MATHEMATICS HIGH SCHOOL

Find the difference.(5x2 + 2x + 11) - (7 + 4x - 2x2)
A.
3x2 + 6x + 4
B.
9 - 2x - 2x2
C.
3x2 - 2x + 4
D.
7x2 - 2x + 4

Answers

Answer 1
Answer:

Answer:

D

Step-by-step explanation:
Answer 2
Answer:

Answer:

D.)   9 − 2x − 2x2

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Name four points that are not coplanar​

Answers

Answer: U, W, Z and Y

Step-by-step explanation:

4 points are not coplanar if there does not exist any plane that contains the 4 points.

So, a plane is formed by a line and one point outside of it.

Then, we want to select the last point in such a way that it lies outside of the plane generated by the first 3 points selected.

For example:

If first we select Point U and Point W, we will have a line, as shown in the image.

Now we can select the Point  Z, that is outside the line, and now we have the plane M that you can see in the image.

Now we need to select a point that is not in the plane, the only two options are Point X and Point Y, we can select any of those two, let's take the Point Y.

So, here we have that:

Points U, W, Z and Y are not coplanar.

Form a polynomial f(x) with real coefficients having the given degree and zeros. a) f(x) = x^3 - 5x^2 + x + 5 b) f(x) = x^3 - 5x^2 + x - 5 c) f(x) = x^3 + 5x + x - 5 d) f(x) = x + 5x^2 - x + 5

Answers

Answer:

what is math

Step-by-step explanation:

I want to teach you how to use a plane mirror to see if I want to go would have clear photo pathaununa is the best person like cmt thorai vyo

yeah a successful and non uniform and non-uniform is used for free a plane mirror a convex lens for Canon printer and non-uniform a successful and rich

Name the property for the given statement. (4 6)(3) = (4)(3) (6)(3)

Answers

DISTRIBUTIVE PROPERTY IS THE PROPERTY USED IN THE GIVEN STATEMENT...

Answer:

distributive property because you must distribute the numbers in parenthesis

Step-by-step explanation:

Atraeus is solving the quadratic equation by completing the square. 7x^2 – 14x + 6 = 0 7x^2 – 14x = –6 A(x^2 – 2x) = –6 What is the value of A?

Answers

Hello,

A=7
Indeed
A(x²-2x)=-6
7x²-14x=-6

==>A=7 and -14=-2A==>A=7

Answer: D

Step-by-step explanation:

Choose Yes or No to tell whether there is more than one way to draw a triangle with the given measures. AB = 15 cm, BC = 20 cm, ∠B = 40° AB = 20 cm, AC = 15 cm, ∠C = 40° BC = 10 cm, AB = 5 cm, ∠A = 20° AC = 5 cm, BC = 10 cm, AB = 14 cm

Answers

Question:

a. AB = 15 cm, BC = 20 cm, ∠B = 40°

b. AB = 20 cm, AC = 15 cm, ∠C = 40°

c. BC = 10 cm, AB = 5 cm, ∠A = 20°

d. AC = 5 cm, BC = 10 cm, AB = 14 cm

Answer:

The correct options are;

a. No

b. Yes

c. Yes

d. No

Step-by-step explanation:

a. AB = 15 cm, BC = 20 cm, ∠B = 40°

No

The above dimensions include two sides and an included angle, therefore, the triangle is well defined, such that the dimensions of the third side can be found by the given information using cosine rule

b. AB = 20 cm, AC = 15 cm, ∠C = 40°

Yes,

The above dimensions include two sides and a non included angle, therefore, the triangle is not well defined, such that the third side and the other two angles can be made to to make up to a different triangular configuration can be made

c. BC = 10 cm, AB = 5 cm, ∠A = 20°

Yes

The above triangle could be made into one of two triangles

d. AC = 5 cm, BC = 10 cm, AB = 14 cm

No

The above triangle is well defined with all side dimensions known and the angles can be found by cosine rule.

A music festival charges $54.95 per ticket sold on the day of the event. A ticket purchases before the festival costs only $39.95. They were 20,000 tickets sold for a total of 925,000. How many tickets did they sell at the music festival? How many tickets do they sell before the music festival?

Answers

b=number of ticets sold before
a=number of tickets sold after

cost of a ticket=number of tickets times cost per ticket
beforecost=39.95b
aftercost=54.95a

total cost=925000
39.95b+54.95a=925000

total number tickets=20000
b+a=20000

we have

39.95b+54.95a=925000
b+a=20000
multiply second equation by -39.95 and add to first equatin
39.95b+54.95a=925000
-39.95b-39.95a=-799000 +
0b+15a=126000

15a=126000
divide bot sides by 15
a=8400

sub back
b+a=20000
b+8400=20000
minus 8400 both sides
b=11600




11,600 tickets sold before
8400 tickets sold after
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