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3 years ago

Which of the following could be the lenght of the sides of a 30 -60 -90 degree triangle

2 answers:

3 0

There’s no picture so I’ll give my own answers.
The long side needs to be x radical 3, the short leg is just x, and the hypotenuse is 2x. So one example could be 5 radical 3, 5, and 5 times 2

lorasvet [3.4K]3 years ago

3 0

I think the answer is 90

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4x + y = 7 3x + 2y = 9

Diano4ka-milaya [45]

Answer:

x = 1

y = 3

Step-by-step explanation:

<h2>Substitution Method:</h2>

Step 1:

Name The Equation

4x + y = 7 ...(1)

3x + 2y = 9 ...(2)

Step 2:

From Equation (1) we get,

4x = 7 - y

i.e.,

x = 7 - y/4

Step 3:

Substitute the value of x = 7 - y/4 in equation (2)

i.e.,

3(7 - y/4) + 2y = 9

21 - 3y/4 + 2y = 9

21 - 3y + 8y/4 = 9

21 - 3y + 8y = 9 * 4

21 + 5y = 36

5y = 36 - 21

5y = 15

y = 15/5

y = 3

Step 4:

Substitute the value of y = 3 in equation (1)

4x + y = 7

i.e.,

4x + (3) = 7

4x + 3 = 7

4x = 7 - 4

4x = 4

x = 4/4

x = 1

<h2>Verification: </h2>

4x + y = 7 i.e., 4(1) + (3) = 7

3x + 2y = 9 i.e., 3(1) + 2(3) = 9

3 0

3 years ago

PLEASE HELP ME I NEED HELP

GarryVolchara [31]

Answer:

13 is c

Step-by-step explanation:

to find the length of a diagonal, pretend as if you are finding the hypotenuse of a triangle.

5^2 + 12^2 = c^2

25 + 144 = 169

the square root of 169 is 13

5 0

3 years ago

Select the counterexample to this conjecture:

vredina [299]

The answer is .90º + 90º = 180º, .90º is not an obtuse angle

4 0

3 years ago

I need an answer ASAP

Misha Larkins [42]

Answer:

200

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

In the figure, if the measure of 28 = 72°, what's the measure of 214?

goblinko [34]

Answer:

72°

Step-by-step explanation:

Angle 8 and angle 14 are corresponding angles.

∠8=∠14

72=∠14

4 0

3 years ago