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2 years ago

| 18 - (-13) | it’s subtracting integers

1 answer:

7 0

Answer: 31

How: If there are two negative signs like this, you would connect them together and make it into a addition sign where you then can add them.

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Is every multiple of 7 odd?

lana66690 [7]

No, 2 x 7 is 14 which is even.

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3 years ago

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What are the exact solutions of x2 + 5x + 1 = 0? (5 points)

Rus_ich [418]

Answer:

$x=\frac{-5\pm\sqrt{21} }{2}$

Step-by-step explanation:

We use the quadratic formula here which says for a quadratic equation $ax^2+bx+c=0$ .

$x= \frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Now in our case

$a=1\\b=5\\c=1$

so we have:

$x=\frac{-5\pm\sqrt{5^2-4(1)(1)} }{2(1)} =\frac{-5\pm\sqrt{21} }{2}$

$\boxed{x=\frac{-5\pm\sqrt{21} }{2} }$

Which are our solutions.

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3 years ago

Arturiano [62]

Answer:

We'll use the variable x to represent last year's price. First, we have to set up an equation:

We get this equation because $13.25 is 6% MORE than last year's price, meaning we need to add the original price to the increase. Next, we combine like terms and solve for x:

Last year's price was $12.50.

Step-by-step explanation:

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2 years ago

List 6 words that relate to area and explain why you chose/selected them.<br><br><br> Answer Please.

myrzilka [38]

I don’t understand your question

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2 years ago

Help please asap lol thanks

Yuliya22 [10]

Answer:

3.3

Step-by-step explanation:

Find all the numbers and find the mean

The x means that there are that many of each number

1 + 1 + 2 + 3 + 3 + 4 + 4+ 5 + 5 + 5

We have to divide that by the total amount of numbers present

33/10 = 3.3

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2 years ago

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