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Amiraneli [1.4K]
3 years ago
12

Please help me answer this. Its for a test. Tyyyy 2x^2+13x-7=0

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
8 0

Answer:

(x+7) (2x-1) =0

Step-by-step explanation:

2x^2 + 13x - 7 = 0

(x+7) (2x -1) =0

2x^2 - x + 14x - 7 = 0

2x^2 +13x - 7 = 0

Hope this helps!!

allsm [11]3 years ago
4 0

Answer:

Step-by-step explanation:

(2x + 7) (x - 1) = 0

x = -7/2 and x = 1

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The answer using Pythagorean theorem
OverLord2011 [107]

Answer: 12.32 is the answer.


Step-by-step explanation: Using the pythagorean thereom we can solve this by using the formula A^2+B^2=C^2.

We substitute in the values,

17^2+B^2=21^2.

Now we simplify.

289+B^2=441

We subtract the 289 from both sides,

B^2=152                                                                                                                                                            

Now we use square root to find the answer.

12.32 is the answer.

Hope this helps!


5 0
3 years ago
The probability that a traffic light will be green is 40%. If you pass through 3 lights on your way to the store, what is the pr
larisa [96]

Answer:

0.216

Step-by-step explanation:

If the probability of green, P(green) is 40%, the probability of red, P(red) is 60%.

The probability of a light being red is not affected by the colour of the previous light, so at each of the 3 lights, the probability of red is always 60%.

To find the probability that all three lights will be red, multiply the three probabilities together. (Convert them to decimals first).

0.6 x 0.6 x 0.6 = 0.216

7 0
3 years ago
PLS SOLVE ASAP I RLLY NEED THIS SHOW WORK ☹☹☹
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Answer:

63=7  80=8 52=7 112=10 864=29 396=19 800=28 7200=84

Step-by-step explanation:

now all you have to do is find factors which shouldn't be that hard

4 0
3 years ago
What is the value of x in the equation -6 + x = -1?<br> -5<br> -7<br> 7<br> 5
Naya [18.7K]
D) 5

Mark if correct!
4 0
3 years ago
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This triangle is a multiple of one of the triples listed here. What is the hypotenuse?
stiv31 [10]

Answer:

50 units

Step-by-step explanation:

you use Pythagorean-theorem  which means A^2+B^2 =C^2

It does not matter the order of A and B because it is adding. But C is the hypotenuse.

If we plug in the # this is what it looks like...

14^2 +48^2=C^2

        or

48^2+14^2=C^2

14*14= 196

48*48=2,304

then you add

196+2,304=C^2

2,500= C^2

and you can use a calculator for this part you do 2,500

with the 2,500 you use the sign as in the picture and it gives you...

50

which means 50*50 = 2,500

5 0
3 years ago
Read 2 more answers
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