3 years ago

Evaluate 9y^1 - y^0 if y = -8

Mathematics

1 answer:

Xelga [282]3 years ago

4 0

Answer:

9y^2-1 i think

Step-by-step explanation:

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What is the solution to y=6x+25 y=12x-9

prisoha [69]

Answer:

x=17/3, y=59. (17/3, 59).

Step-by-step explanation:

y=6x+25

y=12x-9

--------------

6x+25=12x-9

12x-6x-9=25

6x-9=25

6x=25+9

6x=34

x=34/6=17/3

y=12(17/3)-9=4*17-9=68-9=59

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2 years ago

A is the point with coordinates (5,9) B is the point with coordinates (d,17) The line AB has gradient 4 Work out the value of d

yarga [219]

Answer:

d=9

Step-by-step explanation:

The gradient of straight line is given by

$m=\frac{y_2-y_1}{x_2-x_1}$

Plug in our knows

$4=\frac{17-9}{d-5} \text{ Solve for d} \\\\4(d-5)=8\\\\d-5=4\\d=9$

3 0

2 years ago

Factorise fully 9b-3b²

Schach [20]

3b(3-b) is the answer

Step by step explanation : take out the most common factor which is 3b

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2 years ago

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Elza [17]

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Step-by-step explanation:

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3 years ago

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seraphim [82]

Y = $35.25(6) + 40

y = $211.5 + $40= $251.50

the answer is a

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