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klemol [59]
3 years ago
11

I don’t know how to do it

Mathematics
1 answer:
DanielleElmas [232]3 years ago
7 0
Okay so if the graphs are parallel they’re going to have the same slope. so for example, 2a has y=3x+4 and y=3x+7.. those would be parallel because they both have 3x (the slope). The lines will be perpendicular when the slopes are the opposite reciprocal of one another. So on 2e you have one slope as -1/3 and the other as 3. That would be perpendicular. The opposite reciprocal just means that it will be the opposite sign (positive or negative) and you will basically flip the numbers ( 3/1 turns into 1/3). You’ll know if they are neither because the slope won’t follow any of these patterns. Some of them you may have to do an extra step, like 2b you need to get Y by itself before you can compare slopes
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Eduardwww [97]
<span>0.9% glucose solution means there are 0.9 g of glucose per 100 mL water.
</span><span> The concentration is required per litre for molar concentration:
0.9% glucose solution contains 9 g of glucose per 1000 mL or 1 L of water.
Molar mass of glucose is 180.16 g mol^-1 so 9 g = 9g/180.16 g mol^-1 = 0.05 moles
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4 years ago
What is 3x5 you say? it's 15
Shtirlitz [24]
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3 years ago
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15 = 3w solve for w, what does w equal
Vlada [557]

Answer:

w = 5

Step-by-step explanation:

15 = 3w

Switch sides.

3w = 15

Divide both sides by 3.

w = 5

6 0
3 years ago
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Ella bought a 2 bedroom unit 12 years ago for $95 000 and recently sold it for $280 000 (after deducting selling costs).
Pani-rosa [81]

C.P. = $95000

S.P. = $280000

a. Profit

= S.P. - C.P.

= $280000 - $95000

= $185000

b. Let the profit% of C.P. be x.

(x/100) × $95000 = $185000

=> x/100 = $185000/$95000

=> x/100 = 37/19

=> x = (37/19) × 100

=> x = 3700/19

=> x = 194 14/19

So, profit percent of buying price is 194 14/19%.

c. Let the profit% of S.P. be x.

(x/100) × $280000 = $185000

=> x/100 = $185000/$280000

=> x/100 = 37/56

=> x = (37/56) × 100

=> x = 3700/56

=> x = 925/14

=> x = 16 1/14

So, profit percent of selling price is 16 1/14%.

d. Buying price percentage profit sounds better as far as Ella is concerned.

8 0
3 years ago
Find the area 10ft 2 1/2​
hichkok12 [17]

Answer:

if your trying to find the area of 10ft and 2 1/2 all you gotta do is turn the 2 1/2 in a decimal and multiply it by 10 which is 25

Step-by-step explanation:

6 0
3 years ago
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