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3 years ago

X+72+70+50=180? what's the answer?

Mathematics

2 answers:

zavuch27 [327]3 years ago

7 0

80+n that the correct answer you are welcomed

Tpy6a [65]3 years ago

3 0

X=-12 thats your answer

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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

Robin, who is self-employed, contributes $4500/year into a Keogh account. How much will he have in the account after 30 years if

pashok25 [27]

Answer:

The amount that would be in the account after 30 years is $368,353

Step-by-step explanation:

Here, we want to calculate the amount that will be present in the account after 30 years if the interest is compounded yearly

We proceed to use the formula below;

A = [P(1 + r)^t-1]/r

From the question;

P is the amount deposited yearly which is $4,500

r is the interest rate = 2.5% = 2.5/100 = 0.025

t is the number of years which is 30

Substituting these values into the equation, we have;

A = [4500(1 + 0.025)^30-1]/0.025

A = [4500(1.025)^29]/0.025

A = 368,353.3309607034

To the nearest whole dollars, this is;

$368,353

4 0

2 years ago

Of 500 new electronic products, 280 were intended for people over the age of 16, and 320 used a rechargeable battery. Of those p

skad [1K]

Answer:

450/500 = 0.9sorry if it's wrong

Step-by-step explanation:

4 0

2 years ago

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Whats 9+10 answer now or die

Rainbow [258]

Answer:

The answer is 21 ,

Step-by-step explanation:

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3 years ago

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Monthly can't keep up with the demand for the latest best selling book. He had to order more copies twice this week. On Monday h

777dan777 [17]

On Monday, he received 4 boxes. On Wednesday, he received 11 boxes, so he received 15 boxes altogether.

7 0

3 years ago