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liraira [26]
3 years ago
7

Calculate the x-intercepts of the quadratic y=9xsquared+3x

Mathematics
1 answer:
Dovator [93]3 years ago
3 0
To find the x-intercept, put y=0

9x^2 +3x=0
3x(3x+1)=0

x=0 or x=-1/3
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What is the greatest common factor of 90, 126, 180 and 990?
mylen [45]

9514 1404 393

Answer:

  18

Step-by-step explanation:

90 = 18·5

126 = 18·7

180 = 18·10

990 = 18·55

The greatest common factor of these numbers is 18.

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<em>Comment on the GCF</em>

It can be useful to know Euclid's algorithm for finding the GCF:

  1. Determine the remainder from dividing the larger number by the smaller.
  2. If the remainder is zero, the smaller number is the GCF. If the remainder is non-zero, use it to replace the larger number and repeat from step 1.

For example, 126 mod 90 = 36; 90 mod 36 = 18; 36 mod 18 = 0, so 18 is the GCF of 126 and 90. (The modulo function 'mod' returns the remainder from division.)

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3 years ago
Find the value of 2a squared + 5b squared when a = -6 and b =2
jenyasd209 [6]

92

given 2a² + 5b²

substitute given values for a and b into the expression

2(- 6)² + 5(2)² = (2 × 36 ) + (5 × 4) = 72 + 20 = 92


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F(t) = -2t + 5 f() = 13
fomenos

Answer:

I don't know what the question is but...

Step-by-step explanation:

-2t+5-13= -2t-8

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-2t+5*13= -2t+65

-2t+5/13= -26t-5/13

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