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3 years ago

3+x=7 What does variable represent?

Mathematics

2 answers:

anygoal [31]3 years ago

8 0

Answer:

good morning here is your answer,

3+x=7

or, x= 7-3

or, x= 4

Orlov [11]3 years ago

4 0

Answer:

a variable is an unknown number by the way the answer is 4 too.

3+x=7

-3 -3

______

x = 4

subtract 3 on both sides to get x (the variable) by itself.

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Solve: y= -5 x= y + 3 what is the pair (_,_)

olga nikolaevna [1]

We are given $y=-5$ . Substituting, $x=y+3=-5+3=-2$ .

Thus, our ordered pair $(x, y)$ is $(-2, -5)$ .

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3 years ago

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An avid gardener is putting in a circular flower bed in the middle of their front lawn. They are

iren [92.7K]

Answer:

$335\:\text{ft}$

Step-by-step explanation:

The circumference of a circle is given by $C=2\pi r$ , where $r$ is the radius of the circle. Therefore, we can set up the following equation and solve:

$2\pi r=2107,\\r=\frac{2107}{2\pi},\\r\approx \boxed{335\:\text{ft}}$ (rounded to the nearest foot).

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3 years ago

A linear function has the same y-intercept as x + 4y = 8 and its graph contains the point (4, 3). Fill in the blank to find the

melamori03 [73]

Answer:

The y - intercept is (0, 4)

Step-by-step explanation:

The equation x + 4y = 8 is in 'standard form.' Any line parallel to this line has an equation that looks exactly the same EXCEPT for the constant.

So, let's write out x + 4y = 8 and replace the 8 with C.

x + 4y = C

Now take the coordinates of the given point (4, 3) and substitute them into the above equation: 4 + 4(3) = C = 16

Thus, the equation of the line passing through (4, 3) is x + 4y = 16.

To find the y-intercept, set x = 0 and calculate y:

0 + 4y = 16, or y = 4

The y - intercept is (0, 4)

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4 years ago

What is the length of the missing leg in the triangle below? 15yards 12yards

Nadya [2.5K]

Answer:

answer: 9

Step-by-step explanation:

Assuming this is the Pythagorean theorem the formula is a²+ b² = c² so we arent given a but we are given c so we have to work backwards c = 15 and 15 × 15 = 225 12 × 12 = 144 225 - 144 = 81 so Now we just have to figure out what multiplied by itself equals 81 therefore 9 is our answer because 9 × 9 = 81 Hope that helps!

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3 years ago

What is x? Please explain how you got it so I can understand for future questions.

Llana [10]

Answer:

$\boxed{x = 40}$

Step-by-step explanation:

Hey there!

Well angles like 142 and 2x + 22 equal each other because they are across from each other.

So we can set up the following,

142 = 3x + 22

Single out x

-22 to both sides

120 = 3x

Divide both sides by 3

x = 40

Hope this helps :)

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3 years ago

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