1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PolarNik [594]
3 years ago
6

Evaluate 10.3v + 9.9w when v = 7 and w = 8​

Mathematics
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer:

151.3

Step-by-step explanation:

You might be interested in
1/2x = –1/2x results. What is the value of x?
fgiga [73]
The result of x is nevative one
5 0
3 years ago
Please show work and thank youuu
Assoli18 [71]

Answer:  6\sqrt{3}

======================================================

Explanation:

Method 1

We can use the pythagorean theorem to find x.

a^2+b^2 = c^2\\\\6^2+x^2 = 12^2\\\\36+x^2 = 144\\\\x^2 = 144-36\\\\x^2 = 108\\\\x = \sqrt{108}\\\\x = \sqrt{36*3}\\\\x = \sqrt{36}*\sqrt{3}\\\\x = 6\sqrt{3}\\\\

-----------------------------------

Method 2

Use the sine ratio to find x. You'll need a reference sheet or the unit circle, or simply memorize that sin(60) = sqrt(3)/2

\sin(\text{angle}) = \frac{\text{opposite}}{\text{hypotenuse}}\\\\\sin(60^{\circ}) = \frac{x}{12}\\\\\frac{\sqrt{3}}{2} = \frac{x}{12}\\\\x = 12*\frac{\sqrt{3}}{2}\\\\x = 6\sqrt{3}\\\\

-----------------------------------

Method 3

Similar to the previous method, but we'll use tangent this time.

Use a reference sheet, unit circle, or memorize that tan(60) = sqrt(3)

\tan(\text{angle}) = \frac{\text{opposite}}{\text{adjacent}}\\\\\tan(60^{\circ}) = \frac{x}{6}\\\\\sqrt{3} = \frac{x}{6}\\\\x = 6\sqrt{3}\\\\

-----------------------------------

Method 4

This is a 30-60-90 triangle. In other words, the angles are 30 degrees, 60 degrees, and 90 degrees.

Because of this special type of triangle, we know that the long leg is exactly sqrt(3) times that of the short leg.

\text{long leg} = (\text{short leg})*\sqrt{3}\\\\x = 6\sqrt{3}\\\\

The short leg is always opposite the smallest angle (30 degrees).

3 0
2 years ago
The change of base formula is used to calculate a wider range of logarithms. True False
juin [17]
Your answer would be 

True

Hope I helped!
6 0
4 years ago
Read 2 more answers
HELP WITH 4 QUESTIONS!!!!
m_a_m_a [10]

When dilation is about the origin, as it is here in every case, the image point coordinates are the original (pre-image) coordinates multiplied by the scale factor.

1. Multiply every coordinate value by 5:

... W' = (-5, 10), X' = (-15, -5), Y' = (25, -5), Z' = (15, 10)

2. Multiply every coordinate value by 1/3:

... A' = (-2, 5), B' = (0, 5/3), C' = (1, 10/3)

3. A' = (2, 8), B' = (6, 2), C' = (2, 2)

4. The image coordinates are 5 times the original coordinates, so ...

... the scale factor of the dilation is 5.

5 0
3 years ago
Consider functions f and g below.
dedylja [7]

You need to change the sign of all terms of g(x) and then combine the like terms and simplify your answer.

Step-by-step explanation:

Since the functions f(x) and g(x) are missing in the question, I will explain it with my own example and you can solve it with your functions.

Let f(x)= 2x^2+3x+4

and g(x) = 4x^2+9x-6

We need to find f(x)-g(x)

Solving:

f(x)-g(x)=2x^2+3x+4-(4x^2+9x-6)

f(x)-g(x)=2x^2+3x+4-4x^2-9x+6

f(x)-g(x)=2x^2-4x^2+3x-9x+4+6

f(x)-g(x)=-2x^2-6x+10

So, you need to change the sign of all terms of g(x) and then combine the like terms and simplify your answer.

Keywords: Composite Functions

Learn more about Composite functions at:

  • brainly.com/question/2456302
  • brainly.com/question/1949601
  • brainly.com/question/1869697
  • brainly.com/question/1900154

#learnwithBrainly

7 0
4 years ago
Other questions:
  • Write the equivalent decimal and fraction for each percent.
    12·1 answer
  • If a car is depreciated in four years, what's the rate of depreciation using twice the straight-line rate?
    5·2 answers
  • Help please, thanks. If you can describe how to solve it then that would be very helpful. But if you can't then no worries.
    6·1 answer
  • Is y= 19x - 5 proportional or non-proportional
    15·2 answers
  • solve the system of linear equations algebraically using the elimination method: 3x+y=19 and 4x+3y=26
    13·1 answer
  • Todd's fish tank holds 40 gallons. How many quarts does the fish tank hold?
    8·1 answer
  • Find the common ratio for the following sequence.<br><br> 1/2, -1/4, 1/8, -1/16, ...
    8·2 answers
  • Stanley wants to collect 900 sports cards . so far,he has collected 438 baseball cards .how many more cards does Stanley need to
    7·2 answers
  • A rectangular garden has a width of 7x -2 and a length of 3x +10. Find the perimeter.
    5·2 answers
  • If you can expplain
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!