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dem82 [27]
3 years ago
8

Calculate.

{4} }" alt="\sqrt{(-4.5)^{4} }" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
hichkok12 [17]3 years ago
5 0

Answer:

Step-by-step explanation:

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Simplify the following expression into the form a + bi, where a and b are rational numbers.
vagabundo [1.1K]
The answer is -16 - 10i.

Using the distributive property on the first part, we have:
-2i*7--2i*4i + (3+i)(-2+2i)
-14i+8i² +(3+i)(-2+2i)

Using FOIL on the last part,
-14i+8i²+(3*-2+3*2i+i*-2+i*2i)
-14i+8i²-6+6i-2i+2i²
-10i+8i²-6+2i²

Since we know that i = -1,
-10i+8(-1)-6+2(-1)
-10i-8-6-2
-16-10i
7 0
3 years ago
Read 2 more answers
A local concert promoter purchases 2 3/4 pages of ads. When one of the concerts is cancelled, the promoter cancels 1 5/8 pages o
Lynna [10]

Answer:

1\frac{1}{8} pages

Step-by-step explanation:

Since the concert promoter started with 2 \frac{3}{4} pages of ads but had to cancel 1 \frac{5}{8}, subtracting the cancelled amount from the original amount will give the amount of advertising space the promoter is now actually using:

 2 \frac{3}{4}  = 2 \frac{6}{8}

- <u>1 \frac{5}{8}</u>      - <u>1 \frac{5}{8}</u>

     1\frac{1}{8} pages

In order to subtract fractions, you need to have like denominators, so you need to convert \frac{3}{4} into an equivalent fraction with a denominator of '8'.  Since 4 x 2 = 8, then you also need to multiply the numerator by the same factor: 3 x 2 = 6.

5 0
3 years ago
There's some creepy and weird noise coming from my mom and dad's room and I think they're in trouble, what should I do????
tatyana61 [14]

Answer:

Leave em alone or go be noisy?

Step-by-step explanation:

3 0
3 years ago
Find the slope-intercept form of the equation of the line that has the given properties (m is the slope). passes through (2, 2);
Mkey [24]
Y = -1x+b
replace x and y to find b
2 = -1*2+ b
b = 4

Final:
y = -1x + 4
7 0
3 years ago
P(x) = 5x4 + 7x3 – 2x2 – 3x + c<br> C=
Ghella [55]

Answer:

c=Px−5x4−7x3+2x2+3x

Step-by-step explanation:

Solve for

c

by simplifying both sides of the equation, then isolating the variable.

5 0
3 years ago
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