PLEASE PLEASE PLEASE HELP!!!!

Answers

Answer 1

Answer: the answer is the fourth one

Answer 2

Answer: the answer is 1/2, the last one

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Simplify 1) 3b + b + 6 =2)n + 5n - 3c =3) 12d - 2d + e =

10 with two inteWhich two lines
are parallel?
a) 2x + 5y = 6 and 5x + 2y = 10
b) 3x + 4y = 12 and 6x + 8y = 12
2x+ 5y=6 and -2x + 5y = 14
d) 3x + 4y= 12 and 6x - 8y = 20
go to station 9
go to station 7
go to station 4
go to station 8

Answers

Answer:

b) 3x + 4y = 12 and 6x + 8y = 12

Step-by-step explanation:

they share the same slope

Final answer:

In this question, we are asked to determine which two lines are parallel. By finding the slopes of the given lines, we can determine if they are parallel or not.

Explanation:

In order for two lines to be parallel, they must have the same slope. To determine the slope of a line, we can rearrange the equation into slope-intercept form (y = mx + b), where m represents the slope. Let's find the slopes of the given lines:

a) 2x + 5y = 6 --> 5y = -2x + 6 --> y = (-2/5)x + 6/5 --> slope = -2/5

b) 3x + 4y = 12 --> 4y = -3x + 12 --> y = (-3/4)x + 3 --> slope = -3/4

c) 2x + 5y = 6 and -2x + 5y = 14 both have the same slope of -2/5, so these lines are parallel.

d) 3x + 4y = 12 and 6x - 8y = 20 do not have the same slope, so these lines are not parallel.

Learn more about parallel lines here:

brainly.com/question/32035102

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In a parking lot 16% of the cars are blue . There are 4 blue cars in the parking lot. How many cars in the parking lot are not blue?

Answers

Since 4 is 16% of the cars that are blue in the parking lot, we can say that 1 car is 4% of the cars that are blue in the parking lot. Since 25 times 4 is 100 and 100 is the total number of percents, we can also say that there are 25 cars in total in the parking lot. Then, in order to find the cars that are not blue, then we can subtract 4 from 25, which brings us with 21 cars that are NOT blue. =) Hope you understood!

Answer: 21 non-blue cars

4/25 = 0.16
0.16 * 100 = 16%
25 - 4 = 21

There are 21 non blue cars in the parking lot

8x-2=-9+7x can you do it step by step

Answers

In going to move constants to one side and variables to another by adding and subtracting.

8x -2 + 2 - 7x = -9 + 2 + 7x -7x

8x -7x = -9 + 2
Now solve

X = -7

well u move all the variables to the left side, so 8x is already in the left but 7x isnt so you move 7x to the left side of the equal sign which makes 7x to -7x.

8x-2-7x=-9

you move the -2 to the right side of the equal sign which becomes +2.

8x-7x=-9+2

you do the math which 8x-7x=1x and -9+2=-7

so.... 1x=-7

and x=-7. Make sure to always combine like terms.

To make sure it is correct replace the x with the -7 and

8(-7)-2=-9+7(-7)

-56-2=-9-49

-58=-58

so x= -7

A survey indicated that 3 out of 5 doctors use brand x aspirin. If 2000 doctors were surveyed how many used brand x? show work please!

Answers

divide 2000 by 5 and then multiply by 3 to get your answer.
2000/5=400
400x3=1200

so 1200 doctors used brand x. ;)

I converted 3/5 to 60%=.60
of means times
2000 X .60=1200 doctors used brand x

hope this helps

A sequence is defined recursively by f(0)=2 and f(n)=f(n+1)=-2f(n)+3 for n greater than or equal to 0, then f(2) is equal to

Answers

If you would like to know what is f(2), you can calculate this using the following steps:

f(0) = 2
f(n+1) = - 2 * f(n) + 3
f(1) = - 2 * f(0) + 3 = - 2 * 2 + 3 = - 4 + 3 = - 1
f(2) = - 2 * f(1) + 3 = - 2 * (-1) + 3 = 2 + 3 = 5

The correct result would be f(2) = 5.

11 billion in scientific notation

Answers

11 billion is 11,000,000,000 in standard form.

Its scientific notation is:
1.1 x 10¹⁰

In writing a scientific notation, there must only be 1 digit before the decimal number.

1.1 is the coefficient of the scientific notation
10 is the base
¹⁰ is the exponent, It is a positive exponent. This means that the decimal point moved from the right of the number to its left.

1 billion+1 Billion+ 1 Billion+ 1 Billion+ 1 billion+ 1 billion+ 1 billion+ 1 billion+ 1 billion+ 1 billion+ 1 billion= 11 billion

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