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tiny-mole [99]
3 years ago
9

Add the complex numbers. (-2-4i)+(-12+7i) = ??

Mathematics
2 answers:
aliya0001 [1]3 years ago
7 0
(-2-4i) + (-12+7i)

= -2-3i -12 + 7i

= -14 + 4i
lions [1.4K]3 years ago
6 0

Question:

(-2 - 4i) + (-12 + 7i)

= -14 + 3i

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At a grocery store a cake was on sale for 20% off if the original price of the cake was c what is the sale price in terms of c
yuradex [85]

Answer:

0.80c

Step-by-step explanation:

'c' represents the original price.  20% off leaves 80% of c, which is the sales price:  0.80c

5 0
3 years ago
The difference between two numbers is 4. Three times the larger is 2 more than five times the smaller. Find the numbers.
Vitek1552 [10]

Let x represent the larger number.
Let y represent the smaller number.
x-y=4 Given
3x=5y-2 Given 
Now we can just substitute; let x=4+y 
Substitute 4+y for x in the second equation:
3(4+y)=5y-2
12+3y=5y-2
-2y=-14
y=7
Substitute back (into BOTH equations to double check work).
x, the larger number, is 11 
8 0
3 years ago
Read 2 more answers
Now evaluate. Substitute −2 for x in the composition f(g(x)) = 4x6 + 4x3 + 1, then simplify. f(g(−2)) =
Viktor [21]
F(g(-2))=4(-2)^6+4(-2)^3+1
f(g(-2))=4(64)+4(-8)+1
f(g(-2))=256-32+1
f(g(-2))=224+1
f(g(-2))=225
4 0
4 years ago
Read 2 more answers
Question 20 of 21
RoseWind [281]

Answer: A. (0,2)

Y-Intercept - (0,2)

No X-Intercept.

Step-by-step explanation: f(x)=2*3 is a horizontal line to the x-axis, which means that the y-intercept is (0,2) and is no x-intercept.

Hope this helps you out! ☺

7 0
3 years ago
Is the relationship between 7s in 7,742 ant the 7s in 7,785 different in anyway? Explain
melisa1 [442]
The relationship between the 7's is not different in any way because the sevens are all in the same place. The sevens are in the hundreds and thousands place.
4 0
3 years ago
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