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love history [14]
3 years ago
9

Help please!!!!!!!!!!!!!!!! Asap

Mathematics
1 answer:
MrRa [10]3 years ago
4 0
Discriminant b^2-4ac =  (-9)^2 - 4*2*9  =  9
so there are 2 roots
because of the -9x and 9  they will both be positive
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2cm<br> 10<br> 2.5 cm<br> 2.5 cm<br> 2 cm<br> 3 cm<br> 6 cm<br> 5 cm
Studentka2010 [4]

Answer:

what do you want to do with this

Step-by-step explanation:

4 0
3 years ago
Geoff wants to make a 200 ml of 6% alcohol solution mixing a quantity of a 3% alcohol solution with a 8% alcohol solution. What
Marina86 [1]

Answer:

Volume of 3% alcohol = 80 ml

Volume of 8% alcohol = 120 ml

Step-by-step explanation:

Final volume of 6% alcohol solution = 200 ml

Let the volume of 3% alcohol volume = a ml

Therefore, volume of 8% alcohol = (200 - a) ml

Equation for the given situation will be,

3a + 8(200 - a) = 6×200

3a + 1600 - 8a = 1200

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5a = 400

a = 80 ml

Therefore, volume of 3% alcohol to be used = 80 ml

And volume of 8% alcohol to be used = (200 - 80) = 120 ml

8 0
3 years ago
ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.
lawyer [7]

Answer:

Answer is (b) The worker with 40 hours of training is paid $1400 per month

6 0
3 years ago
One angle of an octagon is 65º. The<br>others are equal to each other. Find them.​
r-ruslan [8.4K]

Answer:

42 1/7 degrees

Step-by-step explanation:

65+7x=360

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8 0
3 years ago
Read 2 more answers
What is the equation of the line that is parallel to the line y = -1/3x+4
RUDIKE [14]

Answer:

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - \frac{1}{3} x + 4 ← is i slope- intercept form

with slope m = - \frac{1}{3}

Parallel lines have equal slopes, thus

y = - \frac{1}{3} x + c ← is the partial equation

To find c substitute (6, 5) into the partial equation

5 = - 2 + c ⇒ c = 5 + 2 = 7

y = - \frac{1}{3} x + 7 ← equation of parallel line

8 0
3 years ago
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