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3 years ago

Which is the best definition of an isosceles triangle

Mathematics

2 answers:

Setler [38]3 years ago

5 0

A triangle that has at least two congruent sides!

Nataly_w [17]3 years ago

4 0

Answer:

Option 1 is correct.

Step-by-step explanation:

To find: Correct definition of Isosceles triangle

Isosceles triangles are the triangle whose 2 side are equal.

Option 1:

A triangle that has at least two congruent side.

congruent means equal.

Here, triangle has at least 2 equal side which is of isosceles triangle.

Thus, this option is correct.

Option 2:

A triangle in which no 2 sides are congruent.

Here it is said that no two sides are equal this contradict the fact of isosceles having two equal side.

Thus this option incorrect.

Option 3:

A triangle that has three congruent sides.

Here All 3 sides of triangle are equal. this implies triangle is an equilateral triangle not the isosceles triangle.

Thus, this option is incorrect.

Therefore, Option 1 is correct.

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Lf 7 + 3x = 22. then 2x = ?

Sloan [31]

Answer:

2x = 10

Step-by-step explanation:

7 + 3x = 22

-7 -7

Subtract 7 from both sides (you are trying to get the variable alone, and to do that, you have to get every other number to 0. <em>7 - 7 = 0</em>. BUT, whatever you do, you have to do to both sides.)

3x = 15

/3 /3

Divide both sides by three to get the variable alone.

x = 5

Now, plug in the value of x to the second equation and solve.

2(5) = ? --> 10

3 0

3 years ago

Three cyclists simultaneously start their movement from the same point at 7 am. Their routes take 10 minutes, 25 minutes and 15

Arisa [49]

Answer:

The 3 cyclists will meet at the starting point again after 150 minutes.

Step-by-step explanation:

Since they start at the same point but then take different times to each route, then to find the first time they will each meet at the starting point, we have to find the lowest common multiple (LCM).

Let's use prime factorization to get it.

Prime factorization of 10 = 2 × 5

Prime factorization of 15 = 3 × 5

Prime factorization of 25 = 5 × 5

Thus,super set = 2, 3, 5, 5

Thus,LCM = 2 × 3 × 5 × 5 = 150

Thus,the 3 cyclists will meet at the starting point again after 150 minutes.

4 0

3 years ago

find to consecutivephone number such that five times the smaller number plus 3 times the greater number make 59 hint let the num

Scorpion4ik [409]

Answer:

x = 7 is the answer for the smaller number

7 + 1 = 8 is the answer for the larger number

Step-by-step explanation:

LET x and x+1 be the two numbers here, as your hint suggests.

5x + 3(x+1) = 59

5x + 3x+3 = 59

8x = 59-3

8x = 56

/8 /8

--------------------------

x = 56/8 ---> x = 7

x = 7 is the answer for the smaller number

7 + 1 = 8 is the answer for the larger number

Check:

5 * 7 + 3 * 8 = 59

35 + 24 = 59

59 = 59 CORRECT

7 0

3 years ago

Two angles are supplementary. The first angle has 20 degreesmore the second angle. How ma y degrees are in each angle?

Vanyuwa [196]

Answer:

100 and 80

Step-by-step explanation:

Let x = be the first angle

x-20 is the second angle

They are supplementary so they add to 180

x+x-20 = 180

Combine like terms

2x-20 =180

2x-20+20 =180+20

2x= 200

Divide by 2

2x/2 = 200/2

x= 100

The first angle is 100 and the second is x-20

x-20 = 100-20=80

The two angles are 100 and 80

3 0

3 years ago

Katrina buys a 40-ft roll of fencing to make a rectangular play area for her dogs. Use 2(l+w)=40 to write a function for the

Anuta_ua [19.1K]

Why you write hi this needs to anser!!

8 0

3 years ago