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lidiya [134]
2 years ago
10

ILL GIVE BRAINLIEST

Mathematics
1 answer:
weqwewe [10]2 years ago
5 0

Answer:

See below

Step-by-step explanation:

I'll provide an example to help you. Let's say we were solving x^2+5x-7=0 and we wanted to factor the quadratic on the left side. We can't do that because the factors of -7 don't add up to 5. So we'd have to use the quadratic formula. The quadratic formula is essentially the last resort that will solve all quadratic equations, so it could be seen as a preferred method. But, unless you can factor the quadratic, it's much easier to solve.

Now let's do another one. x^2+5x+6=0 for example can be written as (x+2)(x+3)=0 and we can easily get x=-2 and x=-3 as solutions since plugging them into the factors would produce 0 (from the Zero Product Property). If we used the quadratic formula, it would take more time to plug in the variables and solve when we can just simply factor.

Hopefully, this explanation helps you to think of your discussion post!

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Someone please help me out i don´t understand this question <br> ill give you 21 points
suter [353]

Answer:

0.67

Step-by-step explanation:

Formula: k = y/x

k = 2/3

k = 0.66666666666

k = 4/6

k= 0.66666666666

k = 6/9

k = 0.66666666666

k = 8/12

Round 0.67

Hence, answer = 0.67

[RevyBreeze]

8 0
2 years ago
Read 2 more answers
Lia has a dog and a cat. Together, the pets weigh 24 pounds. The dog weighs 2 times as much as the cat.
telo118 [61]

Answer:

The dog weighs 16 pounds, while the cat weighs 8 pounds

Step-by-step explanation:

Let's call the weight of the dog d, and the weight of the cat c.

d+c=24

d=2c

Substitute the second equation into the first:

(2c)+c=24

3c=24

c=8

d=24-8=16

Hope this helps!

3 0
3 years ago
If line n bisects segment CE, find the positive value of x.<br><br> A.6<br> B.10<br> C.15<br> D.9
givi [52]

9514 1404 393

Answer:

  D.  9

Step-by-step explanation:

The segment lengths are equal, so ...

  x^2 = 90-x

  x^2 +x -90 = 0 . . . . . . add x-90 to put in standard form

  (x +10)(x -9) = 0 . . . . . factor

The solutions are the values of x that make the factors zero: -10, 9.

The positive value of x is 9.

8 0
3 years ago
Read 2 more answers
EASY QUICK POINTS!!!! Find the altitude of an equilateral triangle if each side of the triangle has the length of 6 meters!!!
KonstantinChe [14]

Answer:

5.20  to the nearest hundredth.

Step-by-step explanation:

The altitude line bisects the base of the triangle to form 2 right  angled triangles with hypotenuse = 6 and the base = 3.

So,  by the Pythagoras theorem the altitude is  calculated as follows:

6^2 = 3^2 + x^2

x^2 = 36 - 9 = 27

x = √27

= 5.20  to the nearest hundredth.

7 0
3 years ago
Use exponents to write 81 three different ways.
nlexa [21]
Answer:.81 , 81%,81/100
5 0
2 years ago
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