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Ugo [173]
4 years ago
11

Which factor do the following have in common? 2x^2-x-28. 2x^2-15x+28

Mathematics
1 answer:
SVETLANKA909090 [29]4 years ago
6 0
2x^2-x-28= (2x+7)(x-4)
2x^2-15x+28= (2x-7)(x-4)
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Please help I need help
JulijaS [17]
The rate of change in this pattern is 2:1 comparing the change in 'y' to the change in 'x'.. this means that if you go form 33 to 51 ( an increase of 18), then the the increase from 16 to ? will be 9.  Therefore, ? = 16 + 9 or 25
? = 25
4 0
3 years ago
2 t-shirts and 3 hats costs £12.
Mariana [72]

Answer:

Cost of tshirt = £7.29

Cost of what = £0.86

Step-by-step explanation:

2t +3h = 12; 10t + 15h = 60

5t + 4h =33; 10t + 8h = 66

15h -8h = -6

7h = -6; h = -6/7; h = 0.86

2t +3(-6/7) =12

14t -18 = 84

14t = 102; t = 102/ 14; t=7.29

6 0
3 years ago
The relationship between the number of pencils and the number of pens in Sophie’s pencil case can be represented using the ratio
tekilochka [14]

ratio of 6:10, if you divide both numbers by 2 you get a ratio of 3:5

multiply by 2 you get 12:20

multiply by 1.5 you get 9:15


D is not equivalent




4 0
3 years ago
I need help on this please
ss7ja [257]

Answer:D

Step-by-step explanation:

.708333... so about .71

14+23+14=51

51 divided by 72=~.71

6 0
3 years ago
In percent, the “whole” is 100. What is the “whole” in decimal form?
tekilochka [14]

1. You divide by 100 to find the decimal version of any percentage, and do the opposite for vise versa

8 0
3 years ago
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