Answer:
the answer is x=4
Step-by-step explanation:
5x-4=19
5x=16-4
5x=20
x=4. (dividing both sides by 5)
Answer:
let's go with 100 8 km
Step-by-step explanation:
because it's the highest number
Answer:
10
Step-by-step explanation:
Multiplying both sides by 14
2*3=h-(2*2)
6=h-4
h=6+4
h=10
The interior angles of any triangle must add up to 180° in measure. Right angles have measure 90°, so the missing angles in both triangles here have measure 45°.
In a 45°-45°-90° triangle, the legs and hypotenuse occur in a ratio of 1 : √2. This means
(1) <em>x</em> = 48 √2
(2) 88 = √2 <em>x</em> → <em>x</em> = 88 / √2 = 44 √2
You could also set up trigonometric equations to solve for <em>x</em> in each case:
(1) cos(45°) = 48 / <em>x</em> → <em>x</em> = 48 / cos(45°) = 48 / (1 / √2) = 48 √2
(2) cos(45°) = <em>x</em> / 88 → <em>x</em> = 88 cos(45°) = 88 (1 / √2) = 44 √2
Answer:
yes
Step-by-step explanation:
A difference of squares has the form a² - b² = (a - b)(a + b)
note that 36z² = (6z)² ⇒ a = 6z and 9 = 3² ⇒ b = 3
36z² - 9 is a difference of squares and factors as (6z - 3)(6z + 3)