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
mars1129 [50]
3 years ago
6

Mr. Littles is building a triangular sandbox using three boards. He already has two boards that measure 9 feet and 12 feet. Sele

ct all of the values that could represent the length of the third board of his triangular sandbox.
Mathematics
1 answer:
Bess [88]3 years ago
6 0

Answer:

  • 9 feet, 15 feet, 19 feet

Step-by-step explanation:

<u><em> Options are: </em></u>

  • <em>2 feet </em>
  • <em>3 feet </em>
  • <em>9 feet </em>
  • <em>15 feet </em>
  • <em>19 feet </em>
  • <em>21 feet </em>
  • <em>30 feet</em>

<em>-------------------------------------</em>

Use the triangle inequality theorem: sum of any two side must be greater than the third side by length

  • 2 feet     ⇒  no, as 2 + 9 < 12
  • 3 feet     ⇒  no, as 3 + 9 = 12
  • 9 feet     ⇒  yes
  • 15 feet    ⇒  yes
  • 19 feet    ⇒  yes
  • 21 feet    ⇒  no, as 9 + 12 = 21
  • 30 feet  ⇒  no, as 9 + 12 < 30

You might be interested in
Parallel line geometry
Igoryamba
<h3>Answer: Angle 1 is 80 degrees</h3>

==========================================================

Explanation:

See the diagram below. I've extended one of the rays to form a full line. This is shown in red. The alternate interior angles 60 and x are congruent due to the parallel lines, so x = 60.

We can then find angle y

x+y+20 = 180 ... angles of a triangle add to 180

60+y+20 = 180

y+80 = 180

y = 180-80

y = 100

Use this to find z

y+z = 180

100+z = 180

z = 180-100

z = 80

Or you could use the remote interior angle theorem

x+20 = z

60+20 = z

80 = z

z = 80

5 0
3 years ago
(-5x^6+7x+1)-(8x^2+x-10)<br><br> Algebra 1 subtracting polynomials please help
BaLLatris [955]

Answer:

-5x^6-8x^2+6x+11

Step-by-step explanation:

(-5x^6+7x+1)-(8x^2+x-10)

Remove parentheses

-5x^6+7x+1-(8x^2+x-10)

-(8x^2+x-10)=-8x^2-x+10

-5x^6+7x+1-8x^2-x+10

Simplify

-5x^6-8x^2+6x+11

5 0
3 years ago
Select the formula for the xth term of the sequence.<br> 3, 11, 19,
djyliett [7]

Answer:

8n - 15

Step-by-step explanation:

for finding the nth term we need to figure out the difference between the numbers:

3,11,19 = difference of 8

multiples of 8:

8,16,24,32,40...

the nth term would be 8n - 5 because in order to get to 3 from 8, we minus 5

8 0
3 years ago
The ratio of adult tickets sold to child tickets sold was 3:2, how many<br> child tickets were sold?
Makovka662 [10]

Answer:

3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What two numbers multiply to get -140 but add to get -4
dalvyx [7]
In order to get -140, one number has to be negative and one number has to be positive.  And these two numbers when added together give you a -4, which means the greater of these numbers has to be negative.

Try guess and check strategy by listing possible factor combinations for -140 and see which one works!
4 0
3 years ago
Other questions:
  • Write the equation of the line that passes through (−3, 5) and (2, 10) in slope-intercept form.
    12·2 answers
  • Can y'all help me with reducing fractions
    6·2 answers
  • Is 7/9 a rational number ?
    14·1 answer
  • Question 3 This questions requires you to examine computational differences for methods used to calculate sample variation. You
    5·1 answer
  • What is the circumference of a circle if the radius is 33 inches and pi is 3.14
    6·2 answers
  • Hi i need help 18-20
    10·1 answer
  • The ratio of clown fish to angel fish at a pet store is 5:4 . The ratio of angel fish to gold fish is 4:3. There are 60 clown fi
    12·1 answer
  • PLEASE HELP, i will give you brainliest
    8·1 answer
  • Can someone plz help this is my third time posting this question and I’m trying to get an 92
    14·2 answers
  • A gym has 2 Membership options, Option A, $5 per visit. Option B, pay $300 up front and $2 each visit. How many visits would it
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!