11*57+X(1+2+3+.....+56)
=11*57+X(1+56)*56/2
=627+1596X
=19779
X=(19779-627)/1596=12
Your answer is C
Answer:
D: (-6,4), R:(1,6)
Step-by-step explanation:
The domain is asking for how far the line goes across the x-axis.
The range is asking for how far the line goes across the y-axis.
Hope this helped
Answer:
6.45
Step-by-step explanation:
6.9-6.0=0.9
0.9÷2=0.45+6=6.45
This is the middle between 18 and 21.
Hope this helps and give brainliest, thank me and rate it 5 please. :)
<em>(x - 5)(x + 5)</em>
- Step-by-step explanation:
<u><em> use formula </em></u>
<em>a² - b² = (a - b)(a + b)</em>
<em />
<em>x² - 25 = x² - 5² = (x - 5)(x + 5)</em>
Donte did a mistake that 'he did not apply the distributive property correctly for 4(1 3i)' option (A) is correct.
<h3>What is a complex number?</h3>
It is defined as the number which can be written as x+iy where x is the real number or real part of the complex number and y is the imaginary part of the complex number and i is the iota which is nothing but a square root of -1.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have an expression:
= 4(1 + 3i) – (8 – 5i)
= 4 + 12i - 8 + 5i
He did not distribute the subtraction sign correctly for 8 – 5i.
= -4 + 17i
Thus, Donte did a mistake in that 'he did not apply the distributive property correctly for 4(1 3i)' option (A) is correct.
Learn more about the complex number here:
brainly.com/question/10251853
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