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Luden [163]
3 years ago
11

What are all the solutions of x2 + 3x - 4 = 0? 3 ооооооо DONE

Mathematics
1 answer:
Allisa [31]3 years ago
4 0

Answer:

x = -4, x = 1

Step-by-step explanation:

Now I do not know why you said done, but just saying, if you are done with a question, you should delete it. Now I am just going to assume you knew this and move on with the solution of the problem.

When you factor this equation, you will get (x+4)(x-1).

You can then solve for x using zero product property. The first root is -4 and the second root is 1.

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-4(x+5)=-4x-30 solution
luda_lava [24]

Answer:

no solution

Step-by-step explanation:

-4(x+5)=-4x-30

-4x-20=-4x+30

no solution

x cancel

7 0
3 years ago
for these scenarios, write equations or inequalities that reflect the relationship. The minimum number of hours required to rent
IgorLugansk [536]

Answer:

100 + 35x \geq 280 is the inequality that reflect the relationship.

Step-by-step explanation:

Given:

Charge for rental =   $100

Additional charge =  $ 35

Minimum amount that can be spent =  $280

To Find:

equations or inequalities that reflect the relationship = ?

Solution:

Let x be the minimum number of hours

then the charge will  be

100  + (number of hours)(additional cost per hour)

That is

100 + 35x

Now the minimum charge amount is $280 So, The charge can be 280 or more than 280

100 + 35x \geq 280

3 0
3 years ago
How many dots are there at 100 minutes?<br><br> Please show work!<br><br> Thanks!
dusya [7]

500 dots: this is because 1 minute is 5 dots. So, 5×100=500!

5 0
3 years ago
Read 2 more answers
There is a bag filled with 5 blue and 6 red marbles.
Afina-wow [57]

Answer:

The probability of getting two of the same color is 61/121 or about 50.41%.

Step-by-step explanation:

The bag is filled with five blue marbles and six red marbles.

And we want to find the probability of getting two of the same color.

If we're getting two of the same color, this means that we are either getting Red - Red or Blue - Blue.

In other words, we can find the independent probability of each case and add the probabilities together*.

The probability of getting a red marble first is:

\displaystyle P\left(\text{Red}\right)=\frac{6}{11}

Since the marble is replaced, the probability of getting another red is: \displaystyle P\left(\text{Red, Red}\right)=\frac{6}{11}\cdot \frac{6}{11}=\frac{36}{121}

The probability of getting a blue marble first is:

\displaystyle P\left(\text{Blue}\right)=\frac{5}{11}

And the probability of getting another blue is:

\displaystyle P\left(\text{Blue, Blue}\right)=\frac{5}{11}\cdot \frac{5}{11}=\frac{25}{121}

So, the probability of getting two of the same color is:

\displaystyle P(\text{Same})=\frac{36}{121}+\frac{25}{121}=\frac{61}{121}\approx50.41\%

*Note:

We can only add the probabilities together because the event is mutually exclusive. That is, a red marble is a red marble and a blue marble is a blue marble: a marble cannot be both red and blue simultaneously.

4 0
3 years ago
Please help. Question #12
Ira Lisetskai [31]

Answer:

Step-by-step explanation:

4 0
3 years ago
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