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2 years ago

What property is shown in the example below?

Mathematics

2 answers:

Pavlova-9 [17]2 years ago

7 0

Answer:

Associative

Step-by-step explanation:

noname [10]2 years ago

5 0

D is the correct answer.

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Use the reference angles to find the exact value of the expression cot -11 pi/6. Do not use a calculator

laiz [17]

Answer:

$\sqrt{3}$

Step-by-step explanation:

cot(-11pi/6)=cot(-pi-5pi/6)= -cot(5pi/6)=cot(pi/6)= $\sqrt{3}$ ≈1.73

7 0

2 years ago

X^2+43xy+590y^2 resolve into factors

Natalija [7]

Step-by-step explanation:

We have:

x - y = 43 , xy = 15

To find, the value of x^2+y^2x

= ?

∴ x - y = 43

Squaring both sides, we get

(x - y)^2(x−y)

= 43^243

⇒ x^2+y^2x

- 2xy = 1849

Using the algebraic identity,

(a - b)^2(a−b)

= a^2+b^2a

- 2ab

⇒ x^2+y^2x

= 1849 + 2xy

Put xy = 15, we get

x^2+y^2x

= 1849 + 2(15)

⇒ x^2+y^2x

= 1849 + 30

⇒ x^2+y^2x

= 1879

∴ x^2+y^2x

= 1879

I will send hint follow this hint then slove it .

thankyou

7 0

3 years ago

For questions 13 – 15, find x so that q || r. State the converse used.

Grace [21]

Answer:

13. x = 7 ; Converse : Alternate interior angles are equal .

14. x=12; Converse used : Linear pair

15. x = 23; Converse: Corresponding angles are equal

Step-by-step explanation:

13.

Refer the attached figure

Given: q || r

$\angle CBE =\angle DEB$ (Alternate interior angles )

So, 15x+3=108

15x=108-3

15x=105

$x=\frac{105}{15}$

x=7

So, x = 7 ; Converse : Alternate interior angles are equal .

14.

Refer the attached figure

Given q||r

$\angle PQT = \angle STQ$ (Alternate interior angles

So, $\angle PQT = \angle STQ=11x-28$

Now $\angle UTQ + \angle STQ = 180^{\circ}$ (Linear pair)

So,7x-8+11x-28=180

18x-36= 180

18x=216

$x=\frac{216}{18}$

x=12

So, x=12; Converse used : Linear pair

15.

Refer the attached figure

Given q||r

$\angle BDC+\angle CDE = 90+2x$

$\angle BDE=\angle PBC$ (corresponding angles)

90+2x=5x+21

90-21=5x-2x

69=3x

23=x

So, x = 23; Converse: Corresponding angles are equal

5 0

2 years ago

PLEASE HELP MEEEE

kow [346]

Answer:

23,500

Step-by-step explanation:

6 0

2 years ago

WILL GIVE BRAINLIEST! In any boxplot, what percent of the data is above the 3rd quartile?

Margarita [4]

75% because a third quartile is 3/4 which is 75% which if you break each fourth down it would be 25% so then you multiply 25%x3 to get 75%

5 0

2 years ago