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Blababa [14]
2 years ago
7

How to solve this?? (-4)-(-8)+(-4)

Mathematics
2 answers:
IRISSAK [1]2 years ago
7 0
(-4)-(-8)+(-4)
-4 + 8 - 4
4 - 4
=0

• 2 minus signs make a plus sign
kirill115 [55]2 years ago
6 0
(-4) - (- 8) + (- 4)
- 4 - (- 8) + (- 4)
- 4 + 8 + (- 4 )
- 4 + 8 - 4
= 0
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How many extraneous solutions does the equation below have?
FrozenT [24]

<u>Answer</u>

0


<u>Explanation</u>

(2m)/(2m+3)-(2m)/(2m-3)=1

Simplifying the left hand first

(2m)/(2m+3)-(2m)/(2m-3) = {2m(2m-3) - 2m(2m+3)}/(4m²-9)

                                        (4m²-6m-4m²-6m)/(4m²-9)

                                         = (-12m) / (4m²-9)

Now this equet to 1

(-12m) / (4m²-9) = 1

-12m =  4m²-9

4m²+ 12m -9 =0 ⇒⇒⇒ This is a quadratic equation that has 2 real solutions.

4m²+ 12m -9 =0

m² + 3m + (3/2)²= 9/4 + 9/4

(m + 3/2)² = 18/4

m = √18/2 - 3/2                or m = -√18/2 - 3/2

    = 0.621                                       = -3.621

So we can say that the equation has NO extraneous solutions.

Answer = 0

8 0
3 years ago
Read 2 more answers
A car dealership offers two types of discount.
bagirrra123 [75]

Answer:

The customer would pay $19,324 for Car S.

Step-by-step explanation:

Take Car S

$22,860 x .1 (ten percent) = $2,286

$22,860 (original car price) - $2,286 (minus the 10%) = $20,574 (new car price)

$20,574 - rebate of $1,250 = $19,324

The customer would pay $19,324 for Car S.

All other do not come out but this one does, so that is the only option for this!

Hope i could help

Please mark me

7 0
3 years ago
Read 2 more answers
Does anybody have a proper answer?
NikAS [45]
Hello,

x=18

Radius=√(7²+9²)=√130

(2*√130)²=x²+14²==>x²=√324=18
4 0
4 years ago
Rachel harvested half as many watermelons as strawberries. If there were 28 watermelons, how many strawberries did she get?
Misha Larkins [42]

Answer:

56

Step-by-step explanation:

If there are 2x as many strawberries than watermelons and there is 28 watermelons....than.

28 x 2 = 56

56 strawberries.

8 0
3 years ago
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A) The failure rate in obtaining car license in every test held by Road Transport
sashaice [31]

Answer:

Step-by-step explanation:

5 0
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