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Kisachek [45]
3 years ago
5

Determine whether the representation is proportional.y= -9x

Mathematics
2 answers:
storchak [24]3 years ago
7 0
Yes it is proportional
valina [46]3 years ago
4 0

Answer:

Yes it is

Step-by-step explanation:

y=-9x means that for every x value, the y value decreases by 9, so it is proportional because the value of y decreases the same amount each time. For example, if x=1, y=-9. If x=5, y=-45, and so on.

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Factoring a quadratic with leading coefficient greater than 1 <br><br><br> 2y^2+17y-9
abruzzese [7]
Multiply first and last coefficients:
2*(-9) = -18

Find 2 factors which multiply to -18 and add up to 17:
18 and -1

Rewrite quadratic with 17y split up as' 18y - y', Then factor by grouping:

2y^2 - y + 18y -9 \\  \\ y(2y-1) + 9(2y-1) \\  \\ (2y-1)(y+9)
4 0
2 years ago
A kite is flying on 39 feet of string. How high is it above the ground if it’s height is 22 feet more than the horizons distance
SCORPION-xisa [38]

Answer:

about 36.3 feet

Step-by-step explanation:

Let x represent the height of the kite in feet. Then (x-22) is the horizontal distance to the kite. The Pythagorean theorem tells you the string length is related to these distances by ...

... 39² = x² + (x-22)²

... 2x² -44x -1037 = 0 . . . . rearrange to standard form

Using the quadratic formula, the positive solution is ...

... x = (-b+√(b²-4ac))/(2a) . . . . for a=2, b=-44, c=-1037

... x = (44 + √((-44)² -4(2)(-1037)))/(2·2)

... x = 11 + √639.5 ≈ 36.288

The kite is about 36.3 feet above the ground.

5 0
3 years ago
13.02-6y=8y using the method of solving linear equations
gregori [183]

well add -6y to 6y which equals 0 then add 8y to 6y which equals 14y

now you have 13.02=14y 

now you can divide 13.02 divided into 14 which equals 0.93

0.93 = y

5 0
2 years ago
Please help me ! ASAP. IF POSSIBLE
QveST [7]
6x is the answer for the question
5 0
2 years ago
Read 2 more answers
I need help on this ASAP so please help
In-s [12.5K]

Answer:

it’s 8 and 2 and 4 and 0

Step-by-step explanation:

this is because when you multiply 2x the x is an 8 so 2 times 8 is 16 then minus 2 is 14 which is greater than -4 same for my other answer

7 0
2 years ago
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