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eduard
2 years ago
10

HELP find the a,b,c of this table​

Mathematics
1 answer:
fenix001 [56]2 years ago
6 0

Answer:

<em>a = b = 1 , c = - 8</em>

Step-by-step explanation:

ax² + bx + c = y

( - 5 )² a - 5b + c = 12

<em>c = - 8</em>

3² a + 3b + c = 4

25a - 5b - 8 = 12 ⇔ 25a - 5b = 20 ⇔ 5a - b = 4 ........ <em>(1)</em>

9a + 3b - 8 = 4 ⇔ 9a + 3b = 12 ⇔ 3a + b = 4 .......... <em>(2)</em>

<em>(1)</em> + <em>(2)</em>

8a = 8 ; <em>a = 1</em>

<em>b = 1</em>

<em>y = x² + x - 8</em>

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Work out 12+8÷(9-5) 0.018÷0.06 Express as single fraction 5/7÷2/5
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Step-by-step explanation:

I don't know if the first set of numbers is all in one set, but I'll do my best to give you an answer.

Really all you need to do is use PEMDAS for the first question.

(Parentheses, exponents, multiply, divide, add, subtract. In that order)

1 2 + 8 \div (9 - 5) \\ 12 + 8 \div 4 \\ 12 + 2 \\ 14

Then to simplify that fraction next to it, notice that 0.018 is 3x 0.06.

that's a 3:1 ratio, so it ends up simplifying to this:

\frac{3}{1}

Lastly, to solve the division of that fraction. If you divide by a fraction, you multiply whatever it's dividing by its inverse.

So...

\frac{5}{7}  \div  \frac{2}{5}  \\  \frac{5}{7}  \times  \frac{5}{2}  \\  \frac{25}{14}

7 0
3 years ago
Does anyone know the answer to this?
pishuonlain [190]

Answer:

Rectangle

Step-by-step explanation:

(hope this helps!!)

8 0
3 years ago
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Jake is y years old. His grandma is 6 times his age. His cousin is 5 years older than him. a. Write an expression for each of th
gtnhenbr [62]

Answer:

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3 years ago
I need help , I don’t understand
Elan Coil [88]

Answer:

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Mode- 6

Step-by-step explanation:

1. Place the numbers in order from smallest to biggest.

0,2,3,4,5,6,6,6,7,8,8

Finding the mean (average)- add all the numbers in thd data set together. Which would be 55. Then, you would divide that number by the number of the numbers in the data set. (11 numbers.) 55/11. 55 divided by 11 is 5, so that is your answer.

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Finding the mode- This one is easy. It's simply the number that repeats itself the most. In this case it would be 6 because it repeats itself 3 times.

4 0
3 years ago
What’s the answer ???<br><br> (ONLY ANSWER IF YOU KNOW)
just olya [345]
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Simplified Expressions:
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The exponents of expression #1 are greater than the exponents of expression #2
5 0
3 years ago
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