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vodka [1.7K]
2 years ago
10

What is the discriminant of the quadratic equation -x^2-x-8=0?

Mathematics
1 answer:
Nat2105 [25]2 years ago
8 0

Answer:

-31

Step-by-step explanation:

See Image Below

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Which expressions are equivalent to, 8m + 6 *
guajiro [1.7K]

Answer:

4m + 4m + 6

3+3+5+3

10m+12+(-2m)-6

Step-by-step explanation:

Welcome

4 0
3 years ago
) Elise has put 5 cans (all of the same size) on her kitchen counter; 2 cans of vegetables, 2 cans of soup , and 1 can of peache
Anvisha [2.4K]

Answer:

0.7 = 70%.

Step-by-step explanation:

There are 5 cans, and she will pick 2, so the number of possibilities that she can pick 2 cans is a combination of 5 choose 2:

C(5,2) = 5!(3!*2!) = 5*4/2 = 10

To find how many possibilities there are with at least 1 can of soup, we can find the number of groups that include no cans of soup, and then see how many possibilities complete the total 10:

There are 3 "no-soup" cans, so the number of possibilities is a combination of 3 choose 2:

C(3,2) = 3!/2! = 3

So, there are 3 possibilities that have no cans of soup, so the number of possibilities that have at least 1 can of soup is 10 - 3 = 7

Then, the probability is 7 / 10 = 0.7 = 70%.

4 0
3 years ago
Find the base <br>90% of what number is 27?​
DanielleElmas [232]

Answer:

30 is the total number..p

5 0
3 years ago
Are they unique more than one or no triangle
Tanya [424]
The measures of the angles of a triangle add to 180.

45 + 45 + 90 = 180
The measures of these three angles do add to 180, ,so there is at least one triangle with these angle measures.
Using AA triangle similarity, any triangle with the same angle measures will be similar.

From the figure you already see two triangles with angles 45-45-90. There is an infinite number of triangles with those angle measures.
8 0
3 years ago
Consider the matrices -2 -1 1 4 1 A = B = 4 -2 4 -2 -2 4 -2 1 -1 (a) Verify that they are diagonalizable and that they commute.
Phoenix [80]

Answer:

Explanation to answers are shown in the attachment

Step-by-step explanation:

This is a long solution but the detailed step by step and appropriate mathematical manipulation has been done as shown in the attachment.

6 0
3 years ago
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