MATHEMATICS HIGH SCHOOL

What is the solution to the following equation? -32-8x=-7x+8(8x-4)

Answers

Answer 1
Answer:

the answer to your question is x=0
Answer 2
Answer:

X=0

−32−8x=−7x+8(8x−4)

−8x−32=−7x+8(8x−4)

−8x−32=−7x+64x−32

−8x−32=57−32

−8−32+32=57−32+32

−8=57

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Find the sine, cosine and tangent for 15 degrees

Answers

sin(15) = 0.258819045103
cos(15) = 0.965925826289
tan(15) = 0.267949192431
all you do is get a graphing calculator input sin(15), then cos(15), and tan(15), make sure the calculator is in degrees not radians hit enter or what ever the answer button is and it should tell you your answer 

Which equation has an a-value of 1, a b-value of –3, and a c-value of –5?

Answers

Answer:

x^2-3x-5

Step-by-step explanation:

The standard quadratic equations are given in the form of

ax^2+bx+c

Comparing the values of a , b and c and putting a=1 , b=-3 and c=-5 in the equation we get our quadratic polynomial as

x^2-3x-5
c-b=-2a If that is a possibility.

Define a function. Describe what the vertical line test is used for. Describe a real life situation that can be represented by a function.

Answers

A function is a relationship with a quantity (number). For example, if you made a table, and had one side be 1 2 3 4 5 (X axis) and then the y axis (other side) be 5, 10, 15, 20, 25, the function (rule) would be y= x5. The vertical line test is used to see if a graph has a function or not, so if it creates a vertical line on a graph, it has a function.
A real life situation would be miles per hour, so, for the x axis (hours) it said 1, and for the y axis (miles) it would be 60, this means in a duration of 1 hour you went 60 miles. Well, lets say you went 2 hours driving, the miles would be 120. 
For 3 hours, it would be 180. The function here is y= x60!
If you have any questions ask me!

The designer also programs a bird with a path that can be modeled by a quadratic function. The bird starts at the vertex of the path at (0, 20) and passes through the point (10, 8). What is the slope of the line that represents the turtle's path?

Answers

Answer:

-1.2

Step-by-step explanation:

Given that the designer also programs a bird with a path that can be modeled by a quadratic function.

The bird starts at the vertex of the path at (0, 20) and passes through the point (10, 8).

If we treat this curve as line joining these two points then we can find the slope by the formula

Slope = change in y coordinate/change in x coordinate

Here the points given are

(0,20) and (10,8)

Change in y coordinate = 8-20 = -12\nChange in x coordinate = 10-0 = 10\nSlope = -1.2

Slope of the line that represents the turtle's path

=-1.2

Answer: 0.8

Step-by-step explanation: i got it right on edg

second part to the question is

h= 0

k= 20

a= -0.12

third part is letter B

Find y when x=21/2, if y varies inversely as x and x=5 when y=3A. 2.5/3=3/4;6
B. 2.5/3=3/4;3
C. 2.5/3=5/3;6
D. 2.5/3=5/4;3

Answers

y varies inversely as x:
y=C/x
C: Constant

Cross multiplication
yx=C

x=5 when y=3
Replacing in the equation above:
(3)(5)=C

when x=2 1/2=2+0.5→x=2.5, y=?
xy=C
(2.5)(y)=C

Equaling the two equations:
C=C
(2.5)(y)=(3)(5)
2.5/3=5/y

Solving for y. Dividing both sides of the equation by 2.5:
(2.5)(y)/(2.5)=(3)(5)/(2.5)
y=6

Answer:
2.5/3=5/6

How many nickles and dimes are $5.20 if there are six times more nickles than dimes?

Answers

In looking for the number of nickel and dimes we need to establish first equations:
n = $0.05
d = $0.1

0.05n + 0.1d = 5.20
0.05n = 6 (0.1d) ; n = 0.083d

Then we will solve it by substitution:
0.05(0.083d) + 0.1d = 5.20
0.42d + 0.1d = 5.20
0.52d = 5.20
d = 10

n = 0.083(10)
n = 0.83
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