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3 years ago

Solve x2 – 2x = 15 by applying the quadratic formula.

Mathematics

1 answer:

julia-pushkina [17]3 years ago

5 0

Answer:

x = -60 and 20300

Step-by-step explanation:

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What are the x-intercepts of this quadratic function? g(x) = -2(x - 4)(x + 1)

Sav [38]

Answer:

4 and -1

Step-by-step explanation:

A quadratic function is given to us and we need to find the x Intercepts of the given function . The function is ,

$\bf \implies g(x) = -2( x -4)(x+1)$

Step 1 : Equate the function with 0,

$\bf \implies -2( x -4)(x+1) = 0$

Step 2: Equating with 0 :-

Now equate each factors seperately with 0 , to get the x Intercepts.

Step 3: Finding the intercepts :-

$\bf \implies x - 4 = 0 \\\\\implies\boxed{\bf\blue{ x = 4 }}$

Again ,

$\bf \implies x + 1 = 0 \\\\\implies\boxed{ \blue{\bf x = -1}}$

Hence the x intercepts are 4 and -1 .

3 0

3 years ago

2x - 3y = 16 5x - 3y = 13 Solve the system of equations.

Alla [95]

Answer:

x=1 and y=-7

Step-by-step explanation:

I used the elimination method to solve the equation.

7 0

3 years ago

Read 2 more answers

What is the result of converting 60 ounces to pounds?

victus00 [196]

3.75 pounds in 60 ounces. :)

7 0

3 years ago

Read 2 more answers

The vertices of a triangle are (-1.3) (-5,3) (-5,7) how would you reflect the triangle in the x-axis and in the y-axis ? Give th

grandymaker [24]

Simple way to see it is to multiply the value opposite of the axis you're flipping it over by -1. For example the point (-5,7) would become (5,7) when reflected over the y-axis, because the point is moving from the left to the right. This means the triangle would be (1,3) (5,3) and (5,7) when reflected over the y-axis. For reflection over the x-axis it would be (-1,-3) (-5,-3) and (-5,-7) because each point is moving down.

8 0

3 years ago

A new cookie cake company is offering a

gtnhenbr [62]

Answer:

200.96in^2

Step-by-step explanation:

If the 1st cookie cake is 8" for its diameter and the 2nd cookie cake will have twice the length diameter of the 1st cookie cake .You will do 2 × 8 to get the diameter of the 2nd cookie cake.

First cookie cake diameter is 8".

Second cookie cake's diameter is 16".

Since we need the radius to find the area of the 2nd cookie cake we're going to do 16 / 2 which equals 8 so 8 is the radius.

A=(pi)r^2

A=(pi)8^2 *to the 2nd power means times by the same number

A=(pi)64

A= (3.14)(64)

A=200.96

=200.96^2

pi= 3.14 *for this problem

7 0

3 years ago