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3 years ago

The length of one side of a square field is represented by the expression 3-7x.

Mathematics

1 answer:

Juliette [100K]3 years ago

7 0

They give us the length of side of the square which is 3-7x.

To get an expression for the perimeter that is expressed as a product we have to multiply the expression 3-7x by four since every square has four sides. This will give us an expression of 4(3-7x). We than can use the distributive property to multiply everything inside the parenthesis by 4. This will give us an expression of 12-28x.

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The area of a rectangle is 33 m-, and the length of the rectangle is 5 m less than twice the width. Find the dimensions of the r

denis-greek [22]

Answer:

x = 9.25

y = 13.5

Step-by-step explanation:

area = 33

let length be y and width be x

2x - 5 = y

area of rectangle = length * breadth

(2x-5)(x)=33

2x²-5x=33

2x²-5x-33=0

solving quadratic equation

x = 9.25

y = 13.5

7 0

3 years ago

Please answer this question fast in 2 minutes

Stolb23 [73]

Answer:

(-20, 19)

Step-by-step explanation:

We need to use the Midpoint Formula, which says that given two points $(x_1,y_1)$ and $(x_2,y_2)$ , the midpoint is $(\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )$ .

Here, we are given one of the endpoints and the midpoint:

endpoint S = (5, -8)

midpoint M = (-7.5, 5.5)

Plug these into the formula. In $\frac{x_1+x_2}{2}$ , x1 = 5, and this whole expression is equal to -7.5:

$\frac{x_1+x_2}{2}=\frac{5+x_2}{2} =-7.5$

Solve for x2:

5 + x2 = 2 * (-7.5) = -15

x2 = -15 - 5 = -20

Now, let's find y2. y1 is just -8, and the entire expression for the y-coordinate of the midpoint is equal to 5.5. So:

$\frac{y_1+y_2}{2}=\frac{-8+y_2}{2} =5.5$

Solve for y2:

-8 + y2 = 2 * 5.5

-8 + y2 = 11

y2 = 11 + 8 = 19

The coordinates of T are thus (-20, 19).

<em>~ an aesthetics lover</em>

5 0

3 years ago

Is 3+2(2p+4t) equivalent to 4p+12t+6.

hammer [34]

\left[p \right] = \left[ -1.5 - 3.0\,t\right][p]=[−1.5−3.0t] is 3+2(2p+4t) equivalent

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3 years ago

The number of people in high school who attended football games on average increased by 65% from 2010 to 2012

Margaret [11]

Answer: 43.75

Step-by-step explanation

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3 years ago

How would i do this

Harman [31]

Answer:

It's very simple, all you have to do is round the place that is underlined. So for the first question, 6,9<u>9</u>5,000, the 3rd number there is underlined. (Which is the number 9) So you will have to round to the nearest ten thousand. The answer for number 1 is 7,000,000.

Step-by-step explanation:

7 0

3 years ago

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