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Art [367]
2 years ago
9

Solve for x for brainiest

Mathematics
1 answer:
saul85 [17]2 years ago
7 0
Lovee the nails!!!


my guess is x=28

hope this helps!!! :))
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When using the quadratic formula we call the part under that radical the discriminant this part of the formula can be used to he
blondinia [14]

Answer:

A, B, and C

Step-by-step explanation:

The discriminant is denoted by b^2 - 4ac, and it can give us information about the roots of the quadratic equation.

It tells us that if:

- b^2 - 4ac < 0 , then there are 0 real solutions; they're all imaginary (involving the letter i, which is the square root of -1)

- b^2 - 4ac = 0 , then there is 1 real solution; this 1 solution has a multiplicity of 2 because the roots of the quadratic are the same number

- b^2 - 4ac > 0 , then there are 2 real solutions; there are no imaginary solutions

Looking at the possible choices, we see that all of A (A, I'm assuming you meant to write "if the discriminant is zero there is one real solution"), B, and C reflect the above properties.

Thus, they're all right.

3 0
3 years ago
Read 2 more answers
Please help me with question 5
Fantom [35]
Use the left and right triangles. (the two smaller ones -- ACD and BCD)
By similar triangles ACD is similar to BCD
on the left AD/CD is one ratio
On the right CD/DB is the other. These two ratios are equal because they are corresponding parts.

AD / CD = CD / DB
AD = 3
DB = 12
CD = ??
Substitute.
3/CD = CD/12 Cross multiply
36 = CD^2
sqrt(36) = sqrt(CD^2)
CD = 6 <<<<==== Answer.
A <<<<====Answer.
 
7 0
3 years ago
If BY = 6, YC = 10, AX = 18, then XC = <br> a: 10.8 <br> b:5 <br> c:30 <br> d:48
vampirchik [111]
To answer this item, we assume that the topic is in similar polygons such that the ratio of the corresponding sides should be equal. In this item,

    BY/YC = AX/XC

Substituting the known values,

    6/10 = 18/XC

The value of XC from the equation is 30. The answer is letter C. 
3 0
3 years ago
Read 2 more answers
|h-3|&lt;5 how do I solve using inequalities
Readme [11.4K]

You can find the approximate value of h in this the same way you could with an algebraic expression.

h - 3 < 5

+3

h < 8

8 0
3 years ago
If the domain of a function is [1,10), select a point that could be included within the function.
bazaltina [42]
Answer: (1,4)

Explanation: The domain looks at the x coordinates and (1,4) is the only x coordinate in the range given (due to the bracket)
6 0
3 years ago
Read 2 more answers
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