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3 years ago

Simplify the expression (-2+4i)-(2+7i) I am not great at these--

Mathematics

2 answers:

e-lub [12.9K]3 years ago

8 0

$( - 2 + 4i) - (2 + 7i) \\ ( - 2 + 4i) + ( - 2 - 7i) \\ - 2 + ( - 2) = - 4 \\ 4i + ( - 7i) = - 3i \\ - 4 - 3i$

Gre4nikov [31]3 years ago

3 0

(-2+4i)-(2+7i)
-2+4i+(-2-7i)
Remove ( )
-2+4i+-2-7i
-4+4i-7i
-4-3i Is the answer. Nope this helps.

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3 years ago

Find the 10th term of the geometric sequence 5, 25, 125, ...

daser333 [38]

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3 years ago

Read 2 more answers

For a regular 36-gon, what is the sum of measure of each interior angle?

ser-zykov [4K]

Answer:

170°

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2)

Here n = 36, thus

sum = 180° × 34 = 6120°

The size of each interior angle = $\frac{6120}{36}$ = 170°

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3 years ago

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igor_vitrenko [27]

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4 years ago

Write 1/4 as a fraction with 8 as the denominator. Then add the fraction to 3/8. What is the sum? Write the fractions and the an

a_sh-v [17]

Answer:

2/8, 5/8

Step-by-step explanation:

$\frac{1}{4}*\frac{2}{2} =\frac{2}{8} \\\\\frac{3}{8} +\frac{2}{8} =\frac{5}{8}$

Multiplying by 2/2 is like multiplying by 1, so it doesn't affect the value.

To add fractions with the same denominator just add the numerator, the denominator stays the same.

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3 years ago