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
stepladder [879]
3 years ago
10

1/2 (a+b)-(a-b)2 what is the vule of the expression when a=18 and b=14

Mathematics
1 answer:
kirill115 [55]3 years ago
4 0

when \: a = 18 \: and \: b = 14 \\  \frac{1}{2} (18 + 14) - (18 - 14) ^{2}  \\  = 16 - ( {4}^{2} ) \\  = 16 - 16 \\  = 0
Hope this helps.
You might be interested in
Write an equation of the line below.
Veronika [31]

Answer: y=2x+2

Step-by-step explanation:

slope-intercept form: y=ax+b

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

#1 Find the slope

- Use rise/run to find the slope: 8/4=2

- Use slope formula: (2-(-6))/(0-(-4))=8/4=2

#2 Find the y-intercept

- Given the point (2, 0) it is already the y-intercept which is 2

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

a=2

b=2

y=2x+2

4 0
3 years ago
Which number is opposite of -5 in both its value and direction it lies on a number line?
ASHA 777 [7]

Answer:

The opposite of - 5 would be 5

Step-by-step explanation:

Because opposite number only means a number with an oposite sign

6 0
3 years ago
Dr,Goode prescribes 0.2 grams of cold medicine for Donald. This medicine comes in tablets that are 0.5 grams or 0.05 grams. Shou
e-lub [12.9K]

Using proportions, it is found that Donald should order 4 of the 0.05 gram tablets.

  • This question is solved by proportions, using a <em>rule of three</em>.
  • 4 tablets are needed, and they should combine for 0.2 grams. How many grams is there going to be on one tablet?

The <em>rule of three</em> is:

1 tablet - x grams

4 tablets - 0.2 grams

Applying cross multiplication:

4x = 0.2

x = \frac{0.2}{4}

x = 0.05

Donald should order 4 of the 0.05 gram tablets.

For more on proportions, you can check brainly.com/question/24372153

7 0
2 years ago
Ms. Pecho currently owes $637.50 simple interest
rusak2 [61]

Answer:

Step-by-step explanation:1

1/2 years which is 1 year and 5 months.

Explanation:

The formula for simple interest is

You can either substitute the given values first and the solve for

T, or you can transpose the formula to have

T as the subject.

T=100xSIPR

T=100 x 637.50

T=100×637.502500×17

T=1.5

As time is always in years, this means it was for

112 years which is 1 year and 5

months

6 0
3 years ago
Silvio is an air-traffic controller who must calculate the altitude of an incoming plane. He sees the plane at an angle of eleva
Mrac [35]
Since the problem is not telling us the height of Silvio, we are going to assume it is not relevant for our calculations.
Let h the altitude of the incoming plane. We know for our problem that the distance between Silvio and the tower is 3 miles, Also we know that the angle of elevation to the plane is 40°. With this information we can create a triangle as shown in the figure. We need a function that relates the angle of elevation with its opposite and adjacent sides, that function is tangent.
tan \alpha = \frac{opposite.side}{adjacent.side}
tan(40)= \frac{h}{3}
h=3tan(40)
h=2.5miles

We can conclude that we should use the trig function tangent to model this situation; also, we can conclude that the equation that describes this situation is h=3tan(40).

4 0
3 years ago
Other questions:
  • A. 12
    15·1 answer
  • The change from one number to the next in a geometric sequence is called
    9·1 answer
  • Please can someone help me solve this please​
    6·1 answer
  • 3(x+y)=7(y-x), 5(3x-y)=x+3​
    5·2 answers
  • Suppose that 1 euro is worth $1.25. In Europe, a book costs 19 euros. In Los Angeles, the same book costs $22.50. In which locat
    13·2 answers
  • What is an equation of a line with the given slope and y-intercept.<br><br> m = 2, b = 6
    14·1 answer
  • 8x + 6 + 2x = 12 + 4x​
    13·1 answer
  • 10. What is the missing statement in the proof?
    5·1 answer
  • The Russian ruble coin has a radius of 10.25 mm. What is the circumference in terms of Pi?
    15·2 answers
  • Someone pls help me I will make you as brain
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!