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dezoksy [38]
2 years ago
14

PLEASE HELP!!!!!!!!!!!!

Mathematics
2 answers:
andrew11 [14]2 years ago
7 0
The answer is b
hope that helps:)
daser333 [38]2 years ago
6 0

Answer:

b

Step-by-step explanation:

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Suppose you can factor x^2 +bx +c as (x+p)(x+q) . If c<0, what could be the possible values of p and q?
Anna11 [10]
Ans: Option A

Explanation:
Let's solve it smartly!
Given expression: x^{2} + bx +c --- (A)
Factors: (x+p)(x+q)
Condition: c<0
Now let us expand (x+p)(x+q):
=> x^{2} + (p+q)x + pq  --- (B)

By comparing (B) with (A), we can say that:
pq = c --- (C)

Now, as the condition says, c<0, it means either p or q is negative. Both cannot be positive or both cannot be negative.

1) If p>0, q>0, it means c>0 since (+p)(+q) = (+c)(according to equation (C)). Condition is not met.
Hence, option B and D are wrong.

2) If p<0, q<0 it means c>=0 since (-p)(-q) = (+c)(according to equation (C)). Condition is not met.
Hence option C is out as well.

We are left with Option A:p<0, q>0 it means c<0 since (-p)(+q) = (-c)(according to equation (C)).
Condition is MET!
Hence,
Ans: Option A: p= -3, q= 7
4 0
3 years ago
Read 2 more answers
What’s the value of x?
tigry1 [53]

Answer:

x=7

Step-by-step explanation:

7 0
3 years ago
6x-12=2x-6 <br><br> Also,how do you check your answer?
taurus [48]
6x-12 = 2x-6

get like terms on the same side by adding/subtracting.

6x - 12 = 2x - 6
+ 12, -2x on both sides

6x - 2x = -6 + 12

4x = 6

divide all by 4

x = 1.5

to check your answer, plug in 1.5 for x and see if they are equal to one another.

6(1.5) - 12 = -3
2(1.5) - 6 = -3
7 0
3 years ago
The scale on a map is 1 : 30 000 What is the actual distance represented by 1 centimetre?
Amiraneli [1.4K]

Answer:

300\ m

Step-by-step explanation:

we know that

The scale on a map is 1 : 30,000

we can say that

1\ cm on a map is equal to 30,000\ cm in the actual

so

Convert centimeters to meters

Remember that

1\ m=100\ cm

30,000\ cm=30,000/100=300\ m

8 0
3 years ago
What are the solutions to the quadractic equation 40-x2=0​
Sonja [21]

Answer: x=2 √ 10 , -2 √ 10

3 0
3 years ago
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