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3 years ago

MIDDLE SCHOOL MATH help

Mathematics

2 answers:

Sveta_85 [38]3 years ago

6 0

1→3
2→6
3→9
6→12
7→21
9→27

Igoryamba3 years ago

3 0

answer:

3,6,9,18,21

step by step explanation:

everything is multiplied by 3

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Suppose you have a pieceof material that is 17 feet long. you only need 5/8 of the total length. how many feet do you need

Ilya [14]

(5/8) * 17 feet = 10.625 feet

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3 years ago

4> Solve by using Laplace transform: y'+5y'+4y=0; y(0)=3 y'(o)=o

harina [27]

Answer:

$y=3e^{-4t}$

Step-by-step explanation:

$y''+5y'+4y=0$

Applying the Laplace transform:

$\mathcal{L}[y'']+5\mathcal{L}[y']+4\mathcal{L}[y']=0$

With the formulas:

$\mathcal{L}[y'']=s^2\mathcal{L}[y]-y(0)s-y'(0)$

$\mathcal{L}[y']=s\mathcal{L}[y]-y(0)$

$\mathcal{L}[x]=L$

$s^2L-3s+5sL-3+4L=0$

Solving for $L$

$L(s^2+5s+4)=3s+3$

$L=\frac{3s+3}{s^2+5s+4}$

$L=\frac{3(s+1)}{(s+1)(s+4)}$

$L=\frac3{s+4}$

Apply the inverse Laplace transform with this formula:

$\mathcal{L}^{-1}[\frac1{s-a}]=e^{at}$

$y=3\mathcal{L}^{-1}[\frac1{s+4}]=3e^{-4t}$

7 0

3 years ago

What is 5/8 1/2 2/3 2/5 from least to greatest

S_A_V [24]

Answer:2/5, 1/2, 5/8, 2/3

Step-by-step explanation:

im in 10th grade i thin k i know my fractions

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3 years ago

Kerry purchased a used car for 14,4000. And had to pay 8% sales tax how much did she pay

saul85 [17]

Answer:

Kerry should pay = 155520

Step-by-step explanation:

Total amount paid = 14,4000 + 8% of 14,4000

It is given that,

Kerry purchased a used car for 14,4000. And had to pay 8% sales tax

8% of 14,4000 = (8*144000)/100 = 11520

<u>To find total amount paid</u>

Total amount paid = 14,4000 + 8% of 14,4000

= 14,4000 + 11520 =155520

Therefore Kerry should pay = 155520

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3 years ago

Adult tickets to a play cost $24. Tickets for children cost $18. Tickets for a group of 13 people cost $282. Write and solve a s

Elan Coil [88]

Let number of Adult ticket be x
and number of Child ticket be y
so
$282 = $24x + $18y.
:)

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3 years ago

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