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4 years ago

2b−15>21? How do I do this and what is the answer???

2 answers:

4 0

2b - 15 > 21

add 15 to both sides:

2b-15+15 > 21 + 15

2b > 36

Divide both sides by 2 :

2b/2 > 36/2

2b = 36

b = 36 / 2

b > 18

hope this helps!

ASHA 777 [7]4 years ago

4 0

2b - 15 > 21

2b > 21 + 15

2b > 36

b > 18

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The rule for Function A is y= -2/3x

Rom4ik [11]

Answer:

Both functions have negative rates of change

Function B has a greater rate of change than Function A

Step-by-step explanation:

we know that

Function A

The rule for Function A is

$y=-\frac{2}{3}x$

This is the equation of a proportional relationship (the line passes through the origin)

The slope is equal to $m=-\frac{2}{3}$

Function B

Find the equation of the function B

we have the points (-2,0) and (0,-2)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{-2-0}{0+2}$

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

$m=-1$

The equation of the function B in slope intercept form is equal to

$y=mx+b$

we have

$m=-1\\b=-2$

substitute

$y=-x-2$

Verify each statement

Option 1) Both functions have negative rates of change

The statement is true

Because, the rate of change is the slope of the linear equation

Function A ----> $m=-\frac{2}{3}$

Function B ----> $m=-1$

Option 2) Both functions have the same rate of change.

The statement is false (see the explanation)

The rate of change are different ( m=-2/3 and m=-1)

Option 3) When graphed, Function A and Function B are parallel

The statement is false

When graphed, Function A and Function B are intersecting lines, because their slopes are different

Option 4) Function B has a greater rate of change than Function A

The statement is true

Remember that the rate of change can be either positive (increasing function) or negative (decreasing function). To find out which function has a greater rate of change, compare the absolute value of their slopes

therefore

1 > 2/3

6 0

4 years ago

Otse verharan's office maskiner weighed 550 grams on the second visit the kinen had gained 350 grams. On the two visit the

pantera1 [17]

Answer:

63.64%

Step-by-step explanation:

4 0

3 years ago

What is the vaule of m in this equation 188 = m + 80

Crazy boy [7]

Explanation:

First, switch sides of an equation.

$m+80=188$

Then, you subtract by the 80 from both sides of an equation.

$m+80-80=188-80$

And finally, simplify and subtract the numbers.

$188-80=108$

$\boxed{m=108}$

Hope this helps!

Thank you!

Have a great day!

8 0

3 years ago

Read 2 more answers

Help!! 50 points and brainliest!

Viktor [21]

Answer:

Second choice:

$x=2t$

$y=4t^2+4t-3$

Fifth choice:

$x=t+1$

$y=t^2+4t$

Step-by-step explanation:

Let's look at choice 1.

$x=t+1$

$y=t^2+2t$

I'm going to subtract 1 on both sides for the first equation giving me $x-1=t$ . I will replace the $t$ in the second equation with this substitution from equation 1.