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Mandarinka [93]
3 years ago
9

Find the measures of the numbered angles of the parallelogram.

Mathematics
1 answer:
frosja888 [35]3 years ago
6 0

Answer:

1=40

2=140

3=40

Step-by-step explanation:

We know on side

140 and side 2 are equal

1 and 3 are equal

So since 140 and 2 are equal

140*2=280

360 degrees total in any 4 sided shape

360-280=80

80/2=40

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Find [4(cos15° + isin15°)]^3 and express it in a + bi form.
AleksandrR [38]

Answer:

see explanation

Step-by-step explanation:

Using De Moivre's theorem

Given

[ 4(cos15° + isin15° ) ]³, then

= 4³ [ cos(3 × 15°) + isin(3 × 15°) ]

= 64 (cos45° + isin45° )

= 64 (\frac{\sqrt{2} }{2} + \frac{\sqrt{2} }{2} i )

= 64 (\frac{\sqrt{2} }{2} (1 + i) )

= 32\sqrt{2} (1 + i)

= 32\sqrt{2} + 32\sqrt{2} i

5 0
3 years ago
A ball weighs 15 pounds on Earth and 5.7 on Mars. What is the constant proportionality between the weight of an object on Mars a
Diano4ka-milaya [45]
Mars is about 2.3 times less weight
6 0
3 years ago
What is the inverse of the function f(x) = x +3?
MAXImum [283]

Answer:

f⁻¹(x) = x - 3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Functions
  • Function Notation
  • Inverse Functions

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = x + 3

<u>Step 2: Find</u>

  1. Swap:                                                                                                                 x = y + 3
  2. [Subtraction Property of Equality] Isolate <em>y</em>:                                                      x - 3 = y
  3. Rewrite:                                                                                                             f⁻¹(x) = x - 3
6 0
3 years ago
A newborn baby weighs 8 pounds and decreases his weight by 5% every week how much does the baby weigh after 20 weeks?
Feliz [49]

Answer:

in 20 weeks the baby will weigh nothing and is definitely dead

Step-by-step explanation:

5% of 8 is . 4

.4 x 20 is 8

5 0
3 years ago
Read 2 more answers
Donald has a bunch of nickels and dimes in his piggy bank. There are 100 coins in the bank that make a total of $6.60 in change.
brilliants [131]

Answer:

78 nickels and 22 dimes

Step-by-step explanation:

Nickels = n, Dimes = d

<u>Number of coins = 100</u>

  • n + d = 100

<u>Total sum in the piggy bank = $6.60 </u>

  • 5n + 10d = 660

<u>Consider the first equation in the second:</u>

  • 5(100 -d) + 10d = 660
  • 500 - 5d + 10d = 660
  • 5d = 110
  • d = 110/5
  • d = 22
  • n = 100 - 22
  • n = 78

<u>Answer:</u> nickels 78 and dimes 22

8 0
3 years ago
Read 2 more answers
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