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2 years ago

12

Why do you think rates are usually written as unit rates

1 answer:

kicyunya [14]2 years ago

5 0

Answer: A rate is a ratio of two quantities: miles per hour, calories per cookie, dollars per person, ... a unit rate just specifies the units (miles, hours) of the two quantities.

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Pls help I don't understand:

sineoko [7]

Answer:

Part a) $T(d)=2d+30$

Part b) $T(6)=42\ minutes$

Step-by-step explanation:

Part a) Write an equation for T (d)

Let

d ----> the number of days

T ---> the time in minutes of the treadmill

we know that

The linear equation in slope intercept form is equal to

$T=md+b$

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

The slope or unit rate is

$m=2\ \frac{minutes}{day}$

The y-intercept or initial value is

$b=30\ minutes$

substitute

$T(d)=2d+30$

Part b) Find T (6), the minutes he will spend on the treadmill on day 6

For d=6

substitute in the equation and solve for T

$T(6)=2(6)+30$

$T(6)=42\ minutes$

8 0

2 years ago

Tomtit [17]

This would be 525 / 0.70 = $750 Answer

8 0

2 years ago

If 4(a+3)=2a+12, then a= __

Verdich [7]

Answer:

45

Step-by-step explanation:

a = 78/20=45

3 0

2 years ago

Read 2 more answers

Instructions: Given the following constraints, find the maximum and minimum values for z.

loris [4]

Answer:

$x+3y\leq 0$

$x-y\geq 0$

$1) x+3y=0$

$x-y=0$

$-----$

$4y=0$

$y=0$

$x=0$

$(0,0)$

$2)(x+3y=0)3$

$3x-7y=16$

$3x+9y=0$

$3x-7y=16\\------\\16y=-16$

$y=-1$

$(3,-1)$

$3)(x-y=0)3$

$3x-7y=16$

$3x-3y=16$

$3x-3y=0$

$3x-7y=16\\------\\4y=-16$

$y=-4$

$x=4$

$(4,-4)$

$Z=-x+5y$

$(0,0):z=0$

$(3,-1):z=-8$

$(4,-4):z=-24$

$Maximum \:Value\: of\: z:0$

$Minimum\: Value\: of\: z:-24$

<u>OAmalOHopeO</u>

8 0

2 years ago

Which linear equation has a slope of 3 and a y-intercept of –2?

deff fn [24]

Hey there!

We'll write our linear equation in the slope-intercept form, which is:

y = mx +b

Where m is the slope and b is the y-intercept. With that being said, we don't have to solve for anything here. We have both the slope in the y-intercept to plug in. We have:

y = 3x - 2

With 3 as the slope and 2 as the y-intercept.

Hope this helps!

7 0

2 years ago

Read 2 more answers