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saw5 [17]
3 years ago
5

QUESTION THREE 30 MARKS3a) multiply x + y by x - y​

Mathematics
2 answers:
Rainbow [258]3 years ago
6 0

Answer:

x²+xy+yx-y²

Step-by-step explanation:

(x+y)(x-y)

x times x =x²

x times y= xy

y times x=yx

y times y=y²

Fudgin [204]3 years ago
6 0

Step-by-step explanation:

It's x*x+x*y-x*y-y*y => x^2 +xy - xy- y^2 = x^2-y^2

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What integer is equivalent to 9 and 3 halves
sweet [91]

Answer:

6 is the integer which is equivalent to 9 and 3 halves

Step-by-step explanation:

we have to find the integer which is equivalent to 9 and 3 halves

Rule of halves means the restatement of meaning of median. Therefore, we have to find the median of these two integers 9 and 3.

Median of 9 and 3 is \frac{9+3}{2}=\frac{12}{2}=6

Hence, 6 is the integer which is equivalent to 9 and 3 halves

7 0
3 years ago
What kind of angle is 2X?
andrezito [222]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
A runner is 6/8 mile from the finish line. If she can travel 3/8 mile per minute, how long will it take her to finish the race?
Klio2033 [76]

Answer:

it will take her 40 seconds to finish the race.

3/8 per minute, would make it 1/8 every 20 seconds. since she only has 2/8 of a mile left to go, 20 seconds +20 seconds = 40 seconds

(if you needed how long it takes her to run the whole race, it's 2 minutes 40 seconds, which would make her the fastest mile runner in the world)

Step-by-step explanation:

I hope this helps :)

6 0
3 years ago
OPTIONS<br> Pack of 24 for $1.68<br> UNIT PRICE<br> $<br> per<br> Pack of 12 for $1.08<br> $<br> per
notsponge [240]
Pack of 6 for $0.34 there u go
3 0
3 years ago
Find the product and simplify. (3c-5) ^2
RSB [31]

Answer:

9c² -30c + 25

Step-by-step explanation:

Perfect square trinomial: (a - b)² = a² - 2ab + b²

(3c - 5)²

(3c)² -2(3c * 5) + 5²

9c² -2(15c) + 5²

9c² -30c + 25

Final answer: 9c² -30c + 25

Hope this helps!

7 0
2 years ago
Read 2 more answers
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