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3 years ago

PLZ HELP I NEED THIS WILL GIVE BRAINEST

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

5 0

(x,y) –> (x+9, y+8)

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Which is the correct form of the quadratic formula?

d1i1m1o1n [39]

Answer:

The form ax2 + bx + c = 0 is called standard form of a quadratic equation. Before solving a quadratic equation using the Quadratic Formula, it's vital that you be sure the equation is in this form.

Step-by-step explanation:

5 0

4 years ago

Hi, teacher I was absent these days and I didn’t understand anything about this lesson and I need help this is not count as a te

motikmotik

Given:

There are given that the cos function:

$cos210^{\circ}=-\frac{\sqrt{3}}{2}$

Explanation:

To find the value, first, we need to use the half-angle formula:

So,

From the half-angle formula:

$cos(\frac{\theta}{2})=\pm\sqrt{\frac{1+cos\theta}{2}}$

Then,

Since 105 degrees is the 2nd quadrant so cosine is negative

Then,

By the formula:

$\begin{gathered} cos(105^{\circ})=cos(\frac{210^{\circ}}{2}) \\ =-\sqrt{\frac{1+cos(210)}{2}} \end{gathered}$

Then,

Put the value of cos210 degrees into the above function:

So,

$\begin{gathered} cos(105^{\circ})=-\sqrt{\frac{1+cos(210)}{2}} \\ cos(105^{\operatorname{\circ}})=-\sqrt{\frac{1-\frac{\sqrt{3}}{2}}{2}} \\ cos(105^{\circ})=-\sqrt{\frac{2-\sqrt{3}}{4}} \\ cos(105^{\circ})=-\frac{\sqrt{2-\sqrt{3}}}{2} \end{gathered}$

Final answer:

Hence, the value of the cos(105) is shown below:

$cos(105^{\operatorname{\circ}})=-\frac{\sqrt{2-\sqrt{3}}}{2}$

4 0

1 year ago

What is the area of a circle if the circumference is 29

Kruka [31]

Answer:

67 square units

Step-by-step explanation:

Circumference/pi = diameter

29/3.14 = 9.24

Radius = 9.24/2 = 4.62

A = pi * r^2

A = 3.14 * 4.62^2 = 67 square units

8 0

2 years ago

0.6x = 1.2x + 6 A) −1 B) −10 C) 1 D) 10

son4ous [18]

Answer:

x = -10

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

5. There are two kinds of products (called DA and GA) produced in your company every day. Alsothere are two kinds of materials (

chubhunter [2.5K]

Answer:

a) $56000
b) DA = 2, GA = 10

Step-by-step explanation:

Given

DA = A + B ⇒ $3000
GA = A + 2B ⇒ $5000
Number of A = 12
Number of B = 22

We can see from the equations that

GA - DA = B ⇒ $2000 and
A = $1000 and B = $2000 in terms of profit

So greater use of unit B brings greater profit. We don't want any unit is left over, so get this equation.

A + B = 12
A + 2B = 22

Is the equation set to indicate use of the units A and B

Solving we get

A = 2 and
B = 10

It this case all the units are used and profit is maximum

2*$3000 + 10*$5000 = $56000

Number of DA = 2
Number of GA = 10

8 0

3 years ago