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
oksano4ka [1.4K]
2 years ago
15

How many dominos are needed to complete the triangle?

Mathematics
2 answers:
solong [7]2 years ago
5 0

Only 3 is needed

Step-by-step explanation:

Kamila [148]2 years ago
3 0

Answer:

B. 6

Detailed explanation:

<em>Alright, so using the Pythagorean theorem, </em>c^{2} =a^{2} +b^{2}<em> in this case, we have the "c" and "b" of the triangle. Therefor, we are looking for "a"</em>

<em>so, to solve the problem, simply begin by substituting what you already have:</em>

10^{2} =a^{2} +8^{2}

<em>Now that this is substituted, The next step is to go ahead and find the values after solving the exponents:</em>

10^{2} =100\\&#10;8^{2}=64

<em>Now, we need to find the value of "a".</em>

<em>In this case, we are provided with 4 options and one of them has to be correct.</em>

<u><em>If "a"=12 then "a squared" would equal 144.</em></u>

<u><em>the statement 100=144+64 is </em></u><u><em>incorrect.</em></u>

<u><em>If "a"=6 then "a squared" would be 36.</em></u>

<em>The statement 100=36+64 is </em><em>correct.</em>

<em>
</em><u><em>If  "a"=36 the "a squared" would be 1296.</em></u>

<u><em>The statement 100=1296+64 is </em></u><u><em>incorrect.</em></u>

<u><em>If "a"=18, then "a squared" would be 324.</em></u>

<u><em>The statement 100=324+64 is</em></u><u><em> incorrect.</em></u>

<u><em>Therefor, the answer is B.6</em></u>

<u><em></em></u>

Hope this helps ^-^

You might be interested in
128 POINTS IF YOU HELP
Aleksandr-060686 [28]
(A) We let y = the cost and are told x = the number of people. Since you pay $20 per person, the cost is 20x. That is, y=20x

(B) Again, let the cost =y and the number of people is given as x. You pay $10 per person or 10x plus an additional $50 for the room. That is, y=10x+50

(c) Link to graphs: https://www.desmos.com/calculator but if that doesn't work see the attachment for a screen shot. You just have to put the equations (type them) at left and the graph comes automatically.

(D) The admission price is the same when the two equations are equal. You can find this by setting them equal to each other as such: 20x = 10x+50 and solving for x. However, since you just graphed them the point of intersection (where the lines share/have the same point) gives the information. Remembers that (x,y) = (people, cost). The graphs intersect at (5, 100) so for 5 people the cost is the same and the cost is $100.

(E) For the regular rate we let x = 6 and solve for y (the cost). We get y = 20x which is y = (20)(6)=120. It costs $120 using the regular rate to take 6 people. Now let's use the equation for the group rate again with x = 6. Here we get y = 10x +50 or y = 10(6)+50 = $110. The group rate costs $110.

(F) The cost is the same at 5 people but if there are more than five the group rate is better as we saw in part E. So the regular rate is better for less than 5 people.

(G) Here y = $150. Let us use the group rate formula and solve for x (the number of people). 10x+50 = 150 so 10x = 100 and x = 10. Since 10 is more than 5 this is the better deal. However if you don't believe it or want to double check we can solve for x using y = 150 and the regular rate equation. We get: 20x = 150 so x = 7.5 Since we can't bring half a person we would only be able to bring 7 and that is less than 10 so this is not the best choice. Use the group rate and bring 10 people!

8 0
3 years ago
Read 2 more answers
6 &amp; 7 please help me show work please and thank you!
lara31 [8.8K]

Answer:

6. \frac{29}{15} or 1\frac{14}{15}

7. \frac{133}{96} or 1\frac{37}{96}

3 0
3 years ago
Carlos made a wooden box in his scout group. The box was 8 inches high, 11 inches wide and 15 inches long. Which expression will
Mamont248 [21]

Answer:

D. 8 x 11 x 15

Step-by-step explanation:

lenght times width times height  is how you find volume

8 0
3 years ago
Read 2 more answers
X to the power of two plus five x plus 4
Iteru [2.4K]

Answer: (x + 1) ( x + 4)

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A box contains 20 red marbles and 30 blue marbles. A second box contains 10 white marbles and 40 black marbles. If you choose on
Vesna [10]

Answer: 2/20, because all those marbles in total is 100. the blue and black marbles would be 70, if you simplify all of it it'd be 2/25.

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • The function f(x) is continous on the interval (-3, 4). If we know that f(-1) = 4 and f(3) = 7, what can we say about the output
    12·1 answer
  • What is the exact solution of e^x + 3 = 20
    12·1 answer
  • What does this equal?? Order of operations with integers
    6·1 answer
  • Y = x +4<br> 3x + y = 16
    7·1 answer
  • Simplify the following expression 6X2 plus 8X -3 minus 3X2-6
    14·1 answer
  • A rectangular prism with a volume of 5 cubic units is filled with cubes with side lengths of 1/3
    12·1 answer
  • In a survey of 850 students in a school, 90% reported having pets at home. If the margin of error is 3.4%, what is the interval
    11·2 answers
  • Need help thank you !
    7·2 answers
  • 12. Suppose you pay $3.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 1 or a 6, nothing
    11·1 answer
  • How do you solve x for a triangle with 33 and 38 degrees?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!