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Ostrovityanka [42]
3 years ago
8

What is the value of the expression when a=-2, b=3, and c =-6

Mathematics
2 answers:
Alexxx [7]3 years ago
3 0

Answer:

-2x²+3x-6=0

Step-by-step explanation:

If it's quadratic :

Solution ax²+bx+c=0

-2x²+3x-6=0

erica [24]3 years ago
3 0

Answer:

-1

Step-by-step explanation:

for plato the answer is B: -1

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7 0
3 years ago
If you spend $60 per month on a cell phone plan, how much should you budget each week for that
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Answer: $15

There are about 4 weeks in a month, so if you spend $60 per month, you would spend 1/4 of that every week.

60/4= $15

8 0
3 years ago
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The side length of a square ice cube is claimed to be 1.0 inches, correct to within 0.001 inch. Use linear approximation to esti
Olenka [21]

Answer:

0.012

Step-by-step explanation:

Linear approximation says that,

f(x) \approx f(x_o)+f'(x_o)(x-x_o)

For a cube the surface area is 6x^2.

So the side is 1.0 inch in, the surface area is =6\times1^2 = 6 square inches.  

In Linear approximation means you ignore the term x_o^2 , if x_o is a small number, because then x_o^2 will be a very smalle number and that does not contribute much to the error.  

So the surface area is approximately,

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So here, x=1.001, x_o=0.001

The error in the area is approximately,

12 \times 0.001=0.012

So the error is 0.012.


3 0
3 years ago
Amanda has $5200 in a savings account that earns 4% annually. If the interest is not compounded, what is the value of her accoun
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4 0
4 years ago
Read 2 more answers
QUICK PLZZ!!! If m<ABD = 71°, what are m<ABC and m<DBC?​
suter [353]

Answer:

m<ABC = 45

m<DBC = 34°

Step-by-step explanation:

Given:

m<ABD = 79°

m<ABC = (8x - 3)°

m<DBC = (5x + 4)°

Step 1: Generate an equation to find the value of x

m<ABC + m<DBC = m<ABD (angle addition postulate)

(8x - 3) + (5x + 4) = 79

Solve for x

8x - 3 + 5x + 4 = 79

13x + 1 = 79

Subtract 1 from both sides

13x + 1 - 1 = 79 - 1

13x = 78

Divide both sides by 13

x = 6

Step 2: find m<ABC and m<DBC by plugging the value of x into the expression of each angle

m<ABC = (8x - 3)°

m<ABC = 8(6) - 3 = 48 - 3 = 45°

m<DBC = (5x + 4)°

m<DBC = 5(6) + 4 = 30 + 4 = 34°

Step-by-step explanation:

!!

7 0
3 years ago
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