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
Fantom [35]
3 years ago
15

If the perimeter of a triangle is 10x + 5y and two of the sides are 3x + 4y and 5x − y, which is the third side? A. 2x + 2y B. 2

x + y C. −2x + 2y D. x + 2y
Mathematics
1 answer:
Vlad [161]3 years ago
5 0
The measures of two sides of a triangle are 3x + 4y and 5x - y. If the perimeter is 10x + 5y, find the measure of the third side. 

<span>Let measure of the 3rd side be 'b'. </span>

<span>Substitute the values of length of the two sides and perimeter in equation and solve for b. </span>

<span>So, 10x + 5y = 3x + 4y + 5x - y + b..........[Substitute the values] </span>
<span>10x + 5y = 8x + 3y + b </span>
<span>(10x + 5y) - (8x + 3y) = b </span>
<span>10x + 5y - 8x - 3y = b </span>
<span>10x - 8x + 5y - 3y = b </span>
<span>2x + 2y = b </span>

<span>So, the measure of the third side is 2x + 2y. </span>
You might be interested in
Lesley has $17 to spend, which she uses to buy a reference book. Write 2 points and solve an equation to show how much Lesley wi
Vikentia [17]

Answer:

LESLEY GETS ABSOLUTELY NOTHINGGGG

Step-by-step explanation:

6 0
2 years ago
Wpisz odpowiednie liczby: 1 cm2=...........mm2 9 cm2=...........mm2 5,2 cm2=............mm2 1 dm2 =...........cm2 17dm2=........
Tomtit [17]

Answer:

1 cm^2 = 100 mm^2

9 cm^2 = 900 mm^2

5.2 cm^2 = 520 mm^2


1 dm^2 = 100 cm^2

17 dm^2 = 1700 cm^2

4.3 dm^2 = 430 cm^2


1 m^2 = 10000 cm^2

7 m^2 = 70000 cm^2

2.5 m^2 = 25000 cm^2


1 km^2 = 1000000 m^2

50 km^2 = 50000000 m^2

8.5 km^2 = 8500000 m^2

Step-by-step explanation:

1 cm = 10 mm

1 cm^{2} = 10×10 mm^{2} = 100 mm^{2}

9 cm^{2} = 9×100 mm^{2} = 900 mm^{2}

5.2  cm^{2} = 5.20×100 mm^{2} = 520 mm^{2}


1 dm = 10 cm

1 dm^{2} = 10×10 cm^{2} = 100 cm^{2}

17 dm^{2} = 17× 100 cm^{2} = 1700 cm^{2}

4.3 dm^{2} = 4.3 × 100 cm^{2} = 430 cm^{2}


1 m = 100 cm

1 m^{2} = 100×100 cm^{2} = 10000 cm^{2}

7 m^{2} = 7×10000  cm^{2} = 70000 cm^{2}

2.5 m^{2} = 2.5×10000 cm^{2} = 25000 cm^{2}


1 km = 1000 m

1 km^{2} = 1000×1000 m^{2} = 1000000 m^{2}

50 km^{2} = 50×1000000 m^{2} = 50000000 m^{2}

8.5 km^{2} = 8.5×1000000 m^{2} = 8500000 m^{2}

3 0
3 years ago
Write an equation for the description.
Nesterboy [21]
Answer

x - 15 = 18

Explanation

X is the variable that is required to get the answer 18
8 0
2 years ago
Read 2 more answers
Please answer it now in two minutes
kodGreya [7K]

Answer:

s = 19.0

Step-by-step explanation:

To find s, use the Pythagorean Theorem.

a² + b² = c²

9² + b² = 21²

81 + b² = 441

b² = 360

b = √360

b = 18.97366596 ⇒ 19.0 (rounded to the nearest tenth)

So, s = 19.0.

Hope that helps.

4 0
3 years ago
What is the negative solution for (x+7)(x-3)=0 ?
Lorico [155]

Answer:

2+4-21

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Kennedy has 8 strawberry boxes that are each filled with strawberries. He eats 5 of
    5·2 answers
  • Consider the parametric curve:
    11·1 answer
  • What is the answer...?
    10·1 answer
  • What is 1.2x=6? And can You show me the work?
    10·2 answers
  • Which three numbers are greater then 0.716 and less then 0.9
    13·1 answer
  • Can someone please help me with this I'm on #5<br>​
    9·2 answers
  • Geometry help!! Find x and y.
    7·2 answers
  • Help me with this ASAP please!
    11·1 answer
  • HELP ASAP ILL GIVE BRAINLIST
    13·1 answer
  • 5^2 + 12^2 =13^2 true or false?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!