<em>Answer:</em>
<em>x = 2√5</em>
<em>Step-by-step explanation:</em>
<em>Hi there !</em>
<em>x² = 20</em>
<em>x² = 4×5</em>
<em>x² = 2²×5</em>
<em>x = √2²×5</em>
<em>x = 2√5</em>
<em>Good luck !</em>
Answer:
The algebraic expression is "y - 7".
Step-by-step explanation:
"7 less" means "- 7", so you're subtracting 7 from y. You then write it as "y - 7".
Answer:
Step-by-step explanation:
Solving
5x + -2y = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2y' to each side of the equation.
5x + -2y + 2y = 12 + 2y
Combine like terms: -2y + 2y = 0
5x + 0 = 12 + 2y
5x = 12 + 2y
Divide each side by '5'.
x = 2.4 + 0.4y
Simplifying
x = 2.4 + 0.4y
Answer:
-8
Step-by-step explanation:
I looked it up on ma th way like the previous user said and got -8.
Notice that the triangle is a right isosceles triangle, because the given angle measures are 45° and 90°, so the third angle measure is 180°-90°-45°=45°.
The length of the hypotenuse is 24 ft. Let the side lengths of the 2 equal sides be
a.
By the Pythagorean theorem we have:

thus

divide both sides by 2, and take the square root:

The area of the triangle is given by the formula:
(1/2)*side*side, so the area of the triangle is :
(1/2)*

*

=144 (square units)
Answer: 144 square units