3 years ago

Write an expression for 3 more than twice the number n.Please answer my question

Mathematics

1 answer:

gayaneshka [121]3 years ago

6 0

Answer:

2n+3

Step-by-step explanation:

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Sally can paint a room in 4 hours while it takes Steve 5 hours to paint the same room. How long would it take them to paint the

Flauer [41]

They can do it in2.5 hours

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3 years ago

Alejandro has 128 ounces of dog food.He feeds his dog 8 ounces each day.How many days will the dog food last

AnnyKZ [126]

16 days

Divide 128oz(starting point) by 8(how many you feed everyday)

An equation would look something like this:

x = 128/8

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4 years ago

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What is the value of y in the solution to the system of equations?<br> *x+3y=1<br> 2x – 3y = -30

Delvig [45]

Answer:

$\large\boxed{y=\dfrac{32}{9}}$

Step-by-step explanation:

$\underline{+\left\{\begin{array}{ccc}x+3y=1\\2x-3y=-30\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad3x=-29\qquad\text{divide both sides by 3}\\.\qquad x=-\dfrac{29}{3}\\\\\text{put the value of x to the first equation}\\\\-\dfrac{29}{3}+3y=1\qquad\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup^1\cdot\left(-\dfrac{29}{3\!\!\!\!\diagup_1}\right)+(3)(3y)=(3)(1)\\\\-29+9y=3\qquad\text{add 29 to both sides}\\\\9y=32\qquad\text{divide both sides by 9}\\\\y=\dfrac{32}{9}$

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3 years ago

Dave wants to buy a classic leather flight jacket that is being sold for $60 less than the normal price. if the jacket normally

yulyashka [42]

Answer: 500%

Step-by-step explanation: 300/60 = 5

5 = 500%

To check work:

60*5 = 300

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2 years ago

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valentina_108 [34]

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Exact Form:

√

Decimal Form:

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3 years ago