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trasher [3.6K]
4 years ago
12

What is the constant of proportionality in the equation y = 2.5x?

Mathematics
1 answer:
Oksi-84 [34.3K]4 years ago
3 0

Answer:

k = 2.5

Step-by-step explanation:

The standard form of a proportional equation is

y = kx ← k is the constant of proportion

y = 2.5x ← is in this form

with k = 2.5

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Jade’s new suitcase weighs 3kg.
timama [110]

Answer:

88%

Step-by-step explanation:

Since the suitcase weighs 3kg,

weight left for packing

= 25 -3

= 22kg

Percentage left for packing

=  \frac{weight \: left \: for \: packing}{total \: weight \: }  \times 100\%

=  \frac{22}{25}  \times 100\%

= 88%

8 0
3 years ago
Factor the polynomial <br>64x^3-125
kobusy [5.1K]
64 x^{3} -125

= (4x)^{3} - 5^{3} ------> because, (4x)^{3} is same as 64x³ and 
                                                5^{3} is same as 125

Using the formula: a^{3}- b^{3}  =(a-b)(a ^{2} +ab+b ^{2} ), we get, 

= (4x -5)((4x)^{2} +4x*5+ 5^{2} )

= (4x -5)(16 x^{2} +20x+25)   ------>that's your answer!!
7 0
3 years ago
Please help me with this questions and please shoe your work. Thank you very much
Katena32 [7]
D
E
F


Work
So the answer to the original problem:
6-4.5 +(-8) equals -1.5
D,E,and F all yeild this answer.

Another way to do it is to simply rearrange the equation 

D:
6-4.5 +(-8)
6-4.5-8
your just removing the parenthesis and swapping the sign

E:
6+(-4.5) -8
is the exact same as
6-4.5 +(-8)
you're just moving the parenthesis

F:
This one you're just adding a parenthesis and flipping the of
6-4.5 +(-8)
which turns it into
6+(-4.5)+(-8)

Hope this helps!

6 0
3 years ago
How to do this? pls help
densk [106]

Answer:

1006y

Step-by-step explanation:

6 0
3 years ago
The Johnson family pays 1,783 per month for rent. If the cost of their rent remains the same, how much will they pay for rent ov
irinina [24]

Answer:

1 year= 12 months

1 months rent=1783

1783x12=21396

15 years = 180 months

the equation would be

1783x180=320940

or

21396x15= 320940

6 0
3 years ago
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