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
lutik1710 [3]
3 years ago
5

Logan is a land surveyor. He wants to determine d, the distance across a lake that cannot be directly measured. He draws this di

agram to help him.
A right triangle with side length 7 kilometers, d, and hypotenuse of 9 kilometers.

What is the approximate distance across the lake, to the nearest tenth of a kilometer?
5.7 km
6.3 km
11.4 km
16.0 km
Mathematics
2 answers:
Mice21 [21]3 years ago
7 0

Answer:

The first option     (5.7km)

Step-by-step explanation:

Since we have a right angle triangle and we know two of its sides we can easily find out the thirds side (the value of d) by using the Pathagoras Theorem. In our case 7 and d are our legs and the hypotenuse is equal to 9, so...

(Based on the Pathagoras Theorem)

c^{2} = a^{2}  + b^{2}

9^{2} = 7^{2} + d^{2}

d^{2} = 9^{2} - 7^{2} \\d^{2} = 81 - 49\\d^{2} = 32\\d = \sqrt{32}\\

d ≈ 5.7km

There for aproximate distance across the lake is equal to 5.7km

emmainna [20.7K]3 years ago
3 0

Answer:

A

Step-by-step explanation:

You might be interested in
I need help with number 46.
grigory [225]

Answer:

1:3

Step-by-step explanation:

1/3:1

We want the ratio with whole numbers

Multiply each side by 3

1/3*3 : 1*3

1:3

6 0
3 years ago
Select all the numbers that belong to the special sequence of square numbers.
ipn [44]

answer:

81

169

81 =9²

169=13²

7 0
3 years ago
What is 12x5-3x20 I'm having so much troubleee
Andrei [34K]
12×5=60 3×20=60
60-60=0 So the answer is 0
6 0
3 years ago
Read 2 more answers
50 POINTS!
ehidna [41]

Answer:

  • A. the distance between points W and X

Step-by-step explanation:

<u><em>Looking for the distance of 5 units</em></u>

A. the distance between points W and X

  • -3 - (-8) = -3 + 8 = 5
  • Correct

B. the distance between points X and Y

  • 1 - (-3) = 1 + 3 = 4 < 5
  • Incorrect

C. the distance between points X and Z

  • 5 - (-3) = 5 + 3 = 8 > 5
  • Incorrect

D. the distance between points Y and Z

  • 5 - 1 = 4 < 5
  • Incorrect

7 0
3 years ago
ASAP ASAP ASAP
Aleks04 [339]

Answer: 240cm cubed (the three)

Step-by-step explanation:

Length x width x height

6x4x10

7 0
2 years ago
Other questions:
  • You and two friends are playing basketball. You make 7 out of 15 shots. Your first friend makes 6 out of 10 shots and your secon
    7·1 answer
  • Plz help me and thank you
    9·2 answers
  • Item: The function f(x) is graphed below.
    13·2 answers
  • A binomial random variable X is defined as the number of successes achieved in the n trials of a Bernoulli process. Describe an
    9·1 answer
  • Please help me idk this
    8·1 answer
  • What is three blus six equal to <br><br><br><br>​
    9·2 answers
  • Help plz:)))I’ll mark u Brainliest
    6·1 answer
  • Can some help with this and maybe explain​
    10·1 answer
  • Which equations have 8 as a solution?
    14·2 answers
  • Help me I’m bad with this stuff
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!