Answer:
A. 3
Step-by-step explanation:
The answer would be A because 3 times 3 is 9 and 9-4=5 which is the value o f y. 3x-4=5
add 4 to both sides: 3x=5+4
simplify: 5+4=9
divide both sides by 3: x= 9/3
simplify 9/3 to 3:
x= 3
hope this helps!!
Note that a squared pyramid has a square base & 4 equal triangles.
To find the lateral the lateral area you calculate the area of the 4 equal triangles and to find the surface area (total Area) you add the area of the base:
Area of each triangle = side (5) x slant (9) and you divide by 2
==>Aera of 1 triangle = (9x5)/2 = 45/2 & for the 4 triangles
Lateral area = (45/2) x 4 = 90 in²
Now the base area (square) = 5 x 5= 25 in²
so the surface area = 90+25 = 115 in² (answer a)
7.5 × 10-4
That's the scientific notation answer ^
A I am pretty sure. I apologize if I am incorrect.
Answer:
Step-by-step explanation:
given
45 = 25m + b ( isolate the term in m by subtracting b from both sides )
45 - b = 25m ← divide both sides by 25
= m
