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andreev551 [17]
3 years ago
12

Write a world sentence for the aquation x -14 = 52

Mathematics
1 answer:
ladessa [460]3 years ago
7 0

This equation would be read aloud as: "The difference between a number and fourteen is equal to fifty two."

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The sum of two angles is 90°. The difference of twice the larger angle and the smaller angle is 105º. The system of linear equat
denpristay [2]

Answer:

  • x = 65, y = 25

Step-by-step explanation:

<u>Given system of linear equations:</u>

  • x + y = 90
  • 2x - y = 105

<u>Add up the equations to eliminate y:</u>

  • x + 2x = 90 + 105
  • 3x = 195
  • x = 65

<u>Find y:</u>

  • y + 65 = 90
  • y = 90 - 65
  • y = 25
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2 years ago
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The tens digit of a certain number is five more than the units digit. The sum of the digits is 9. Find the number. Help! I need
JulsSmile [24]
The Answer is 27 because 2+7=9 and 7-2=5
7 0
2 years ago
I don't need you to work it out, just theorem(s) i need to reach the answer :)
VikaD [51]
Not sure why such an old question is showing up on my feed...

Anyway, let x=\tan^{-1}\dfrac43 and y=\sin^{-1}\dfrac35. Then we want to find the exact value of \cos(x-y).

Use the angle difference identity:

\cos(x-y)=\cos x\cos y+\sin x\sin y

and right away we find \sin y=\dfrac35. By the Pythagorean theorem, we also find \cos y=\dfrac45. (Actually, this could potentially be negative, but let's assume all angles are in the first quadrant for convenience.)

Meanwhile, if \tan x=\dfrac43, then (by Pythagorean theorem) \sec x=\dfrac53, so \cos x=\dfrac35. And from this, \sin x=\dfrac45.

So,

\cos\left(\tan^{-1}\dfrac43-\sin^{-1}\dfrac35\right)=\dfrac35\cdot\dfrac45+\dfrac45\cdot\dfrac35=\dfrac{24}{25}
7 0
3 years ago
1. For the function f(x) = 3x + 1, find f(-2). (substitute -2 in for x)
puteri [66]

Answer:

f(-2) = -5

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>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x + 1

f(-2) is x = -2

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    f(-2) = 3(-2) + 1
  2. Multiply:                               f(-2) = -6 + 1
  3. Add:                                     f(-2) = -5
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3 years ago
Guys u have to help me im trying for one hour
Tpy6a [65]

Answer:

12 is the answers for the question

Step-by-step explanation:

please give me brainlest

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2 years ago
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