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suter [353]
3 years ago
11

Please help!!! thanks 3

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
6 0
Yea it’s yellow I’m pretty sure
Ganezh [65]3 years ago
5 0
I think it’s yellow. Sorry if I’m wrong.
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mylen [45]

Answer:

I think that 12 feet is equal to 4 yards

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3 years ago
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Please solve this simultaneous equation, i'm not that good at it.<br><br> 2r-s=10<br> rs-s^2=12
o-na [289]

Answer:

s = 6, r = 8 or s = 4, r = 7

Step-by-step explanation:

2r - s = 10

2r = 10 + s

r = 5 + s/2 --(1)

rs - s^2 = 12 --(2)

sub (1) into (2):

(5 + s/2)s - s^2 = 12

5s + 0.5s^2 - s^2 = 12

-0.5s^2 + 5s - 12 = 0

s^2 - 10s + 24 = 0

(s - 6)(s - 4) = 0

therefore s = 6 or s = 4

when s = 6, r = 8 and when s = 4, r = 7

if you would like to discover more about simultaneous equations, you can have a look at my Instagram page (learntionary). I'll be posting mathematics related stuff there and some of my notes (simultaneous enq notes are already posted!)

7 0
2 years ago
What is a factor of 15xy-45x-6y+18?<br><br> A. Y-2<br> B. 5x-3<br> C. 5x-2<br> D. Y-6
AfilCa [17]
Factor the following:
15 x y - 45 x - 6 y + 18
Factor 3 out of 15 x y - 45 x - 6 y + 18:
3 (5 x y - 15 x - 2 y + 6)
Factor terms by grouping. 5 x y - 15 x - 2 y + 6 = (5 x y - 2 y) + (6 - 15 x) = y (5 x - 2) - 3 (5 x - 2):
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Factor 5 x - 2 from y (5 x - 2) - 3 (5 x - 2):
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2 years ago
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To isolate m, we'll multiply both sides by 8.

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3 years ago
Evaluate ( x + 1)2-5 when x=-3
Luden [163]
Parentheses first: -3+1 = -2
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Final Answer: -9
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