3 years ago

Find the discriminant and describe the roots for this equation x^2+3x+8=0

Mathematics

1 answer:

Alla [95]3 years ago

8 0

Answer:

Step-by-step explanation:

The discriminant of a quadratic equation is b² - 4ac.

Here, a = 1, b = 3 and c = 8, and so the value of the discriminant is:

3² - 4(1)(8) = 9 - 32 = -23

The discriminant is -23 in this case.

A negative discriminant indicates that the roots will be complex.

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Harry and Jack raised roses and petunias in their garden. If 15 percent of the flowers were roses and there were 120 roses, how

guapka [62]

Answer:

138 flowers

120+(120×(15%))= 138

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3 years ago

If the diameter of a circle is 19.3, what is the circumference?

vlabodo [156]

Answer:

60.6

Step-by-step explanation:

The formula for finding the circumference of a circle is C = 2πr

C is circumference, π is pi (we'll just us 3.14 here), and r is radius.

The radius is found by dividing the diameter in half.

19.3/2=9.65

So the equation should look like this:

C = 2(3.14)(9.65)

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4 years ago

Simplify the following expression: <br> -3y+15-(x+2)+5y-13

Roman55 [17]

Answer:

2y-x is the answer

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3 years ago

Read 2 more answers

What's the answer to x÷6=-13

Mariulka [41]

To find this answer :

Step 1: Simplify both sides of the equation.

1/6x=-13

Step 2: Multiply both sides by 6.

6*(1/6x)=(6)*(-13)

You will get x=-78.

8 0

4 years ago

Liza put some books on a shelf. The list below shows the mass of each book in ounces.

natka813 [3]

Answer:

Step-by-step explanation:

Order the numbers.

5, 5, 5, 8, 8, 9, 9

The total numbers in the list is 7.

7/2 is between 3 to 4

Choose the middle number in ordered list:

5, 5, 5, 8, 8, 9, 9

answers is 8

8 0

3 years ago