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3 years ago

The table below shows the amount of money needed to buy certain amounts of fabric.

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

8 0

Answer:

Do you have the a picture of the table

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(1 point) consider the function f(t)=⎧⎩⎨⎪⎪⎪⎪0,−5,−6,6,t<00≤t<11≤t<7t≥7;f(t)={0,t<0−5,0≤t<1−6,1≤t<76,t≥7; 1. wr

sergij07 [2.7K]

$f(t)=\begin{cases}0&\text{for }t$

Recall that

$u(t)=\begin{cases}0&\text{for }t$

Take it one piece at a time. For $t\ge0$ , we can scale $u(t)$ by -5:

$-5u(t)=\begin{cases}0&\text{for }t$

If we shift the argument by 1 and scale by -5, we have

$-5u(t-1)=\begin{cases}0&\text{for }t$

so if we subtract this from $-5u(t)$ , we'll end up with

$-5u(t)+5u(t-1)=\begin{cases}0&\text{for }t$

For the next piece, we can add another scaled and shifted step like

$-6u(t-1)+6u(t-7)=\begin{cases}0&\text{for }t$

so that

$-5u(t)+5u(t-1)-6u(t-1)+6u(t-7)=\begin{cases}0&\text{for }t$

For the last piece, we add one more term:

$6u(t-7)=\begin{cases}0&\text{for }t$

and so putting everything together, we get $f(t)$ :

$f(t)\equiv-5u(t)+5u(t-1)-6u(t-1)+6u(t-7)+6u(t-7)$
$f(t)\equiv-5u(t)-u(t-1)+12u(t-7)$

5 0

3 years ago

5th grade math. Correct answer will be marked brainliest.

myrzilka [38]

Answer:

45.2 × 10⁰ = 45.2 (a⁰ = 1 )

45.2 × 10¹ = 452

45.2 × 10² = 4520

45.2 × 10³ = 45200

8 0

3 years ago

Read 2 more answers

Only do 7. iii<br>I will mark you as brainliest.. I don't have time please fasttt

Sophie [7]

Answer:

Check my explanation

Step-by-step explanation:

(i) the area of the floor is 30m² (6m · 5m)

(ii) the perimeter of the floor is 22m (6m + 5m + 6m + 5m)

(iii) the area of the walls is:

24m² (for the 6m by 4m walls)

20m² (for the 5m by 4m walls)

88m² in total total

7 0

3 years ago

A potato gun is a device made out of plastic pipe that launches a potato using compressed air. They

kramer

Concussion guy Union rep pic leg in on no on TV Nick datedu I’m a

4 0

3 years ago

Please help me of this !! :))

cricket20 [7]

Answer: b

Step-by-step explanation:

3 0

3 years ago