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Irina-Kira [14]
3 years ago
14

Which expressions are equivalent after simplifying? Check all that apply. (3.1a – 2.7b) + (1.5a – 4.9b) (2.3a + 0.2b) – 8b (–3.5

b + a) – (4.1b – 3.6a) –0.4b + (8b + 4.6a) 4.6a – 7.6b
Mathematics
2 answers:
ozzi3 years ago
6 0

Answer:

1,2,3

Step-by-step explanation:

fomenos3 years ago
4 0

Answer:

1st one 3rd one and last kne

Step-by-step explanation:

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I need help. Please help me with this
In-s [12.5K]

Answer:

c not sure tho

Step-by-step explanation:

5 0
2 years ago
What is the common <br> ratio for this geometric sequence?<br><br> 4, 24, 144, 864, ...
Taya2010 [7]

Answer:

the common ratio is 6

Step-by-step explanation:

because 4 times 6 is 24

24 times 6 is 144

144 times 6 is 864

5 0
3 years ago
Read 2 more answers
I need help with this question please
Novay_Z [31]
I think the answer is 80 because I’m point 2 it’s is 40 and in point 3 is 60 and in point 5 is 100 so I am guessing each goes by 20 so what is between 60 and 100 if you can’t by 20s would be 80 I don’t know if I am correct tho
4 0
3 years ago
What is the equation of the line that passes through the point (1, 3) and is perpendicular to the line 2x+3y=15?
cricket20 [7]

Answer:

y = 1.5x + 1.5

Step-by-step explanation:

First, plot 2x + 3y = 15 on a graph. Then plot (1,3) on a graph. After that, draw a line that passes through (1,3) and forms 90 degrees angles with 2x + 3y = 15. Then find the equation of that line by finding the y-intercept (0, 1.5). Then head up to the intersection point (1.6153846153846, 3.9230769230769). Subtract 1.5 from y. (2.4230769230769) Then divide by 1.5 (1.6153846153846). Reverse the operations you just did (in reverse order) to get the equation y = 1.5x + 1.5.

(I don't know how to explain this too well. Here's a graph to make more sense of it.)

5 0
3 years ago
Read 2 more answers
I don't know how to work this problem out
madam [21]
1/5(x-y) = 1
x+y = 9

x-y = 5 (x5)
x+y = 9

First you want to create both equations so at least one of the variables (x or y) are the same in both equations, so that is why I multiplied the top one by 5, you multiply the whole equation (both sides)

2x = 14
x = 7

Then you either Plus or minus one from the other, I plused the top one onto the bottom one, then solved for x

7 + y = 9
y = 2

Then put x back into one of the first two equations to get Y


4 0
3 years ago
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