Ask question

Ask question

All categories

3 years ago

11

Suppose P varies directly with d , and p=7 when d=3.

1 answer:

bixtya [17]3 years ago

3 0

P vaires directly with d means
p=kd
7=k3
divide by 3
7/3=k

28=(7/3)d
times 3/7 both sides
84/7=d
12=d

B

You might be interested in

Please help asap!!!!

a_sh-v [17]

Answer:

12

Step-by-step explanation: 60

8 0

3 years ago

If f(x) = 2(3x) + 1, what is the value of f(2)?

Over [174]

F(2)=2(3*2)+1
f(2)=2(6)+1
=13
answer is 13

4 0

3 years ago

consider the function represented by the equation 16b = 4r - 12. write the equation in function notation, where b is the indepen

katovenus [111]

When you write a function in the form $y=f(x)$ , y is the dependent variable, and x is the independent variable.

So, if b is the independent variable, it means that we have to solve the expression for r.

To do so, we perform the following steps: start with

$16b = 4r - 12$

Add 12 to both sides

$16b+12 = 4r$

Divide both sides by 4:

$4b+3 = r$

So, we wrote the expression in the form $r = f(b) = 4b+3$ , which means that r is the dependent variable and b is the independent variable, as requested.

4 0

3 years ago

Which of the following points is the solution of the quadratic equation : 3x² - 5x-2=0

snow_tiger [21]

Answer:

answer in the file

Step-by-step explanation:

4 0

3 years ago

Graph the line that passes through the points (-4,-6) and (-2,-7) and

Komok [63]

Answer:

$y=-\frac{1}{2}x-8$

Step-by-step explanation:

$(-4,-6)(-2,-7)$

Step 1. Find the slope (by using the slope-formula)

m = slope

$m=\frac{y_2-y_1}{x_2-x_1}$

$m=\frac{-7--6}{-2--4}$

$m=\frac{-1}{2}$

$m=-\frac{1}{2}$

Step 2. Create the equation of a line that has a slope of $-\frac{1}{2}$

$y=-\frac{1}{2} x+b$

Step 3. Find the y-intercept

To do this, use any of the two points and substitute their x and y values

$y=-\frac{1}{2}x+b$

point: $(-2,-7)$

$(-7)=-\frac{1}{2}(-2)+b$

$(-7)=1+b$

$b=-7-1$

$b=-8$

Step 4. Write the equation in Slope-intercept form

$y=mx+b$

$y=-\frac{1}{2} x-8$

3 0

2 years ago