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True [87]
3 years ago
9

Please help me with this math problem.Evalaute 7r - 5/s when r= 3 and s= 5.

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
7 0

20 is the answer 7(3)-5/(5)=20

JulijaS [17]3 years ago
5 0

Rewrite the equation: 7(3)-5/5

Evaluate.

21-1=20

20 is your answer.

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Question 5
agasfer [191]

Step-by-step explanation:

Given

g(x) = - 2x² + 3x

g(3) = - 2 * 3² + 3 *3

= -2 * 9 + 9

= -18 + 9

= -9

5 0
3 years ago
Read 2 more answers
In triangle JKL, m of angle J = 90, m of angle K = 30, and m of angle L = 60. Which of the following statements about triangle J
Jobisdone [24]

Answer:

# Answer B is true ⇒ KL = 2(JL)

# Answer C is true ⇒ JK = √3(JL)

# Answer F is true ⇒ JK = √3/2(KL)

Step-by-step explanation:

* Lets explain the ratio between the sides of the triangle

- In Δ JKL

∵ The measure of angle J is 90°

∴ KL is the hypotenuse

∵ The measure of angle K is 30°

∴ JL is the opposite side to angle 30°

∵ The measure of angle L is 60°

∴ JK is the opposite side to the angle 60°

- There is a fact in the triangle which has angles 30° , 60° , 90°

# The length of the side opposite to the angle of measure 30° is

  half the length of the hypotenuse

∵ KL is the hypotenuse

∵ JL is the opposite side to the angle of measure 30°

∴ JL = 1/2 KL  OR KL = 2 JL

# The length of the side opposite to the angle of measure 60° is

  √3 the length of the opposite side to the angle 30°

∵ JK is the opposite side to the angle of measure 60°

∵ JL is the opposite side to the angle of measure 30°

∴ JK = √3 JL

# The length of the side opposite to the angle of measure 60° is also

  half √3 the length of the hypotenuse

∵ JK is the opposite side to the angle of measure 60°

∵ KL is the hypotenuse

∴ JK = √3/2 KL

- From the relation above

# Answer B is true ⇒ KL = 2(JL)

# Answer C is true ⇒ JK = √3(JL)

# Answer F is true ⇒ JK = √3/2(KL)

6 0
4 years ago
9 - 3/5 as a improper fraction
saveliy_v [14]

Answer:

42/5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The function g(n) = n2 - 6n + 16 represents a parabola.
stich3 [128]

Hi,

Part A:

g(n) = n^2 - 6n + 16 \\=(n^2-2*3*n+3^2+7)\\=(n-3)^2+7\\

Part B;

Vertex is (3,7)

As the coefficient of n² is positive , the vertex is a minimum.

Part C:

Axis of symmetry is n=3

5 0
3 years ago
Select the correct answer.
pogonyaev

Answer:

Step-by-step explanation:

D = {x | x is a whole number}

D = {0, 1, 2, 3, 4,......}

E = {x | x is a perfect square between 49 and 100}

E = {64, 81}

F = {x | x is an even number between 10 and 20}

F = {12, 14, 16, 18}

D∪F = {x | x is whole number}

D∩F = {x | x is an even number between 10 and 20}

D∩E = {x | x is a perfect square between 49 and 100}

E∩F = {null set}

D∩(E∪F) = {12, 14, 16, 18, 64, 81}

8 0
3 years ago
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