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Tasya [4]
3 years ago
9

Which of the following is a quadratic equation?

Mathematics
1 answer:
alex41 [277]3 years ago
4 0
Answer is C
Hope that helps
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5. Molly has 5 sticks of lengths 2,4,6,8, and 10 inches. Using three sticks at 1 point
sergeinik [125]

Answer:

4, 6 & 8  /   4, 8 & 10 ,  /  6, 8 & 10

So 3 triangles

Step-by-step explanation:

The longest side of a triangle has to be greater than the difference of the other 2 sides, and less than the sum of the other 2.

diff < long side < sum

Not equal to, less than & greater than.

6 0
3 years ago
Solve the system of equations by substitution. What is the solution for x?
insens350 [35]

Answer:

x=0.875

Step-by-step explanation:

2×+y=1

y=0.5

4×+2y=-1

4×+2.5=-1

1+2.5=4x

3.5=4x

x=0.875

5 0
3 years ago
The table below shows the outputs y for different inputs x:
Nutka1998 [239]
         Part A: The table does not represent y as a function of x. We can not input 1 and get 4 and 2 as outputs ( or input 3 and get 12 and 6 as outputs ).
         Part B : f (120) is a cost for renting a peddleboat for 120 hours;
         f (120) = 20 + 10 * 120 = 20 + 1,200 = 1,220.
3 0
3 years ago
The mean salary of people living in a certain city is $37500 with a standard deviation of $1561. a sample of 33 people is select
Murrr4er [49]
The probability is 0.9671.

The z-score for this is given by

z = (x - μ)/(σ/√n)
z = (38000-37500)/(1561/(√33)) = 1.84.

Using a z-table (http://www.z-table.com) we see that the area under the curve to the left of, less than, this is 0.9671.
8 0
3 years ago
A square name tag has sides that are 5 centimeters long. What is the name tag's area?
katen-ka-za [31]

Answer:

25

Step-by-step explanation:

To get the area you multiply length and width. The length and width are both 5. 5 times 5 equals 25.

Hope this helped!

6 0
3 years ago
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