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Varvara68 [4.7K]
2 years ago
11

If Andrew can paint 1 house in 4 days, which sentence is true? A. Andrew can paint 9 houses in 27 days. B. Andrew can paint 8 ho

uses in 30 days. C. Andrew can paint 7 houses in 28 days. D. Andrew can paint 6 houses in 18 days.
Mathematics
2 answers:
mezya [45]2 years ago
8 0

Answer:

The answer is C.

Step-by-step explanation:

I got this by multiplying the houses by the days it would take to paint to paint one house.

9*4=27

polet [3.4K]2 years ago
6 0

Answer:

C. Andrew can paint 7 houses in 28 days.

Step-by-step explanation:

Andrew can paint a house in 4 days, to check which statement is okay you just have to create an equation, the number of houses will be represented by "x" and the number of days it took will be Y you just check all the statements, for example:

Andrew can paint 9 houses in 27 days, x=9 y=27.

Y= 4x= 27= 4(9)

27= 36

As this is not correct, the statement is also in correct, the only statement that matches the math is the third one, Andrew can paint 7 houses in 28 days. X=7 Y=28

Y=7x

28=4(7)

28=28

As the math is correct the option that actually fits the equation would be the third one.

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{x+y=36

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Help me please,Thanks
alisha [4.7K]
Answer:  The width is:  " 10 in. " .
________________________________________________
Explanation:
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Consider a "rectangular prism".
________________________________________________
The formula for the Volume of a rectangular prism:
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    V = L * w * h ; 
_________________________________________________
                 in which:
 
                     V = volume = 120 in.³ ;
                     L  = length  =  8 in.
                     w = width   =  ??
                     h = height  =  1.5 in.
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We want to solve for "w" (width) ;
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Given the formula:
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   V = L * w * h ; 
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Rewrite the formula; by dividing EACH SIDE of the equation by
   "(L * h)" ; to isolate "w" on one side of the equation;
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  →  V / (L * h) = ( L * w * h) / (L * h) ; 

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     →  V / (L * h) =  w ; 

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Answer:

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Step-by-step explanation:

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Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?
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Answer:  The answer is (B).


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For (A): The order of the matrix is 2 × 1. If we multiply this matrix by a vector matrix of order 1 × 2, then the resulting matrix will be of order 2 × 2, which is not a vector matrix.

For (B): The order of the matrix is 3  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 3 × 1, which is a new vector matrix.

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