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malfutka [58]
3 years ago
11

Select all the tables that could represent proportional relationships.

Mathematics
1 answer:
aliya0001 [1]3 years ago
7 0
The answer would be C.
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Rain mixes with soil

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3 years ago
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X=2x1+3000x40+80x5000
lidiya [134]
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4 0
3 years ago
For the equation 21+3x=3x+k, which value of K will create a false equation with no solution
Nitella [24]

Answer:

OPTION B: K = 15

Step-by-step explanation:

The given equation is: 21 + 3x = 3x + K

Substitute K = 3x

we get: 21 = 3x + 3x + 3x

⇒ 21 + 3x = 6x

⇒ 21 = 3x

This gives the value of x = 7. That means K = 3x gives us a solution. So, OPTION A is eliminated.

Now, K = 15

The equation becomes 21 + 3x = 3x + 15

Subtracting 3x on both the sides, we get:

⇒ 21 + 3x - 3x = 15 + 3x - 3x

⇒ 21 = 15 which can not be correct. So, K = 15 renders the equation meaningless and hence with no solution.

So, OPTION B is the answer.

Note that K = 21 will give the equation with infinitely many solutions.

8 0
3 years ago
Jose drove 380 miles using 14 gallons of gas. At this rate, how many gallons of gas would he need to drive 418 miles?
PSYCHO15rus [73]
Hey there,
380 miles = 14 gallons
1 miles = 14 / 380
            = 7 / 190
418 miles = 7 / 190 x 418
                = 15.4 gallons.

Hope this helps :))

~Top
6 0
3 years ago
If a rectangle has side lengths 5x-y and x+4y what would be the area and perimeter of the rectangle?
Dafna1 [17]

Answer:

<em>Answer is</em><em> </em><em>given</em><em> </em><em>below with explanations</em><em>. </em>

Step-by-step explanation:

given \:  \: l = 5x - y \: and \: \:  b = x + 4y \\ area \: of \: rectangle \:= l \times b \: sq.units \\  = (5x - y)(x + 4y) \\  = 5 {x}^{2}  + 20xy - xy - 4 {y}^{2}  \\  = 5 {x}^{2}  + 19xy - 4 {y}^{2}  \\ perimeter \: of \: rectangle \\  = 2(l + b) \\  = 2(5x - y + x + 4y) \\  = 2(6x + 3y) \\  = 12x + 6y

<em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

6 0
4 years ago
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