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uysha [10]
3 years ago
9

If x=6 and y=−4, evaluate the following expression:10+5xy​

Mathematics
2 answers:
gulaghasi [49]3 years ago
7 0

Answer:

-110

Step-by-step explanation:

10+5xy

10+5(6)(-4)

10+30(-4)

10+(-120)

10-120

-110

Rzqust [24]3 years ago
3 0

Answer and Step-by-step explanation:

<u>Plug in the values 6 and -4 for x and y respectively.</u>

10 + 5(6)(-4)

<u>Multiply 5 and 6 to get 30.</u>

10 + 30(-4)

<u>Multiply 30 and -4 to get -120</u>

10 - 120

<u>Subtract 120 from 10 to get -110.</u>

-110

<u>The value of the expression is -110.</u>

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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For each system of equations, drag the true statement about its solution set to the box under the system?
natta225 [31]

Answer:

y = 4x + 2

y = 2(2x - 1)

Zero solutions.

4x + 2 can never be equal to 4x - 2

y = 3x - 4

y = 2x + 2

One solution

3x - 4 = 2x + 2 has one solution

Step-by-step explanation:

* Lets explain how to solve the problem

- The system of equation has zero number of solution if the coefficients

 of x and y are the same and the numerical terms are different

- The system of equation has infinity many solutions if the

   coefficients of x and y are the same and the numerical terms

   are the same

- The system of equation has one solution if at least one of the

  coefficient of x and y are different

* Lets solve the problem

∵ y = 4x + 2 ⇒ (1)

∵ y = 2(2x - 1) ⇒ (2)

- Lets simplify equation (2) by multiplying the bracket by 2

∴ y = 4x - 2

- The two equations have same coefficient of y and x and different

  numerical terms

∴ They have zero equation

y = 4x + 2

y = 2(2x - 1)

Zero solutions.

4x + 2 can never be equal to 4x - 2

∵ y = 3x - 4 ⇒ (1)

∵ y = 2x + 2 ⇒ (2)

- The coefficients of x and y are different, then there is one solution

- Equate equations (1) and (2)

∴ 3x - 4 = 2x + 2

- Subtract 2x from both sides

∴ x - 4 = 2

- Add 4 to both sides

∴ x = 6

- Substitute the value of x in equation (1) or (2) to find y

∴ y = 2(6) + 2

∴ y = 12 + 2 = 14

∴ y = 14

∴ The solution is (6 , 14)

y = 3x - 4

y = 2x + 2

One solution

3x - 4 = 2x + 2 has one solution

3 0
3 years ago
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