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love history [14]
3 years ago
14

What’s the solution to this equation 2x+3=x-4

Mathematics
1 answer:
Illusion [34]3 years ago
3 0

Answer:

-7

Step-by-step explanation:

1. move the x to one side, (2x -1x)

2. new excuation is 1x+3=-4

3. minus 3 from each side (-4 - 3=-7)

4. -7÷1x= -7

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The sales tax on a one-half-carat diamond ring is $76. Find the purchase price of the ring (before tax) of the sales tax rate is
NISA [10]
So.. hmmm if we take "x" to be the 100% sale price before tax, $76 is really 9.5% of that

thus \bf \begin{array}{ccllll}
amount&\%\\
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76&9.5\\
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\end{array}\implies \cfrac{76}{x}=\cfrac{9.5}{100}

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5. The width of a row of identical townhouses,
Serjik [45]

Answer:

a. The value of the constant k is 21

b. The equation is y = k * x, where k is the proportionality constant, "x" is the number of terraced houses and "y" is the width of a row of identical houses.

Step-by-step explanation:

a.

<em>A proportional relationship satisfies the equation y = k * x, where k is a positive constant and is called a proportionality constant. In this case "x" is the number of terraced houses and "y" is the width of a row of identical houses. </em>

The data you have is that the width of 5 townhouses are 105 feet. This means that the value of "x" is 5 houses and the value of "y" is 105 feet. By replacing in the equation y = k * x and isolating the constant k, you get:

<em>105=k*5 </em>

k=\frac{105}{5}

<em>k=21 </em>

<u><em>So the value of the constant k is 21.</em></u>

b.

<em>As mentioned, the equation is y = k * x, where k is the proportionality constant, "x" is the number of terraced houses and "y" is the width of a row of identical houses.</em>

This means that just as "x" increases, "y" increases. And that if "x" decreases, "y" will decrease. And this relationship between "x" e "and" will always be the same, determined by the value of the constant "k".

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Answer:

1.4

Step-by-step explanation:

use distance formula

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olga_2 [115]
(5,3) is your answer to the problem your welcome
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