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Serggg [28]
4 years ago
6

Sorry the quality kinda bad ! But help

Mathematics
1 answer:
True [87]4 years ago
5 0
A is the correct answer
when x=0, b to the 0th power is 1, f(x)=a*1=a
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Factor: x^{2} -10x-24
just olya [345]

Answer:

the answer to your question is (x+2) * (x-12)

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3 years ago
(b) The train is 61 cm long and travels at a speed of 18 cm/s.
xz_007 [3.2K]

Answer:

It goes 18 cm every second:

18 x 4 = 72 cm

The bridge is 72 cm long.

Hope this helps!

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3 years ago
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Use Euler's formula to write 3+3i^3 in exponential form.
Alex_Xolod [135]

21−=2(2−)=2cos(−1)+2 sin(−1)

−1+2=−1(2)=−1(cos2+sin2)=cos2+ sin2

Is the above the correct way to write 21− and −1+2 in the form +? I wasn't sure if I could change Euler's formula to =cos()+sin(), where is a constant.

complex-numbers

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edited Mar 6 '17 at 4:38

Richard Ambler

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asked Mar 6 '17 at 3:34

14wml

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Add a comment

1 Answer

1

No. It is not true that =cos()+sin(). Notice that

1=1≠cos()+sin(),

for example consider this at =0.

As a hint for figuring this out, notice that

+=ln(+)

then recall your rules for logarithms to get this to the form (+)ln().

8 0
3 years ago
Simplify:<br> (3)+(-4)<br> O A. -7<br> OB. 1<br> O c. 1<br> OD. 7
Lady bird [3.3K]

Answer:

-1

Step-by-step explanation:

(3) + (-4) =

4-3= -1

8 0
3 years ago
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Given that 4x-5y = 21 Find x when y = -4. Give your answer as a fraction in its simplest form.
alexira [117]

Answer:

x = 1/4

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<u> </u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

4x - 5y = 21

<em>y</em> = -4

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute in <em>y</em>:                                                                                                  4x - 5(-4) = 21
  2. Multiply:                                                                                                             4x + 20 = 21
  3. [Subtraction Property of Equality] Subtract 20 on both sides:                      4x = 1
  4. [Division Property of Equality] Divide 4 on both sides:                                  x = 1/4
6 0
3 years ago
Read 2 more answers
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