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SSSSS [86.1K]
3 years ago
7

What two numbers add to make twenty and have a difference of four?

Mathematics
2 answers:
lina2011 [118]3 years ago
6 0
The two numbers that add itself to make the number 20 and to have a difference of the number 4 are the numbers 12 and 8.
lara [203]3 years ago
4 0
The two numbers that add to make twenty and have a difference of 4 are 12 and 8
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Value of the derivative of g(x)=8-10Cosx at 'x=0' is?
VLD [36.1K]

Answer:

g'(0) = 0

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

<u>Pre-Calculus</u>

  • Unit Circle

<u>Calculus</u>

  • Derivatives
  • Derivative Notation
  • The derivative of a constant is equal to 0
  • Derivative Property: \frac{d}{dx} [cf(x)] = c \cdot f'(x)
  • Trig Derivative: \frac{d}{dx} [cos(x)] = -sin(x)

Step-by-step explanation:

<u>Step 1: Define</u>

g(x) = 8 - 10cos(x)

x = 0

<u>Step 2: Differentiate</u>

  1. Differentiate [Trig]:                    g'(x) = 0 - 10[-sin(x)]
  2. Simplify Derivative:                   g'(x) = 10sin(x)

<u>Step 3: Evaluate</u>

  1. Substitute in <em>x</em>:                    g'(0) = 10sin(0)
  2. Evaluate Trig:                      g'(0) = 10(0)
  3. Multiply:                               g'(0) = 0
3 0
3 years ago
In AABC, the measure of ZC=90°, the measure of ZA=63°, and AB = 35 feet. Find the
irinina [24]

Answer:

40 feet

Step-by-step explanation:

bfhfbdjfbfufbfufbfhdjfhfbfudbdvdvdvdhdhdhdhdhdhdudbfufhf

8 0
3 years ago
Three high school participated in a study to evaluate the effectiveness of a new computer-based mathematics curriculum. Four 24-
snow_tiger [21]

Answer:

A) experimental

B)  The important factors are : Type of instruction, scores and  High schools,

   The factor levels are :

   Level -1 which comprises of  3 highschool,

   Level -2 which comprises of  highschool and the highschool has  4   sections   and each section has 24 students

   Factor level combinations:

  Level 1 : computer and standard based combination

C) Within the subject : 24 students

   Between subject : High school

D) score of the test

E) student

Step-by-step explanation:

A) The study is experimental because of the random assignment of two different types of instruction to the students which will control/affect the technique of teaching without just observing the performance of the students from the side

B) The important factors are : Type of instruction, scores and  High schools,

   The factor levels are :

   Level -1 which comprises of  3 highschool,

   Level -2 which comprises of  highschool and the highschool has  4   sections   and each section has 24 students

   Factor level combinations:

  Level 1 : computer and standard based combination

C) Within the subject : 24 students

   Between subject : High school

D) The dependent measure  is the score of the test

E) The basic experiment unit of the study is : student

 

8 0
3 years ago
I need 14 and 16 pls
lisov135 [29]

Answer:

Step-by-step explanation:

14 - If you add all she spent such as (1.95,30.00,7.50) then add it to what she has left over. You get $77.65

16-  (63 x 2)+63+6=195

7 0
3 years ago
Sue and Javier are working on a statistics project to estimate the proportion of students at their school who have a pet dog. Su
JulsSmile [24]

Answer:

E) The width of Sue's interval will be narrower than Javiers

Step-by-step explanation:

In confidence intervals, as sample size increases, the width of the confidence interval decreases.

5 0
3 years ago
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