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34kurt
2 years ago
10

Plz help this one is difficult

Mathematics
2 answers:
hoa [83]2 years ago
8 0

Answer:

-3(x-y)

Step-by-step explanation:

the difference of x and y = x - y

negative three times the difference of x and y

= -3 * (x-y)

= -3(x-y)

attashe74 [19]2 years ago
6 0

Answer:

its the second one -3(x-y)

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Una compañía de fabricación de muebles suele emplear 18 horas para ensamblar 12 muebles. Para determinar el número de muebles qu
uysha [10]

Answer:

The time required is 4.5 hours.

Step-by-step explanation:

A furniture manufacturing company typically takes 18 hours to assemble 12 pieces of furniture. To determine the number of pieces of furniture that will be assembled in 3 hours, the following calculations were proposed; the one that allows to verify this relationship correctly is

The 12 pieces of furniture assembled in 18 hours

So, 1 piece assembled in 18 / 12 hours = 1.5 hours  

And 3 pieces assembled in 3 x 1.5 = 4.5 hours

5 0
2 years ago
the empire stat building in new york city is 1454 feet tall a model building is 24 inches tall what is the ratio of the model to
Blizzard [7]
I believe the answer is 6
6 0
2 years ago
In a sample of 150 cars, 18 cars failed a safety inspection. The sampling method had a margin of error of 0.02
mestny [16]

Answer:  

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

Step-by-step explanation:  

Total number of cars = 150

Cars that failed the safety inspection = 18

The proportion is given by

p = 18/150

p = 0.12

p = 12%

The confidence interval is given by

p ± margin of error

Where margin of error is 0.02

0.12 ± 0.02

Lower limit = 0.12 - 0.02

Lower limit = 0.10

Lower limit = 10%

Upper limit = 0.12 + 0.02

Upper limit = 0.14

Upper limit = 14%

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

7 0
2 years ago
Please help, will mark Brainly and if you need help with anything I’ll help with any work you send
inessss [21]

Answer:

The first one is missing (d - 9) so it would be 5(d -9) or when you factor it out 5d - 45

In the second one (d + 7) is missing so it will be 8d(d + 7) so if you factor that out you will receive 8d^2 + 56

Step-by-step explanation:

3d^2 + 18d -21 =(3d -3)( d + 7)

3d^2 -30d +27 =(3d -3)(d - 9)

6 0
3 years ago
A sheet of glass has a density of 2.5 g/cm3. what is the density of the glass in kg/m3
asambeis [7]

Answer:

this is ez

Step-by-step explanation:

2.5 g converted to kg: 2.5 g x 1 kg/1000 g = 0.0025 kg = 2.5x10-3 kg

cm3 converted to m3: 1 cm3 x 10-6 m3/cm3 = 1x10-6 m3

Thus, the conversion of 2.5 g/cm3 to kg/m3 would be 2.5x10-3 kg/10-6 m3 = 2.5x103 kg/m3 = 2500 kg/m3

7 0
3 years ago
Read 2 more answers
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