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
Dafna11 [192]
3 years ago
7

In triangle PQR, Q=72 degrees, R=32 degrees and PR=12. find PQ

Mathematics
1 answer:
Volgvan3 years ago
6 0

Answer:

6.69 to the nearest hundredth

Step-by-step explanation:

Use the law of sines

Let x = PQ

\frac{sin 72}{12}  = \frac{sin 32}{x}

x sin 72 = 12 sin 32

x = \frac{12 sin 32}{sin 72}

x = 6.69 to the nearest hundredth

You might be interested in
Draw a two-card hand from a well-shuffled standard deck of cards. Given that the first card is a King, what is the chance the se
Leni [432]

Answer:

P ≈ 0,94

Step-by-step explanation:

The normal deck of cards consists of  52 cards, (with 4 kings )

If we take a king a deck will have 51 cards ( three kings )

The probability to get a non-king card is

Probability of non-king card (P)  = 1 - Probability of getting a king card (P₁)

Probability of getting a king card  P₁= 3/51 ≈ 0,059

Then P = 1 - 0,059

P ≈ 0,94

7 0
3 years ago
Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average. Margie wants to k
mojhsa [17]

Answer:

0.6804

Step-by-step explanation:

Given that Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average.

Since each trial is independent and there are two outcomes, X no of good serves is binomial with n=6 and p =2/3

Required probability

= Prob that atleast four of 6 times good serve

=P(X\geq 4)

=P(x=4,5 or 6)\\=1-F(3)\\=0.6804

Formula used:

P(X=r) =6Cr (\frac{2}{3}^r )(\frac{1}{3}^{6-r}  )

7 0
3 years ago
Read 2 more answers
Help I need to go to school in like 10 minutes
Vsevolod [243]
You just have to divide numbers, you can use a calculator too. 
8 0
4 years ago
(08.01 MC)
UkoKoshka [18]

Answer:

<h2><u><em>6 feet</em></u></h2>

Step-by-step explanation:

Find the height of a square pyramid that has a volume of 8 cubic feet and a base length of 2 feet

Volume v = 1/3*a²h

inverse formula

8 = 1/3 * 2² * h

8 = 4 h /3

divide both the sides by 4

<u><em>h = 6 feet</em></u>

4 0
2 years ago
Tickets to a school play cost $3 for students and $8 for adults. on opening night, $1,000 was collected and 150 tickets sold. us
Salsk061 [2.6K]
S+a=150
3s+8a=1000
a=-s+150
3s-8s+1200=1000
-5s=-200
s=40
a=110
40 student and 110 adult tickets were sold
6 0
4 years ago
Other questions:
  • Agustina made a scaled copy of the following quadrilateral. She used a scale factor less than 1.What could be the length of the
    7·2 answers
  • The _____ is measure of a country's total economic output
    5·1 answer
  • Jill measured the length of her eraser. She wrote 5 on her paper without the unit. Which metric unit of measure should Jill incl
    7·2 answers
  • Simplify. 6a - {b - [3a - (2b + c) + 4a - (a + 2b - c)]}.
    13·1 answer
  • Write an expression for " x divided by nine".<br><br> Please help!!<br><br> 10 POINTS
    6·2 answers
  • D=22/7×d-90 Solve the equation<br>Find D​<br>Fast!
    13·2 answers
  • HEEEEEELLLPPPPPPPPP!!!!!!!!!!!!!!
    6·2 answers
  • Solve the following system of equations: y=x + 2 and y= 2x - 1
    6·2 answers
  • In the figure above, RT = TU. What is<br> the value of x ?<br> A) 72<br> B) 66<br> C) 64<br> D) 58
    12·1 answer
  • What is the probability of a passenger on the titanic ship surveying given they were in first class?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!