Answer:
75 degrees
Step-by-step explanation:
60 = 45= 75 = 180
Because every triangle has 180 degrees in it
Answer:
99
Step-by-step explanation:
8x-13+7x-17=180( because stright angle = 180 degree)
15x-30=180
15x=210
x=14
8(14)-13= 99
The expression which is equivalent to √(-9) is 3i.
<h3>What is Complex number?</h3>
A complex number is the sum of a real number and an imaginary number. A complex number is of the form a + ib and is usually represented by z.
Here, given expression;
y = √(-9)
y = √9 X √(-1)
y = 3√(-1)
y = 3i
Thus, the expression which is equivalent to √(-9) is 3i.
Learn more about Complex number from:
brainly.com/question/10251853
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4/7 × 3/4
(4 and 4 are cancelled )
7×3
the answer is 21