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Sever21 [200]
3 years ago
10

Simplify 4( 3+ 7y) + 6(2 - y) if y =2

Mathematics
1 answer:
UkoKoshka [18]3 years ago
8 0

Answer:

68

Step-by-step explanation:

The expression is given as:

4( 3+ 7y) + 6(2 - y)

It is known that y is equal to 2. Therefore, substitute 2 in for y.

4(3+7(2))+6(2-2)

Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

Solve inside of the parentheses first.

4(3+7(2))+6(2-2)

4(3+14)+6(0)

4(17)+6(0)

Multiply

68+0

Add

68

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5 & 2/8 - 3 &7/8 = ?​
miv72 [106K]

Answer:

11/8 or 1 & 3/8

Step-by-step explanation:

5 & 2/8=21/4

3&7/8=31/8

21/4-31/8=11/8 or 1 & 3/8

4 0
2 years ago
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antiseptic1488 [7]

Answer:

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8 0
2 years ago
I will give brainiest to the person who answers this
musickatia [10]

Answer:

12.4

Step-by-step explanation:

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7 0
2 years ago
Find the point on the line y = 3x + 2 that is closest to the origin.
anzhelika [568]
1.
the slope of the line y=3x+2 is the coefficient of x, that is 3.

2.
the slope of any line perpendicular to the line y=3x+2, is m, such that:

3*m=-1

so m= \frac{-1}{3}

3. 
so any line with equation y=-1/3x+k is perpendicular to y=3x+2.

moreover, the line y=-1/3x (so k=0) is the line passing through the origin
(0, 0) and perpendicular to y=3x+2


4. This means that the closest point of y=3x+2 to the origin is the intersection point of lines y=3x+2 and y=-1/3x

5.
to find this point:

3x+2=(-1/3)x
x(3+1/3)=-2
x(9/3+1/3)=-2

x*10/3=-2

x= \frac{-2*3}{10} = \frac{-6}{10}=-0.6


thus y is :  (-1/3)(-6/10)=0.2



Answer: (-0.6, 0.2)

3 0
3 years ago
the area of the base of a rectangular prism shown below is 45 square millimeters. The height is 5 1/2 millimeters. what is the v
Mamont248 [21]
Okay, your answer would be 247.5mm² hope that helped
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3 years ago
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