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
katrin2010 [14]
3 years ago
8

the legs of a right triangle have lengths of 28 meters and 21 meters. the hypotenuse has a lenght of 5x meters. what is the valu

e of x
Mathematics
2 answers:
Luba_88 [7]3 years ago
7 0
From the Pythagorean Theorem, we know that a^2+b^2=c^2
28^2+21^2=(5x)^2
784+441=25x^2
1225=25x^2
49=x^2
x=7
The length of the hypotenuse would be 35m.
ki77a [65]3 years ago
3 0
a=21 \ m , \ b=28 \ m , \ c=5x \ m \\ \\c^2 =a^2 + b^2\\ \\(5x)^2 =21^2 + 28^2\\ \\25x^2=441+784\\ \\25x^2=1225/:25\\ \\x^2=49\\ \\x=\sqrt{49}\\ \\x=7 \ m
You might be interested in
Write the number 1.6 x 105 in standard form
Natalka [10]

Answer:

168

Step-by-step explanation:

Multiply normally don't even look at the decimal point then look at how many numbers are after the decimal point after multiplying, then the many times the numbers are after the decimal point in both numbers you will place that decimal point that many places FROM the RIGHT.

3 0
3 years ago
Fifteen million four hundred and ten thousand five hundred<br>and sixty eight with commas​
Alinara [238K]
What you mean is this a question I don’t understand it
7 0
2 years ago
Read 2 more answers
Can somebody help me on these two
Zarrin [17]

to find the slope for the first one, use the formula \frac{y2-y1}{x2-x1}

(It's the slope formula)

so... 3=y2, 3=y1, 2=x2, 10=x1

then plug in... \frac{3-3}{2-10} =\frac{0}{-8} = 0

this line has a slope of 0


As for the miles problem, to find mph, the miles have to be at 1.

so... 4x=242\\x=60.5

therefore, he drove 60.5 mph

6 0
2 years ago
(4x^3 - x^2 +4x) + (x^3 -x^2 - 4x)
madreJ [45]

Answer:

5x³ - 2x²

Step-by-step explanation:

Step 1: Write out expression

4x³ - x² + 4x + x³ - x² - 4x

Step 2: Combine like terms (x³)

5x³ - x² + 4x - x² - 4x

Step 3: Combine like terms (x²)

5x³ - 2x² + 4x - 4x

Step 4: Combine like terms (x)

5x³ - 2x²

4 0
3 years ago
Can you please help im trying to get my grades higher so i can pass
Alex
I think 6 but I’m not sure also how I got this answer is by simplifying 3/2 to 1 and a half so than I did 7 and a half - 1 and a half
8 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please help me?
    10·1 answer
  • The population of Mexico in 2000 was approximately 103,970,000 and the land area was 761,700 square miles. The population increa
    7·1 answer
  • Please answer I need it!
    7·2 answers
  • A pizza company uses equation C = 15n to calculate the cost of buying a number of pizzas. What is the constant of proportionalit
    14·2 answers
  • Zero is not a real number True or <br>False​
    11·1 answer
  • Find the scale factor applied to figure A to produce figure B
    6·2 answers
  • 324.5 as scientific notation;<br><br> step by step explanation please
    11·2 answers
  • an owl travels 8 1/3 miles an hour and a seagull travels 12 1/2 miles in 2/3 hour. which animal is faster?
    8·2 answers
  • Find measure of n<br>..............​
    14·1 answer
  • Given that f(x) = 2x+4 and h(x) = x³, find (h o f)(1).<br> (hof)(1)=<br> (Simplify your answer.)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!