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
Zanzabum
2 years ago
7

10) A rhombus has a diagonal 8.6 mm long and an area of 81.7 mm. what is the perimeter?

Mathematics
1 answer:
BaLLatris [955]2 years ago
6 0

Answer:

P=41.72

Step-by-step explanation:

S=ACxDB/2

81.7=8.6xDB/2

81.7=4.3xDB|:4.3

19(mm)=DB

DO=19/2=9.5

OC=8.6/2=4.3

(O is the center of the rhombus, where two diagonals meet)

a²+b²=c² (DO²+OC²=DC²)

9.5²+4.3²=c²

90.25+18,49=c²

√108,74=√c²

c≈10.43

P=4c

P=4x10.43

P=41.72

Hope it helps:)

You might be interested in
Examine the following expression.
svetoff [14.1K]

Answer:

True expressions:

  • The constants, -3 and -8, are like terms.  
  • The terms 3 p and p are like terms.  
  • The terms in the expression are p squared, negative 3, 3 p, negative 8, p, p cubed.
  • The expression contains six terms.
  • Like terms have the same variables raised to the same powers.

Step-by-step explanation:

The expression is:

p² - 3 + 3p - 8 + p + p³

False expressions:

  • The terms p squared, 3 p, p, and p cubed have variables, so they are like terms.  (They don't have the same exponents)
  • The terms p squared and p cubed are like terms.    (They don't have the same exponents)
  • The expression contains seven terms. (It contains 6 terms)
6 0
3 years ago
Read 2 more answers
How long would it take you to double your money is the bank pays 3.6% interest, compounded
Lapatulllka [165]

Answer:

t=19.25\ years

Step-by-step explanation:

we know that

The formula to calculate continuously compounded interest is equal to

A=P(e)^{rt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest in decimal  

t is Number of Time Periods  

e is the mathematical constant number

we have  

t=?\ years\\P=x\\r=3.6\%=3.6/100=0.036\\A=2x  

substitute in the formula above

2x=x(e)^{0.036t}  

solve for t

simplify

2=(e)^{0.036t}  

Apply ln both sides

ln(2)=ln[(e)^{0.036t}]

Applying property of exponents

ln(2)=[0.036t]ln(e)

Remember that ln(e) =1

ln(2)=[0.036t]

t=ln(2)/[0.036]

t=19.25\ years

7 0
3 years ago
Helpp me pleasee (algebra)
antiseptic1488 [7]

Answer:

Step-by-step explanation:

answer = 1/2 r + m

m = 7

r = 8

answer = 1/2 * 8 + 7

answer = 4 + 7

answer = 11

8 0
3 years ago
Evaluate the equation: 1 2/3 - t = 1/4
Schach [20]
-1 5/12 You have to subtract one and 2/3 by one fourth and then take the negative from the tea and add it to your answer
7 0
2 years ago
Read 2 more answers
Determining the Scale Factor of a Dilation Consider the dilation of pentagon ABCDE by a scale factor of If AB = 12, then A'B' A&
barxatty [35]
<h3>Answer:</h3>

<u>If AB = 12units, then</u>

  • A'B' = 1/2 × 12 = 6units.

<u>If C'D' = 5units, then</u>

  • CD = 2 × 5 = 10units.

5 0
3 years ago
Other questions:
  • How to do a double number line
    5·1 answer
  • I have to write a sentence as a equation so what is the answer for Eight less than one third is -13
    14·1 answer
  • Joseph wants to buy a new tennis racquet which cost $200 from the factory. The sports shop marks up the price by 60%. Joseph bou
    7·1 answer
  • Find the area of the triangle. Round your answer to the nearest tenth.
    8·1 answer
  • Prove or disprove: For any odd integer x, (x^2 -1) is divisible by 8.
    8·2 answers
  • Ys is the perpendicular bisector of xz. What is the length of Xs if xz is 18 inches long?
    9·1 answer
  • How to you find the area of a trapezoid with multiple steps?
    12·1 answer
  • Find the measures of the interior angles of the triangle
    15·1 answer
  • Use the picture below to answer the question. The measure of angle 3 is 50 degrees. What is the measure of angle 6?
    9·1 answer
  • Help me out with this math problem for 50 points!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!