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7nadin3 [17]
2 years ago
14

Factorise ab-a-b+1 =?

Mathematics
2 answers:
dexar [7]2 years ago
7 0

Answer: a(b - 1) -1 (b - 1)

(a - 1)(b - 1)

Step-by-step explanation:

Rufina [12.5K]2 years ago
7 0

Answer:

ab-a-b+1

For this equation there are no like terms!

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Use the equation of the circle centered at the origin and
Serggg [28]

Answer:

Step-by-step explanation:

The standard form of a circle is

(x-h)^2+(y-k)^2=r^2

If we are given x and y as 0 and 5 respectively, and we are also told that the center is (0, 0), our h and k are both 0. Filling in x, y, h, and k we can find the radius. So let's do that:

(0-0)^2+(5-0)^2=r^2 and

0^2+5^2=r^2 so

r^2=25  Our circle's equation is

x^2+y^2=25

Since the point in question, (4, 4), lies in the first quadrant, we will concentrate on that quadrant only. To fall within the circle, we can set up an inequality and test the point (4, 4). If it lies ON the circle then the equality would be true. Let's try that first:

4^2+4^2=25

Obviously, 16 + 16 does not equal 25, so that point (4, 4) does not lie ON the circle. In fact from that statement alone, we can determine that the point lies outside the circle because

4^2+4^2>25

If the inequality < were true then the point would lie inside.

5 0
3 years ago
Find the area of the rectangle below multiplying its length and width (5x-4)(2x-5)
Serhud [2]
Use the FOIL method to multiply these terms.  Multiply the first, outside, inside, and last terms:


(5x - 4)(2x - 5)

(5x)(2x) + (5x)(-5) + (-4)(2x) + (-4)(-5)

10x² - 25x - 8x + 20

10x² - 33x + 20


The area of the rectangle should be 10x² - 33x + 20.

7 0
3 years ago
Solve for x: 7x + 12 = 47
Inessa05 [86]

Answer:

7x + 12 = 47

7x = 35

x = 5

3 0
3 years ago
Eathan ran 11 miles in 2 hours. what is the unit rate of miles to hours
spayn [35]

Answer:

5.5:1

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help please this i will mark brainliest please
solniwko [45]

Step-by-step explanation:

please complete your question

6 0
3 years ago
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