w - width
2w - length (l)
30 cm - perimeter
w + w + 2w + 2w = 6w - perimeter
The equation:
6w = 30 divide both sides by 6
w = 5 cm
2w = 2(5) = 10
l = 10 cm
The area of a rectangle: A = lw.
Substitute:
A = (5)(10) = 50
an additional $10 each week. Write an equation
that represents this.
Answer:
$80 + ($10×7) = $150
hope this is what you looking for
Indus
Yangtze
Tigris and Euphrates
Answer: s = 6 or s = -7
Step-by-step explanation:
Our task is to find the number. But first, let's write the equation:
The square of a number s plus the number is 42.
The square of s =
Plus s =
this equals 42:
Now, let's solve for s. Subtract 42 from both sides, and set the right-hand side equal to 0.
Now, let's factor it.
Think of two numbers that:
These numbers are 6 and -7.
So, the factored expression is :
(s + 6)(s - 7) = 0
Either s + 6 is 0 or s - 7 = 0.
We have two little equations that we can solve for s:
s + 6 = 0 s - 7 = 0
s = 0 - 6 s = 0 + 7
To find the number(s) that satisfy the equation x^2 + x = 42, you can factorize the quadratic equation (x + 7)(x - 6) = 0 and solve for x. The solutions are x = -7 and x = 6.
To find the number(s) that satisfies the equation, let's represent the number as 'x'. According to the question, the square of the number plus the number is equal to 42. This can be written as x^2 + x = 42. Rearranging the equation, we get x^2 + x - 42 = 0. To solve this quadratic equation, we can factorize it or use the quadratic formula.
Factoring the quadratic equation, we find (x + 7)(x - 6) = 0. Setting each factor equal to zero, we get x + 7 = 0 and x - 6 = 0. Solving these equations, we find x = -7 and x = 6.
Therefore, the number(s) that satisfy the equation are x = -7 and x = 6.
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