Solve for y: 20x + 4y = 28

Answers

Answer 1
Answer:

Answer:

y = 7 - 5x

Step-by-step explanation:

20x + 4y = 28

4y = 28 - 20x

y = 28/4 - 20x/4

y = 7 - 5x

-TheUnknownScientist


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9x-6y=-20 through (0,-4)

Answers

To make the equation go through (0,-4) the new equation would be 9x + 5y = 20. We needed to change it from subtracting to adding so the direction of the line would go from going down to up too up to down. In slope-intercept form the original equation would be found by the following.

9x - 6y = 20

-6y = 20 - 9x

y = -20/6 - (-9/6x)

y = 9/6x - 20/6

y = 3/2x - 10/3

To make the perpendicular line, take the slope and apply the opposite and reciprocal.

y = -2/3x - 10/3

Best of Luck!

Evaluate the expression. 4! x 3!

Answers

The value of the product of the given factorial 4!•3! is 144.

We have given that the  4! x 3!.

we have to determine the value of the above expression.

What is the value of the n!?

n!=1×2×3×4.......×n.

We have to determine the value of 4!

4!=4×3×2×1=24

also the value of the 3!,

3!=3×2×1=6

Therefore the value of

4!•3!= 24×6=144

Therefore the value of the 4!•3! is 144.

To learn more about the factorial visit:

brainly.com/question/2279140

#SPJ2

Answer:

144

Step-by-step explanation:

4!•3!= 144

(I used calculator)

Two different pairs of negative integers, x and y, that make the statement x − y = −1 true

Answers

one way is
solve for x
add y to both sides
x=y-1

sub negative values for y and get negative values for x
if y=-1, x=-2
if y=-3, x=-4
and so on

some points
(-2,-1)
(-3,-2)
(-4,-3)
(-5,-4)
(-6,-5)
etc
No, X+Y (both of them being negative integers) equal -1. Just a small miscalculation.

Plz hurry!!! i need help and I dont understand

Answers

Answer:

it wants you to find the slop by using the Y=mx+b

Step-by-step explanation:

this is how you solve.

Answer:

The slope is m = 7/3

The y-intercept is b = -5

Step-by-step explanation:

hope that helps!!!

What are the solutions to the quadratic equation 4x^2 = 64? A. x = −16 and x = 16
B. x = −8 and x = 8
C. x = −4 and x = 4
D. x = −2 and x = 2

Answers

Answer:

C

Step-by-step explanation:

Given

4x² = 64 ( divide both sides by 4 )

x² = 16 ( take the square root of both sides )

x = ± √(16) = ± 4

Solutions are x = - 4 and x = 4 → C

With two number cubes, what is the probability of rolling a sum of a 9?

Answers

7 out of 11 is the probability of rolling a 9