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iren [92.7K]
4 years ago
6

Linear relations I need help on these two

Mathematics
1 answer:
melomori [17]4 years ago
4 0
a linear equation is an equation that may be put in the form where are the variables, and are the coefficients, which are often real numbers. The coefficients may be considered as parameters of the equation, and may be arbitrary expressions, provided they do not contain any of the variables.
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The width of a rectangle is 1 unit less than the length. The area of the rectangle is 72 units. What is the width, in units, of
denis-greek [22]

Answer:

Length=9 units\\width=8 units

Step-by-step explanation:

Width of the rectangle= W

Length= L

W=(L-1) units

Area= 72 square units

Area of a rectangle= Length*Width

72=L*(L-1)\\\\72=L^2-L\\\\L^2-L-72=0

Solving the quadratic equation using the factorization method:

L^2+8L-9L-72=0

Taking common from the equation:

L(L+8)-9(L+8)=0\\(L+8)(L-9)=0

L+8=0\\L=-8

OR

L-9=0\\L=9

The length cannot be negative, therefore: Length= 9 units

Width=Length-1\\=9-1\\=8 units

Length=9 units\\width=8 units

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3 years ago
Depending on the day of the week, a border guard searches every nth person coming across the border. Each Tuesday every 7th pers
zhannawk [14.2K]

the answer is "Systematic Random Sampling"

5 0
4 years ago
How do I write 4.110 in words
myrzilka [38]
Four and eleven hundreths
6 0
4 years ago
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3x-2y=4<br><br> How do you do this using common core ?
bixtya [17]
Graph 3x+2y=4.
3x+2y=4 3<span> x + 2 y = 4.</span>
Solve for y y .
<span>Since 3x 3 ⁢ x does not contain the variable to solve for, move it to the right side of the equation by subtracting 3x 3 ⁢ x from both sides.</span>
3 0
3 years ago
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The model shows the expression 30 + 12.
Slav-nsk [51]

Answer:

4rth   6(5+2)

Step-by-step explanation:

This is because 6 rows of 5 squares means that there is 6 rows with 5 squares each. 6 × 5 = 30. Then there is another set of 6 rows with 2 squares in each, which is 6 × 2 = 12. 30 + 12 = 42. Which is why 6(5+2) = 42. 6(5+2) = 6(5) + 6(2) = 6(7) = 6 × 7 = 6 + 6 + 6 + 6 + 6 + 6 + 6 or 7 + 7 + 7 + 7 + 7 + 7 or 5 + 5 + 5 + 5 + 5 + 2 + 2 + 2 + 2 + 2 + 2 = 42.

3 0
3 years ago
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