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baherus [9]
3 years ago
8

. Write an algebraic expression for the following. the sum of 12 and 3 times a number

Mathematics
1 answer:
mariarad [96]3 years ago
4 0

let "a number" = n

"3 times a number" = 3n

"the sum of 12" = "+ 12

Combine the two terms

3n + 12, or (B) is your answer

hope this helps

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max2010maxim [7]

\sf{3. \ \ Given : \dfrac{2}{3} - \dfrac{5}{4} + \dfrac{7}{2}}

Let us solve the first two fractions : The LCM of 3 and 4 is 12

\sf{\implies \dfrac{4(2) - 5(3)}{12} + \dfrac{7}{2}}

\sf{\implies \dfrac{8 - 15}{12} + \dfrac{7}{2}}

\sf{\implies \dfrac{-7}{12} + \dfrac{7}{2}}

LCM of 2 and 12 is 12

\sf{\implies \dfrac{-7 + 7(6) }{12}}

\sf{\implies \dfrac{-7 + 42}{12}}

\sf{\implies \dfrac{35}{12}}

\sf{\implies 2 +\dfrac{11}{12}}

\sf{\implies 2 \dfrac{11}{12}}

---------------------------------------------------------------------------------------

\sf{4. \ \ Given : \dfrac{(2 - 7)^2 + 5}{3}}

\sf{\implies \dfrac{(-5)^2 + 5}{3}}

\sf{\implies \dfrac{25 + 5}{3}}

\sf{\implies \dfrac{30}{3}}

\sf{\implies 10}

7 0
3 years ago
Read 2 more answers
Where is the point -3,4 located on a coordinate plane?
tatyana61 [14]

Answer:

It is located 3 to the right and 4 up or in the second quadrant

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
There is a line through the origin that divides the region bounded by the parabola and the x-axis into two regions with equal ar
jasenka [17]

Using the slope line formula,

The slope of line y = mx is 1.0315.

We have given that,

parabola equation is y = 5x - 3x²

line passing through origin is in the form of y = mx

==> mx = 5x - 3x²

==> 3x²+ mx - 5x = 0

==> 3x² + x(m -5) = 0

==> x(3x + (m -5)) = 0

==> x = 0 , x = (5 -m)/3

The total area of the bounded region is then the integral of 5x - 3x² from x = 0 to x = (5-m)/3

Area under y = 5x - 3x2 and y = mx is (125/54)/2 = 125/108

==> [0 to (5 -m)/3] ∫(5x - 3x²-mx )dx = 125/108

==> [0 to (5 -m)/3]∫( (5 - m)x - 3x2 )dx = 125/108

==> [0 to (5 -m)/3] ((5 - m)x²/2 - x³ )= 125/108

==> (5 - m)[(5 -m)/3]²/2 - ((5 -m)/3)³ = 125/108

==> (5 -m)³/18 - (5 -m)³/27 = 125/108

==> (5 -m)³/54 = 125/108

==> (5 -m)³ = 125/2

==> (5 -m) = 3.9685

==> m = 5 - 3.9685

==> m = 1.0315

Hence slope of line = 1.0315

To learn more about slope of line , refer:

brainly.com/question/29044610

#SPJ4

5 0
1 year ago
Keshia is riding her bike on bay view bike path. Keyshia’s bike got on a flat tire 2/3 of the way down the path and she had to s
Anastaziya [24]
You just said the answer. She rode 2/3 of the way, or 66.6 % repeating which rounds to 67%.
3 0
3 years ago
Read 2 more answers
A coordinate grid is placed over a map and every unit represents 1 mi. The point at (3, 8) represents the location of the baseba
alexira [117]
The distance between 2 points ( x_{1}, y_{1}) and ( x_{2}, y_{2}) on the coordinate plane is \sqrt{(x_{2}-x_{1})^2-(y_{2}-y_{1})^2}
So the distance between the given points is \sqrt{(7-3)^2+(-2-8})^2}= \sqrt{4^2+(-10)^2}= \sqrt{16+100}=  \sqrt{116}=10.8
As every unit is 1 mile, so the distance should be 10.8*1=10.8miles.

Hope this helps.
3 0
4 years ago
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