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likoan [24]
3 years ago
11

Find a numerical value “a” and “b” in the figure below

Mathematics
1 answer:
Nady [450]3 years ago
5 0

Check the picture below.

make sure your calculator is in Degree mode.

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What is the vertex of the equation, y= -3x^2+2x-7?
Genrish500 [490]

A

Given a quadratic in standard form : y = ax² + bx + c ( a ≠ 0 ), then

The x-coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

y = - 3x² + 2x - 7 is in standard form

with a = - 3, b = 2 and c = - 7, hence

x_{vertex} = - \frac{2}{-6} = \frac{1}{3}

Substitute this value into the equation for y-coordinate

y = - 3 (\frac{1}{3})² + 2 ( \frac{1}{3}) - 7

  = - \frac{1}{3} + \frac{2}{3} - \frac{21}{3} = - \frac{20}{3}

vertex = ( \frac{1}{3}, - \frac{20}{3}) → A



4 0
3 years ago
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Answer:

ASA test will come

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side between angles (common side)

6 0
3 years ago
Simplify 8.9 - 1.4x + (-6.5x) + 3.4
lesya692 [45]

Answer:

12.3 - 7.9x

Step-by-step explanation:

8.9 - 1.4x + (-6.5) +3.4

12.3 - 1.4x - 6.5=

12.3 - 7.9x

8 0
2 years ago
A self-serve car wash charges $5.81 to use its facilities, plus an additional $0.77 for each minute the customer is at the self-
Zigmanuir [339]

Answer:

C. $11.20.

Step-by-step explanation: Just times the minutes by the $0.77 cents then plus the $5.81 to the answer getting your final answer.

3 0
3 years ago
Abi invest€500 for 4 years in a bank account pays simple interest at a rate of 2.3% per year work out the total amount of the in
timofeeve [1]

Answer:

46euros

Step-by-step explanation:

Formula- I=P*R/100*T

P=principal amount    R=rate    T=time

Compute the values given in the question to this formula

So, it would be-

I= 500*0.023*4

I= 46euros

And that's all!

7 0
3 years ago
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