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kherson [118]
3 years ago
9

Add 12xy − 3p2q2 + 7pq − 8r2 and 2xy + 3p2q2 − 8pq + 4r Please help me quick

Mathematics
2 answers:
Alex17521 [72]3 years ago
7 0
Ex 9.1, 3 (iii) - Chapter 9 Class 8 Algebraic Expressions and Identities ... Davneet Singh is a graduate from Indian Institute of Technology, ...
Whitepunk [10]3 years ago
3 0

Answer:

12xy - 3 {p}^{2}  {q}^{2}  + 7pq - 8 {r}^{2}  \\  +  \\ 2xy + 3 {p}^{2}  {q}^{2}  - 8pq + 4r \\  = 14xy - pq - 4r

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Which pair of points have equal x-coordinates
aniked [119]
The pair of points that are equal to x coordinates is (0,0)
8 0
4 years ago
Please show your work!!!!
viva [34]

Answer:

4√34

Step-by-step explanation:

Let the unknown side be y

y^2 = 20^2 + 12^2

y^2 = 400 + 144

y^2 = 544

Take the square root of both side

y = √544

y = √(16x34)

y = √16 x √34

y = 4√34

6 0
3 years ago
Identify the solutions to the quadratic equation 6x^2+x-1=0
tigry1 [53]

Answer:

1/3 and -1/2

Step-by-step explanation:

You can use the factoring method to identify the solutions of x

6x^2+x-1

2 numbers have to multiply to 6 and subtract to 1 because x is the same as 1x

So, you get 3x and 2x

since you know that -1x1 is -1 you will get

(3x-1)(2x+1)=0

Now, since (3x-1) and (2x+1) multiply to get 0, if either (3x-1) or (2x+1) is 0 the statement will be valid

3(1/3)-1=0

2(-1/2)+1=0

So, your answers are 1/3 and -1/2

5 0
2 years ago
A bag contains 10 marbles: 3 are green, 2 are red, and 5 are blue. Jose chooses a marble at random, and without putting it back,
Ludmilka [50]
We know that
g=3
r=2
b=5
total marbies=g+r+b------> 3+2+5----> 10

a) <span>probability that the first marble is red
P(red)=r/total marbies------------> 2/10-----> 1/5

b) </span><span>probability that the second marble is blue
in this case total marbles-------> 9
P(blue)=b/total marbles----------> 5/9

c) </span><span>the probability that the first marble is red and the second is blue
(1/5)*(5/9)=1/9

the answer is
1/9</span>
6 0
3 years ago
It is now twenty-five to four. What time will it be in one hour and forty-six minutes?
Dafna1 [17]

Answer:

5:21

Step-by-step explanation:

We know that currently (in the problem) it is 25 min before 4, or 3:35. When we add an hour to that (first part of the problem), we get 4:35. The way l like to continue from here is to take the second part (the 46 min) and just use part of it to round the hour off, and then add the other part to it.

From 4:35 to 5, we have 25 min

4.35 + 25 = 5

We subtract those 25 min from the 46 min, since we used them to round the hour off.

46 - 25 = 21

We have 21 min left, and now that the hour is rounded off, it's way easier to add minutes to it.

5 + .21 = 5.21.

So an hour and 46 min from 3:35 it will be 5:21. I hope this helps :)    

7 0
3 years ago
Read 2 more answers
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