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3 years ago

Y2 + 8zx - 2xy -4yz factorise ?

Mathematics

1 answer:

Rainbow [258]3 years ago

4 0

$y^2+8zx-2xy-4yz=(y^2-2xy)+(8xz-4yz)\\\\=y(y-2x)-4z(-2x+y)=y(y-2)-4z(y-2x)\\\\=\boxed{(y-2x)(y-4z)}$

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The ratio of books to magazines in the classroom is 7:3. If there are 28 books in the

ss7ja [257]

Answer:

Step-by-step explanation:

7 books.................................3 magazines

14 books.................................6 magazines

21 books................................9 magazines

28 books..............................12 magazines

of course we ca do it

7/3=28/x

x=(3*28)/7=12

6 0

2 years ago

The Kendal Company manufactures automobile engine parts. Running the manufacturing operations requires 12 watts (units of electr

Monica [59]

24 because when you plug in 0 for both x and y:

0=12(0)+24

12*0=0, leaving you with 24.

4 0

3 years ago

Find the equation of the line with slope 1/3 and y interception (0,-2)

Andreyy89

Answer:

y=(1/3)x-2

Step-by-step explanation:

Plug into equation of y=mx+b

y=(1/3)x-2

6 0

3 years ago

Your sample size is 10 and your confidence is 90%. What is your t-score?

PilotLPTM [1.2K]

Answer:

if you want a t*-value for a 90% confidence interval when you have 9 degrees of freedom, go to the bottom of the table, find the column for 90%, and intersect it with the row for df = 9. This gives you a t*–value of 1.833 (rounded).

Step-by-step explanation:

Hope this helps!

6 0

3 years ago

Pls help is due for today pls

pentagon [3]

Answer:

Part A: The rate of change was greater in case of the graph.

Part B: The figure shows the graph of function A in Redline and Function B in blue line

Part C : Initial value of function B is greater than Function A.

Step-by-step explanation:

Here, Function A show graph of a line and Function show table show a set of value of x and y.

Part A). Which function show greater rate of change.

The slope of line is given by m = $\frac{Y2-Y1}{X2-X1}$

For function A:

Given graph passes through points (04) and (2,12)

The slope of line is m= $\frac{12-4}{2-0}$

= $\frac{8}{2}$

= 4

For function B:

Given the table has points (012) and (2,14)

The slope of line is m= $\frac{14-12}{2-0}$

= $\frac{2}{2}$

= 1

Therefore, The rate of change was greater in case of graph.

Part B). Plot the graph of a function B onto the graph of a function A

The figure shows the graph of function A in Redline and Function B in blueline

Line of function A is more tilted toward the y-axis than Line of function B.

Therefore, Rate of change of function A is greater than Function B.

Part C). Which function has greater initial value?

For function A:

From the graph of part B,

When x=0 y=4

For function B:

From the graph of part B,

When x=0 y=12

Therefore, Initial value of function B is greater than Function A.

5 0

3 years ago