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
mash [69]
3 years ago
7

HELP PLEASE Will give brainliest if it helps.

Mathematics
1 answer:
AnnyKZ [126]3 years ago
6 0

Answer:

2x+23

Step-by-step explanation:

The perimeter of a triangle is calculated by adding the sum of all sides.

Therefore, in the given problem, the perimeter will be:

Perimeter = 21-x + 2x-3 + x+5

= 2x+23

You might be interested in
The angle of elevation to the top of a skyscraper is measured to be 2° from a point on the ground 1 mile from the building. How
Nadusha1986 [10]

See picture below for a geometric view.


Let x = height of building


We use basic trigonometry to find x.


The tangent function = opposite side of right triangle OVER adjacent side of right triangle.


tan(2°) = x/1


Solve for x.


After multiplying both sides by 1 (here 1 represents 1 mile), we get

tan(2°) = x.


We now use the calculator to find x.


In fact, you can take it from here. Use your calculator.


3 0
3 years ago
question 1 . Julia and ana have 7.20 ana have five times as much as Julia how much does each girl have
zloy xaker [14]
Julia has 1.44 and Ana has 5.76
7.20
1.44
7 0
3 years ago
Sylvia and Darlene collect seashells.
svlad2 [7]

Answer:

S = 60

Step-by-step explanation:

240 divided by 4 is equal to 60

5 0
2 years ago
On a given day 32 out of 220 people were selected for
Lena [83]

Answer:74

Step-by-step explanation: first you need to find the ratio so divide 220 by 32 to get 6.875 then didvide 510 by that same number and you will get 74. 18181818 but 74 because you can’t have a fraction of a person

7 0
3 years ago
X*2+1=10 then x=? Tell me the value of x
Trava [24]

Answer:

<h2>4.5</h2>

Step-by-step explanation:

x \times 2 + 1 = 10

2x +  1 = 10

Move constant to R.H.S and change its sign

2x = 10 - 1

Subtract the numbers

2x = 9

Divide both sides of the equation by 2

\frac{2x}{2}  =  \frac{9}{2}

Calculate

x = 4.5

Hope this helps..

Best regards!!

6 0
3 years ago
Other questions:
  • Bag A contains 3 red and 2 white marbles
    15·1 answer
  • Evaluate the expression 1000(2^1.9).... with no calculator
    9·1 answer
  • If a set of patio furniture costs $575 and the tax rate is 10%. They are having a sale of 25% off. How much will the furniture c
    12·1 answer
  • How do I divide numbers?
    14·2 answers
  • Given m||n, find the value of x. + (2x-26) (7x+8)​
    10·2 answers
  • Polygon ABCDE ~ Polygon FGHIJ<br> What is the scale factor of polygon ABCDE to polygon FGHIJ?
    12·1 answer
  • 2) On a certain day, the temperature
    8·2 answers
  • PLEASE HELP THIS IS DUE SOON A coordinate grid is used to make a map of the park. The location of the drinking fountain is (-4,
    5·2 answers
  • Write as an exponent with the base of b:<br> <img src="https://tex.z-dn.net/?f=%28b%5E%7B4%7D%20%29%5E%7Bm%7D" id="TexFormula1"
    15·1 answer
  • Which equation has a solution of r = 1/3
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!