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antiseptic1488 [7]
4 years ago
11

Determine the number of solutions for the quadratic function f(x) = -x^2 + 3x - 9.

Mathematics
1 answer:
Setler79 [48]4 years ago
7 0

Answer:

0

Step-by-step explanation:

Rewrite the equation as x^2-3x+9=0

find the determinant.

D = b^2-4ac = (-3)^2-4*1*9 <0

no solution

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Determine how long it will take an object to rotate through 20.0 revolutions at an angular velocity of 2.8 radians per second. U
Andreyy89
The conversion factor between radians and revolution as measures of angle is 2π rad is equal to 1 revolution. Converting the given angular velocity to rev/s,
                (2.8 rad) x (1 rev / 6.28 rad) = 70/157 revolution per second
Dividing the given angle, 20 rev by the velocity,
                                 (20 rev) / (70/157 rev/s) = 44 6/7 s
Thus, the answer is approximately 44.9 seconds. 
5 0
4 years ago
Find the value of the expression<br> qXS+r<br> for q = 2, r = 9, and s = 5.<br> Submit
brilliants [131]

Answer:

19

Step-by-step explanation:

Substitute the values and use the order of operations to find the correct value.

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19

6 0
3 years ago
In a bag, Gary has 3 red marbles, 4 blue marbles, 7 yellow marbles, 5 green marbles, 6 purple marbles, and 8 clear marbles. What
miskamm [114]

Answer:

2220

Step-by-step explanation:

gcd of all numbers

3,4,7,5,6,8

2 = 3,2,7,5,3,4

2 = 3,1,7,6,3,2

2 = 3,1,7,5,3,1

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6 0
2 years ago
An electronics store has marked the price of a certain game at 230% of their cost. If their cost is $15.00, how much does the ga
Ber [7]
I multiplied $15 by 230% and then added my answer(which was 34.5) because subtracting it wasn't an option and got $49.50
3 0
3 years ago
Read 2 more answers
I need help ASAP. Thank you
Fed [463]
Here is the link to the graph. You can scale it and tweak it.
https://www.desmos.com/calculator/mawkflj9ws

Hope this helped!


8 0
3 years ago
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