Whay maked this statement true ?7-^2=?
2 answers:
Remember the following:
-ve * -ve = +ve
-ve * +ve = -ve
x² = x * x
x⁻² =
Now, for the given:
1- If the given equation is -(7)², then:
-(7)² = - (7*7) = -49
Therefore,, -49 would make this statement true.
2- If the given equation is (-7)², then:
(-7)² = (-7) * (-7) = 49
Therefore, 49 would make this statement true
3- If the given equation is 7⁻², then:
7⁻² =
Therefore,
would make the statement true.
Hope this helps :)
-ve * -ve = +ve
-ve * +ve = -ve
x² = x * x
x⁻² =
Now, for the given:
1- If the given equation is -(7)², then:
-(7)² = - (7*7) = -49
Therefore,, -49 would make this statement true.
2- If the given equation is (-7)², then:
(-7)² = (-7) * (-7) = 49
Therefore, 49 would make this statement true
3- If the given equation is 7⁻², then:
7⁻² =
Therefore,
Hope this helps :)
You might be interested in
Answer: The length and width are 50 and 30 meters (or 30 and 50 meters).
Step-by-step explanation:
To solve this question, we can represent variables for the length and width in two equations.
To solve for one of the variables, you'll have to substitute one of the variables, so solve for one of them:
Now, we have a standard quadratic equation that we can factor. When factoring, you'll get this:
This tells us that the width could be either 50 or 30.
Substitute 50 into one of the equations to find the length:
2 (l) + 100 = 160
l = 30.
The length and width are 50 and 30 meters (or 30 and 50 meters).
Answer:
y = 6x - 13
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (2, - 1) and (x₂, y₂ ) = (1, - 7)
m = =
= 6, thus
y = 6x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (1, - 7), then
- 7 = 6 + c ⇒ c = - 7 - 6 = - 13
y = 6x - 13 ← equation of line