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2 years ago

Classify the triangle based on angle measures.

Mathematics

1 answer:

ki77a [65]2 years ago

7 0

Let's name these angles.

∠ A = 72°

∠ B = 54°

∠ C = 54°

Now, in this triangle, two angles, i.e., ∠ B and ∠ C are same.

According to the properties of triangle, sides opposite to two equal angles in a triangle are also equal, which means the two sides opposite to 54° in the figure will be equal.

=> AB = AC

Now, if there are two equal sides in a triangle then the triangle is called Isosceles Triangle.

So, the above triangle is an Isosceles Triangle.

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Tamara finds the sum of two number cubes rolled at the same time. The chart below shows all

Sveta_85 [38]

Answer:

Step-by-step explanation:

there are a possible 6 combinations for a sum of 7:

1,6

6,1

2,5

5,2

3,4

4,3

so we can create this proportion:

7/36 = n/216

n = # times to roll a sum of 7 out of 216

now cross-multiply:

36n = 1512

n = 1512/36

n = 42

7 0

2 years ago

1. x/6 + 4 = 15

Anestetic [448]

1. x/6 = 15 - 4
x = 11 × 6
x = 66

2. 2/7x = 3/14 - 1/7
2/7x = 3 - 2/14
2 = 7x/14
x = 4

3. 4+10 = x/2
14 × 2 = x
x = 28

8 0

2 years ago

A bag contains the following marbles: 4 black marbles, 14 blue marbles, 8 brown marbles, and 20 green marbles. What is the ratio

Diano4ka-milaya [45]

Answer:

14/8 or 14:8

Step-by-step explanation:

blue:brown=14:8

3 0

3 years ago

Which is the best description of the equivalency of the two expressions? Expression 1 Expression 2 5 x squared minus 2 x minus 4

lina2011 [118]

Answer:

The correct option is (D).

Step-by-step explanation:

The two expressions are:

$\text{Exp}_{1}=5x^{2}-2x-4+6x+3\\\\\text{Exp}_{2}=6x^{2}-6x+6-x^{2}+10x-7$

On simplifying both the expressions we get:

$\text{Exp}_{1}=5x^{2}+4x-1\\\\\text{Exp}_{2}=5x^{2}+4x-1$

Compute the value of both expressions for x = 2 as follows:

$\text{Exp}_{1}=5(2)^{2}+4(2)-1=27\\\\\text{Exp}_{2}=5(2)^{2}+4(2)-1=27$

The value of both expressions are same for x = 2.

Thus, the correct option is:

"They are equivalent because when x = 2, the two expressions have the same value."

6 0

2 years ago

Write an expression for 40% of 25

Montano1993 [528]

For this case we must find an expression to find 40% of 25. So, we make a rule of three:

25 -----------> 100%

x -------------> 40%

Where "x" represents the amount that determines 40% of 25.

$x = \frac {40 * 25} {100}\\x = 10$

40% of 25 is 10. And an expression to find it is:

$x = \frac {40 * 25} {100}$

Answer:

$x = \frac {40 * 25} {100}$

8 0

3 years ago

Read 2 more answers