Your bases are like: they are both x. When you multiply like bases with exponents, you add the exponents together to get the new power. But you can't add those til you get a common denominator. That's 20. So your problem looks like this:
which gives you
. That's your answer!
Answer:
∠A = 45°
Step-by-step explanation:
◺ABC is a right angled triangle.
Sum of interior angles in a triangles is 180.
∠A + ∠B + ∠C = 180°
∠A + 90° + 45° = 180°
∠A = ( 180 - 90 - 45 )°
∠A = 45°
Note : -
□ is 90°
2g 1b because there's 2 girls and 1 boy
Answer:
x = 12.
Step-by-step explanation:
2x + 6 + 4x + 2 = 2(5x - 20) (The sum of the outer parallel sides = 2 * middle parallel line).
6x + 8 = 10x - 40
48 = 4x
x = 12.
The student's error was in first step where he added -0.72 instead of 0.72
Step-by-step explanation:
Given equation;
z + (-0.72) = -2.5
When solving for z, eliminate the other numbers from one side.
Step 1: z + (−0.72) + (−0.72) = −2.5 + (−0.72)
In this step, the student should have added 0.72 because -0.72 was already present in the equation and to eliminate it, he should have add same number with opposite sign.
According to this Step, -0.72 and -0.72 would have been added, because according to mathematics, two numbers with minus sign are added and the sign remains same.
The student's error was in first step where he added -0.72 instead of 0.72
Keywords: addition, subtraction
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