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
ehidna [41]
3 years ago
12

A triangle has sides with lengths of 21 meters, 70 meters, and 73 meters. Is it a right triangle?

Mathematics
1 answer:
Elena-2011 [213]3 years ago
8 0

9514 1404 393

Answer:

  no

Step-by-step explanation:

It is close, but not exactly a right triangle.

If it were a right triangle, we would have ...

  21² +70² = 73²

We have instead ...

  441 +4900 ≠ 5329

  5341 ≠ 5329 . . . . . . . . not a right triangle

You might be interested in
Guys Help!! I Don´t Know How To Do This!!
Shkiper50 [21]

Answer:

Frank

Step-by-step explanation:

First let's start by calculating the speed of each runner.

Let's use feet per second

Frank's speed is already given in feet per second: 14 feet/second

We are given that Jake runs 382 feet in 38 seconds. To bring this down to feet/second we need to divide both numbers by 38.

382/38=10.05 feet/second (about)

We are given that Will runs 1 mile in 394 seconds. 1 mile is equivalent to 5280 feet. Now we divide both numbers by 394 to bring it down to feet/second.

5280/394=13.401  feet/second (about)

We are given that Ron runs 555 feet in 1 minute. 1 minute is equivalent to 60 seconds. Now we divide both numbers by 60 to bring it down to feet/second.

555/60=9.25 feet/second

After comparing all the speeds, we can conclude that Frank runs the fastest

5 0
3 years ago
Please help me with this
Ne4ueva [31]

Answer:

Option c

Step-by-step explanation:

A system of equations are given to us. And we need to solve them . The given system is

\begin{cases} y = 2x - 3\dots 1 \\ y = x^2 - 3\dots 2 \end{cases}

We numbered the equations here . Now put the value of equation 1 in equation 2 that is substituting y = 2x - 3 in eq. 2 .

\implies y = x^2 - 3 \\\\\implies 2x - 3 = x^2 - 3 \\\\\implies x^2 - 2x = 0 \\\\\implies x(x-2) = 0 \\\\\implies\red{ x = 0 , 2 }

We got two values of x as 0 & 2 . Alternatively substituting these values we have ,

\implies y = 2 x - 3 \\\\\implies y = 2(0)-3 \qquad or \qquad y = 2(2)-3 \\\\\implies y = 0-3 \qquad or \qquad 4 - 3 \\\\\implies \red{ y = -3 , 1 }

Thefore the required answer is ,

\red{Option\:c} \begin{cases} (0,-3) \\ (2,1) \end{cases}

4 0
3 years ago
Read 2 more answers
Please help me with this and I need the work shown out please
givi [52]
Please note that you have to use the reason vert. opp. angles to find x, hope it helps:)

5 0
3 years ago
Suppose Meagan would like to know when the costs are equal between the two companies. a) Write an equation that shows the costs
nadezda [96]
Let number of miles be x 

<span>when is </span>
<span>.5x + 25 = .25x + 30 </span>
<span>times 4 </span>
<span>2x + 100 = x + 120 </span>
<span>x = 20 </span>
4 0
3 years ago
PLEASE HELP It's for 10pts
Eduardwww [97]

Answer:

9x+2

Step-by-step explanation:

It's a simple problem, to find the perimeter, add a+b+c. In this case, it's with binomials, but it follows the same idea.

(2x+2)+(3x+1)+(4x-1)

2x+2+3x+1+4x-1

Combine like terms.

2x+3x+4x=9x

2+1-1=2

Left with 9x+2 as your perimeter binomial.

4 0
3 years ago
Other questions:
  • What’s the answer for <br> 8x+20=11x-31
    6·1 answer
  • Kira owes Mark $5, and Mark owes Kira $7. Which of the following statements means the same thing?
    10·1 answer
  • Please help!!!!! Math is very confusing and this makes no sense
    11·1 answer
  • Every real number has a reciprocal except for zero. This is because zero in the denominator is undefined. True or false
    14·2 answers
  • HELP I NEED 8 DONE TODAY <br> btw this is a writing assignment
    9·1 answer
  • 7. How many solutions does the given system have?
    14·2 answers
  • A banner ad created by Jonathan had CTR of 1.5% with 20,000 impression. How many people clicked on the banner ad
    9·1 answer
  • Write a rule for the nth term of the sequence.
    7·1 answer
  • The distance between two towns on a map is 6cm. The actual distance between two towns is 48 km. What is the scale on the map?
    9·1 answer
  • Divide:5.52 x 1031.2 x 105Write your answer in scientific notation. For example, you'd enter 2.3*10^4 for 2.3 x 104
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!