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3 years ago

15

If 4 times the sum of a number and 3 is six less than twice the number, what is the number?

1 answer:

Nat2105 [25]3 years ago

3 0

Answer:

-9

Step-by-step explanation:

4(n + 3) = 2n - 6

4n + 12 = 2n - 6

2n = -18

n = -9

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Cory needs 24 boards that are 47 1/2 inches long . how many feet of board does he need?

Natasha2012 [34]

24 * 47.5 = 1140 inches ;
But, <span>ft =<span>in * 0.083333 ;
1140 * 0.083333 </span></span>≈ 95 feet of board ;

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3 years ago

If you run for 3 hours at 5 miles per hour, how far will you run?<br><br> ____miles?

Westkost [7]

Answer and Step-by-step explanation:

Simply multiply 3 by 5.

We do this because for every hour we run, we run 5 miles, and the person runs for 3 hours.

<u>So, the answer is 15 miles.</u>

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<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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3 years ago

Read 2 more answers

Keep getting this wrong

Minchanka [31]

Remember that the y-intercept is where the function has a value of $x = 0$ and the x-intercept is where the function has a value of $y = 0$ . Thus, to find the x-intercept and y-intercept, we can substitute these values into the equation and solve for the other variable.

<u>x-intercept</u>

Since the x-intecept has a y-value of 0, we can substitute this into the function and solve for $x$ .

$0 = -2x - 3$

Set up

$3 = -2x$

Add 3 to both sides

$x = - \dfrac{3}{2}$

Divide both sides by -2

The x-value of the x-intercept is $-\frac{3}{2}$ and the y-value is 0, meaning that the x-intercept has coordinates $\boxed{(-\frac{3}{2}, 0)}$ .

<u>y-intercept</u>

Since the y-intercept has a x-value of 0, we can substitute this into the equation and solve for $y$ :

$y = -2(0) - 3$

Set up

$y = -3$

Multiply and simplify

The y-value of the y-intercept is -3, meaning that the y-intercept of the function is $\boxed{(0, -3)}$ .

4 0

3 years ago

Read 2 more answers

Steve bought used and new video games from a web site. The new games cost $54 each and the used games cost $9 each. He spent no

Elena L [17]

Answer: Steve bought 4 new video games, and he spent $216

Step-by-step explanation: Because 54x4=216

I hope this helped

4 0

3 years ago

Joshua uses his thermometer and finds the boiling point of ethyl alcohol to be 75.0°C. He looks i a reference book and finds tha

aniked [119]

The percent error is 6.25%

Step-by-step explanation:

Percent error is given by:

$Percent\ Error=\frac{|Experimental\ Value -\ Accepted\ value|}{Accepted\ value}*100$

Here,

Accepted value = 80.0°C

Experimental Value = 75.0°C

Putting the values in the formula

$Percent\ Error=\frac{|80.0 -75.0}{80.0}*100\\=\frac{|5.0|}{80.0}*100\\=\frac{5.0}{80.0}*100\\=0.0625*100\\=6.25\%$

Hence,

The percent error is 6.25%

Keywords: Percentage, Error

Learn more about percent error at:

#LearnwithBrainly

8 0

4 years ago