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alexdok [17]
3 years ago
10

Solve the equation for y. 3.14= 7x-2y

Mathematics
1 answer:
Minchanka [31]3 years ago
6 0
Swap the sides of the equation

3.14 = 7x- 2y
turns into
7x-2y=3.14

Multiply both sides of the equation by 100

700x-200y=314

Divide both sides of the equation by 2
350 x -100y=157

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What value of x makes 1/2 (3x+4) =1/2
Sever21 [200]

Answer:

x = -1

Step-by-step explanation:

1/2 (3x +4 ) = 1/2

1/2 x 3x + 1/2 x 4 = 1/2

1.5 x + 2 = 1/2

1.5x = 1/2 -2

1.5x = -1.5

1.5x /1.5 = -1.5/1.5

x = -1

Check Back

1/2 ( 3 x -1 + 4) =1/2

1/2 ( 1) =1/2

1/2 =1/2

5 0
3 years ago
The heights of a group of boys and girls at a local middle school are shown on the dot plots below.
stira [4]
D, or The girls are generally taller than the boys.

Hope this helps!
8 0
3 years ago
Write the contrapositive of the conditional statement. Determine whether the contrapositive is true or false. If it is false, fi
Mila [183]
If you are 16 years old then you are a teenager Question 14
6 0
4 years ago
Explain how you determine an equation for a line using a table of input/output values.
Lubov Fominskaja [6]
Example :

            x               y
            1               3
            2               6
            3               9
            4               12

first thing u do is pick any 2 points (x,y) from ur table

(1,3) and (2,6)
now we sub those into the slope formula (y2 - y1) / (x2 - x1) to find the slope
(y2 - y1) / (x2 - x1)
(1,3)....x1 = 1 and y1 = 3
(2,6)...x2 = 2 and y2 = 6
sub
slope = (6 - 3) / (2 - 1) = 3/1 = 3

now we use slope intercept formula y = mx + b
y = mx + b
slope(m) = 3
use any point off ur table...(1,3)...x = 1 and y = 3
now we sub and find b, the y int
3 = 3(1) + b
3 = 3 + b
3 - 3 = b
0 = b

so ur equation is : y = 3x + 0....which can be written as y = 3x...and if u sub any of ur points into this equation, they should make the equation true....if they dont, then it is not correct

and if u need it in standard form..
y = 3x
-3x + y = 0
3x - y = 0 ...this is standard form
6 0
3 years ago
Rita is saving up 15,000 to put a down payment on a condominium. If he starts with 8,000 saved and saves an additional $850 each
belka [17]
I think there is more to the question, but the equation to solve for the number of months until Rita has enough money to put a down payment for a condominium is 15,000=8,000+850X
3 0
3 years ago
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