Answer:
The value of a is 50°.
Step-by-step explanation:
In an isosceles triangle, 2 sides have the same lengths and same angles so we can assume that the other side of the triangle is 65°.
Given that the total angle of a triangle is 180°, so have to subtract it :
Answer:
x = -5
Step-by-step explanation:
In both questions you want to get the x alone.
1.
-3x + (-6) = 9
First you want to add 6 to both sides so you'll be left with:
-3x = 15
Next, you want to divide both sides by -3 and you'll get:
x = -5
2.
-4x + (-12) = 8
You want to do the same thing as the first one so you'll add 12 to both sides:
-4x = 20
Then, you will divide both sides by -4 and get:
x = -5
Answer:
x = 5, 2
Step-by-step explanation:
x^2 = 7x - 10
x^2 -7x + 10 = 0
(x - 2)(x - 5) = 0
x = 5, 2
Answer:
D
Step-by-step explanation:
because b - 30 = s your buying something and subtacting from the money you had before
Answer:
156 inches^2
Step-by-step explanation:
The area of a triangle is 1/2 base x height
All of the triangles have a base of 6 inches and a height of 10 inches.
so 1/2 6 x 10= 30
There are 4 triangles with an area of 30 square inches
and then the square in the middle has a length of 6 in and a width of 6 in so it has an area of 36 in^2
so in total you would have 30+30+30+30+36, or 156
