MATHEMATICS COLLEGE

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−5y=−5 THANKS
7x+6y=7
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Is (5,1) a solution of the system?

Answers

Answer 1
Answer:

Answer:

{x = 1/7,y = 1

Step-by-step explanation:

Solve the following system:

{-5 y = -5 | (equation 1)

{7 x + 6 y = 7 | (equation 2)

Swap equation 1 with equation 2:

{7 x + 6 y = 7 | (equation 1)

{0 x - 5 y = -5 | (equation 2)

Divide equation 2 by -5:

{7 x + 6 y = 7 | (equation 1)

{0 x+y = 1 | (equation 2)

Subtract 6 × (equation 2) from equation 1:

{7 x+0 y = 1 | (equation 1)

{0 x+y = 1 | (equation 2)

Divide equation 1 by 7:

{x+0 y = 1/7 | (equation 1)

{0 x+y = 1 | (equation 2)

Collect results:    Answer:    {x = 1/7,y = 1
Answer 2
Answer:

Answer:

No

Step-by-step explanation:

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N f(x) =10-2( x ), Solve when given f(12) function notation
You have just received a windfall from an investment you made in a friend's business. He will be paying you $10,000 at the end of this year, $20,000 at the end of the following year, and $30,000 at the end of the year after that (three years from today). The interest rate is 3.5% per year. a.What is the present value of your windfall? b.What is the future value of your windfall in three years (on the date of the last payment)?
I need help finding the domain and range, I already know is not a function​
Find the parametric and symmetric equations for the line passing through the points P1=(2,2,3) and P2=(1,3,−1) . NOTE: this problem does not have a unique answer unless we specify how to choose the direction vector v (see pages 610 and 611). In order to obtain the required solution for this problem use the vector v=P1−P2 (see page 585). Further, you need to use the given point P1 in the formula. PARAMETRIC: x(t)= y(t)= z(t)= SYMMETRIC: (quotient involving x ) = (quotient involving y) = (quotient involving z ) =

A triangle with vertices (-2,3), (5,4), and (-1,-1) is translated using the rule (x,y) (x-3, y+4) what are the coordinates of the image?

Answers

Answer:

(-5,7)(2,8)

Step-by-step explanation:

your just adding and subtracting the x and y with the rule it gives you

Use a half-angle identity to fifd the exact value of sin 75º

Answers

Answer:sin75=√(2+√3)/2

Step-by-step explanation:

Cosx=1-2sin^2(x/2) let x=150

Cos150=1-2sin^2(150/2) cos150=-√3/2

-(√3)/2=1-2sin^2(75)

2sin^2(75)=1+(√3)/2

2sin^2(75)=(2+√3)/2

Cross multiply

2x2sin^2(75)=2+√3

4sin^2(75)=2+√3

sin^2(75)=(2+√3)/4

Take square root of both sides

sin75=√(2+√3)/√4

sin75=√(2+√3)/2

Find the area of a triangle with sides a=5,b=8, and c=11 useing the herons formula​

Answers

Answer:

18.330302...

Step-by-step explanation:

Answer: 18.330302

Step-by-step explanation:

i think?!

Prove that if a,b and c are odd integers such that a + b +c = 0, then abc < 0. (you are permitted to use well-known properties of integers here.) be sure to show all work.

Answers

The sum of three odd integers will never be an even integer (0).

This proof is impossible.

A basketball player scored 26 points in one game. In basketball, some baskets are worth 3 points, some are worth 2 points, and free-throws are worth 1 point. He scored four more 2-point baskets than he did 3-point baskets. The number of free-throws equaled the sum of the number of 2-point and 3-point shots made. How many free-throws, 2-point shots, and 3-point shots did he make?

Answers

The number of free-throws, 2-point shots, and 3-point sho ts he made are;

free-throws = 8

2 points = 6

3 points = 2

Let the number of 3 points basket be x

He scored four more 2-point baskets than he did 3-point baskets. Thus;

y = x + 4

number of free-throws equaled the sum of the number of 2-point and 3-point sho ts made. Thus;

z = x + x + 4

z = 2x + 4

Thus;

Total 3 points = 3x

Total 2 points = 2(x + 4)

Total fr ee points = 2x + 4

Since he scored a total of 26 points, then;

Answer:

3 points = 2

2 points = 6

1 point = 8

Step-by-step explanation:

Given that:

Total point scored = 26

Let number of 3 point basket = x

Number of 2 point basket = x + 4

Number of free throws = x + x + 4 = 2x + 4

Hence,

Total 3 points = 3x

Total 2 points 2(x + 4)

Total free throw points = 2x + 4

3x + 2(x + 4) + 2x + 4 = 26

3x + 2x + 8 + 2x + 4 = 26

7x + 12 = 26

7x = 26 - 12

7x = 14

x = 2

Number of 3 points = x = 2

2 points = (x+4) = 2+4 = 6

1 point = (2x+ 4) = 2(2) + 4 = 8

Find the degree measure of the indicated angle.
?
22
135°

Answers

Answer:

measure of the indicated angle

=180-(135+22)

=180-157

=23°

thefirstoptionistheanswer

Answer:

23

Step-by-step explanation:

135+22 = 157

all angles add up to 180 degrees so

180-157 is 23
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