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2 years ago

What is the equation for table A. What is the equation for table B.

Mathematics

1 answer:

xeze [42]2 years ago

7 0

Answer:

A: y=-2/3x + 3

B: y=x-2

solution: (3,1)

Step-by-step explanation:

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Which point is on a circle with a center of (3,-9) and a radius of 5

agasfer [191]

Simply travel 5 units left, right, up and down to find other points on the circle using the center point.
Other points include...
(8, -9)
(-2, -9)
(3, -14)
(3, -4)
Hope this helps!

5 0

3 years ago

Tickets to a museum cost $17 each. For a field trip, the museum offers a $4 discount on each ticket. How much will tickets for 3

faltersainse [42]

For this problem you sinply multiply 4 by 32.

4 x 32 = 128

Therefore it will cost $128 for a field trip with 32 students

6 0

3 years ago

Read 2 more answers

Two trains travel a 160 km track each day. The express travels 10 km h^-1 faster and take 30 minutes less time than the normal t

aniked [119]

Let s = the speed of the slower train in km/hrs+10 = the speed of the faster train in km/hrLet t = time in hrs for the slower train to go 160 kmt-5 = time in hrs for faster train to go 160 km---------------Slower train:(1)
160=s.t

Faster train:(2) 160=(s+10) .(t-.5)From (1)(1) t=160/s
use the relations given in following screenshot and then use quadratic equation.

4 0

3 years ago

Find the value of X in the image above.

zaharov [31]

Answer:

58°

Step-by-step explanation:

$(x + 6) \degree + 2x \degree = 180 \degree..(straight \: line \: \angle s) \\ \\ (3x + 6) \degree = 180 \degree \\ \\ 3x + 6 = 180 \\ \\3x = 180 - 6 \\ \\ 3x = 174 \\ \\ x = \frac{174}{3} \\ \\ \huge \red{ \boxed{ x = 58}}$

3 0

3 years ago

(i) Write the expansion of (x + y)² and (x - y)². (ii) Find (x + y)² - (x - y)² (iii) Write 12 as the difference of two perfect

zaharov [31]

Answer:

1a (x + y)² = x² + 2xy + y²

1b. (x - y)² = x² - 2xy + y²

2. (x + y)² - (x - y)² = 4xy

3. 4² – 2² = 12

Step-by-step explanation:

1a. Expansion of (x + y)²

(x + y)² = (x + y)(x + y)

(x + y)² = x(x + y) + y(x + y)

(x + y)² = x² + xy + xy + y²

(x + y)² = x² + 2xy + y²

1b. Expansion of (x - y)²

(x - y)² = (x - y)(x - y)

(x - y)² = x(x - y) - y(x - y)

(x - y)² = x² - xy - xy + y²

(x - y)² = x² - 2xy + y²

2. Determination of (x + y)² - (x - y)²

This can be obtained as follow

(x + y)² = x² + 2xy + y²

(x - y)² = x² - 2xy + y²

(x + y)² - (x - y)² = x² + 2xy + y² - (x² - 2xy + y²)

= x² + 2xy + y² - x² + 2xy - y²

= x² - x² + 2xy + 2xy + y² - y²

= 2xy + 2xy

= 4xy

(x + y)² - (x - y)² = 4xy

3. Writing 12 as the difference of two perfect square.

To do this, we shall subtract 12 from a perfect square to obtain a number which has a perfect square root.

We'll begin by 4

4² – 12

16 – 12 = 4

Find the square root of 4

√4 = 2

4 has a square root of 2.

Thus,

4² – 12 = 4

4² – 12 = 2²

Rearrange

4² – 2² = 12

Therefore, 12 as a difference of two perfect square is 4² – 2²

7 0

3 years ago