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Natali [406]
4 years ago
12

-7t^2 – 2t + 9 = 0 pls solve using any method!

Mathematics
1 answer:
Aneli [31]4 years ago
8 0
-7t^2 - 2t + 9 = 0\\
-7t^2+7t-9t+9=0\\
-7t(t-1)-9(t-1)=0\\
-(7t+9)(t-1)=0\\
t=-\dfrac{9}{7} \vee t=1
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x= 1, 2, 3, 4, 5. y=11\4, 25\4, 39\4, 53\4, 67\4. what equation relates y to x in the values x and y?
larisa86 [58]
(1,11/4)(2,25/4)
slope = (25/4 - 11/4) / (2 - 1) = (14/4) / 1 = 14/4 = 7/2

y = mx + b
slope(m) = 7/2
(1,11/4)...x = 1 and y = 11/4
now we sub and find b, the y int
11/4 = 7/2(1) + b
11/4 = 7/2 + b
11/4 - 7/2 = b
11/4 - 14/4 = b
-3/4 = b

so ur equation is : y = 7/2x - 3/4
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3 years ago
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Klio2033 [76]

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8 0
3 years ago
The quotient of 50 and 5 subtracted from 20 (move numbers and symbols to the line to show the phrase as a numerical expression)
Bas_tet [7]

Answer:

The expression is 20 - 50/5

Step-by-step explanation:

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Now we subtract this FROM 20, then we have the number 20, and we subtract 50/5 from it, this is written as:

20 - 50/5

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