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Scrat [10]
4 years ago
9

I don’t know can someone tell me the answers?

Mathematics
2 answers:
Kitty [74]4 years ago
6 0

I only know the answer to number 1,which is 21 but for the rest I can suggest using You tube and going to the channel mathantics

Hope this helps

miss Akunina [59]4 years ago
3 0

Answer:

1. 21

2.5/6

3. 20/3

Step-by-step explanation:


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myrzilka [38]
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x = 112 + 4
x = 112 - 4

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3 years ago
4:n=6:9 how do you get it?
MAVERICK [17]

Answer:

3.1

Step-by-step explanation:

7 0
4 years ago
2x + y =5 solve the system of equations by inspection
olga2289 [7]

Answer:

Slope=− 2.000/4.000 =−2.000

x−intercept= 2/5=2.50000

y−intercept= 1/5=5.00000

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :          

2*x+y-(5)=0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  2x+y-5  = 0 and calculate its properties

Notice that when x = 0 the value of y is 5/1 so this line "cuts" the y axis at y= 5.00000

 y-intercept = 5/1  =  5.00000

When y = 0 the value of x is 5/2 Our line therefore "cuts" the x axis at x= 2.50000

 x-intercept = 5/2  =  2.50000

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 5.000 and for x=2.000, the value of y is 1.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 1.000 - 5.000 = -4.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     = -4.000/2.000 = -2.000

8 0
3 years ago
What is the value of the expression 3.9x10^5/1.3x10^2?
kvv77 [185]

Answer: 3 * 10 ^3

Step-by-step explanation:

Divide the numbers

3.9 / 1.3

3

Subtract the powers of 10

10^5 / 10^2 = 10 ^ (5-2) = 10^3

The result is 3 * 10 ^3

4 0
3 years ago
Select all the expressions that are equivalent to 16x - 12 -24x + 4.
mixas84 [53]

Answer:

Expressions equivalent to 16x - 12 -24x + 4.

-8x - 8 , - (8x + 8) , 8 (-x -1) , -8 (x + 1)

Step-by-step explanation:

16x -12 -24x + 4

Arranging like terms, 16x - 24x - 12 + 4 = -8x - 8

Taking common minus, =  - (8x + 8)

Taking common 8, = 8 (-x -1)

Taking common -8, = -8 (x +1)  

3 0
3 years ago
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