All categories

3 years ago

.

Mathematics

1 answer:

Crazy boy [7]3 years ago

3 0

They are direct :
$A. \\ 3x = y \\ D. \\ y =0.5x + 9$

You might be interested in

Which function below is the inverse of f(x)=7x-1/2

Margaret [11]

We write f(x) in terms of y I.e y=7x-1/2.

Fractions are sometimes ambiguous, we eliminate the fraction by multiplaying the entire function by 2.so as to get 2y=14x-1.

Make x the subject, x=2y+1/14,

Thus the inverse f(x)=2x+1/14

5 0

3 years ago

What are the intercepts of the line -5x-4y=10

Trava [24]

Slope-Intercept Form: y = mx + b, with m = slope and (0,b) as the y-intercept.

So starting with the y-intercept, the easiest method to find it is to convert this standard form equation to slope-intercept form. Firstly, add 5x to both sides:

$-4y=5x+10$

Next, divide both sides by -4 and your slope-intercept form is $y=-\frac{5}{4}x-\frac{5}{2}$

Looking at this slope-intercept form, the y-intercept is (0, -5/2).

Now to find the x-intercept, just set the y-variable to zero and solve:

$-5x-4*0=10\\-5x=10\\x=-2$

Our x-intercept is (-2,0).

4 0

4 years ago

Solve for -4k-6=1.2 if you did thank you so much im not good with math haha

ra1l [238]

-4K = 1.2 + 6
-4K = 7.2
-4K/-4 = 7.2/-4
Therefore k = -1.8

5 0

3 years ago

Divide 120 in the ratio of 1:2

mestny [16]

Answer:

40:80

Step-by-step explanation:

x+2x=3x

3x=120

120/3=

40*2=80

40:80=1:2

6 0

3 years ago

Explain how knowing that 5divided by eight equals 0.625 help you write the decimal for 4 and five eights

Black_prince [1.1K]

4 and five eights is equal to 4 + 5/8.
You know that the decimal representation of 5/8 is 0.625, so the decimal representations of 4 and five eights will be 4.625.

7 0

3 years ago