrt{1- sin^{2}(x)} \\sin(x)=\sqrt{1- cos^{2}(x)}\\\\\sqrt{1- cos^{2}(x)}/sinx=1\\\sqrt{1- sin^{2}(x)}/cosx=1\\\sqrt{1- cos^{2}(x)}/sinx+\sqrt{1- sin^{2}(x)}/cosx=2\\\\\\$

Ans: H

For second quesiton, the transformation of a graph is that:

f(x) + k means vertical translation up by k units

Two curve have the same maximum value, so the graph doesn't translate upwards or downwards, thus b=0

Ans: A

7 0

2 years ago

Which of the following is equivalent to 4x+5y=12?

rosijanka [135]

Answer: Slope=−

2.000

1.600

=−0.800

x−intercept=

y−intercept=

=2.40000

Step-by-step explanation:

5 0

3 years ago