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Oksanka [162]
2 years ago
10

Find

Mathematics
1 answer:
solong [7]2 years ago
5 0
Some nicotine contained I have zero
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Solve the quadratic equation 3x^2 - 9x + 1 = 0 Give answer to 3 significant figures
Orlov [11]

Answer:

Either, (9+√69)/6 or (9-√69)/6

Step wise:

3x²-9x+1=0-------------------(i)

comparing equation onw with (ax²+bx+c=0), we get,

a=3, b=-9, c=1

now,

using Quadratic Formula,

(-b±√b²-4ac)/2a=x

{-(-9)±√(-9)²-4.3.1}/2.3=x

(9±√81-12)/6=x

(9±√69)/6=x

Taking +(ve) sign                   Taking -(ve) sign

(9+√69)/6=0                           (9-√69)/6=0

∴(9+√69)/6=0                         ∴(9-√69)/6=0

[∵They cannot be further solved]

6 0
3 years ago
A clothing store is offering 40% off of any sale merchandise. Chester's subtotal is $128.00. What is his total after the discoun
S_A_V [24]

Answer:

should be 76.8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
two angles are supplementary of the sum is 180. the larger angle measures four degrees more than sevem times the measure of a sm
Aleksandr [31]

Answer:

22 and 158

Step-by-step explanation:

Supplementary angles add to 180. This is means there is a small and large angle. Adding together, they make 180.

  • "the larger angle measures four degrees more than seven times the measure of a smaller angle" is represented as 7x+4.
  • "x represents the measure of the smaller angle" is represented as x.

x + 7x+4 =180

8x+4=180

8x=176

x= 22

This is the measure of the smaller angle. The larger angle is 7(22)+4 = 158

5 0
3 years ago
If P(-4,-2) and Q(1, -3) represent points in a coordinate
Artyom0805 [142]

Answer:

the answer is (6, -4)

Step-by-step explanation:

4 0
3 years ago
X³+y³+z³=k, for each k from 1 to 100
masya89 [10]

Answer:

hotdog

Step-by-step explanation:

hhhhhhhhhhhhhhhhhhoooooooooooootttttttttdddddddoooooooooggggggggg

7 0
2 years ago
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