Mathematics
Grade-7
Easy

Question

8y + 12 - 2z
for y = 4 and z = 2

  1. 40
  2. 20
  3. 84
  4. 34

hintHint:

Substitute value of 4 for y and value of 2 for z

The correct answer is: 40


    8y + 12 - 2z
    for y = 4 and z = 2
    =8(4) +12-2(2)
    =32+12-4
    =44 -4
    =40

    Related Questions to study

    Grade-7
    Mathematics

    Identify the following is equivalent to 5(2x+6)

    Given Expression:
    5(2x+6)
    Since, it is in the form a(b+ c) we can apply distributive law which produces ab+ ac as a result.
    Similarly, By applying the Distributive law to 5(2x+6) :
    5(2x+6)
    left parenthesis space 5 cross times 2 x right parenthesis space plus space left parenthesis 5 cross times 6 space right parenthesis
    = 10x + 30.
    Hence, The expression 5(2x+6) yields 10x +30 after it's expansion.

    Identify the following is equivalent to 5(2x+6)

    MathematicsGrade-7

    Given Expression:
    5(2x+6)
    Since, it is in the form a(b+ c) we can apply distributive law which produces ab+ ac as a result.
    Similarly, By applying the Distributive law to 5(2x+6) :
    5(2x+6)
    left parenthesis space 5 cross times 2 x right parenthesis space plus space left parenthesis 5 cross times 6 space right parenthesis
    = 10x + 30.
    Hence, The expression 5(2x+6) yields 10x +30 after it's expansion.

    Grade-7
    Mathematics

    There were 47 frogs in a pond. f of the frogs hopped away. Choose the expression that represents this.

    There were 47 frogs in a pond. f of the frogs hopped away. Choose the expression that represents this.

    MathematicsGrade-7
    Grade-7
    Mathematics

    Evaluate the expression.   Let g = 3    h = 9
    4h + 2g + 4

    Evaluate the expression.   Let g = 3    h = 9
    4h + 2g + 4

    MathematicsGrade-7
    parallel
    Grade-7
    Mathematics

    Simplify the expression 11(9+d)

    Given Expression:
    11(9+d)
    Since, it is in  the form a(b +c) we can apply Distributive Law which produces ab+ ac as a result.
    Similarly, by applying the distributive law to 11(9+d) :
    11(9+d)
    left parenthesis 11 cross times 9 space right parenthesis space plus space left parenthesis 11 cross times d space right parenthesis
    = 99 + 11d.
    Hence, the expression 11(9+d) yields 99 + 11d after it's expansion.

    Simplify the expression 11(9+d)

    MathematicsGrade-7

    Given Expression:
    11(9+d)
    Since, it is in  the form a(b +c) we can apply Distributive Law which produces ab+ ac as a result.
    Similarly, by applying the distributive law to 11(9+d) :
    11(9+d)
    left parenthesis 11 cross times 9 space right parenthesis space plus space left parenthesis 11 cross times d space right parenthesis
    = 99 + 11d.
    Hence, the expression 11(9+d) yields 99 + 11d after it's expansion.

    Grade-7
    Mathematics

    The expression 7h + 1.50d can be used to find the total earnings after h hours and d deliveries have been made.  Sally make after working 10 hours and making 3 deliveries total is ?

    The expression 7h + 1.50d can be used to find the total earnings after h hours and d deliveries have been made.  Sally make after working 10 hours and making 3 deliveries total is ?

    MathematicsGrade-7
    Grade-7
    Mathematics

    Use the distributive property to simplify the expression below:
    −2(6n+3)

    Given Expression:
    −2(6n+3)
    Distributive law states that every attribute inside the parenthesis can have same access of the attributes present outside the parenthesis.
    Example: a(b+ c) yields ab + ac.
    Hence, By applying Distributive Law to −2(6n+3) :
    −2(6n+3)
    =left parenthesis negative 2 cross times 6 n right parenthesis space plus space left parenthesis negative 2 cross times 3 right parenthesis
    =(-12n) + (-6)
    = -12n - 6.
    Hence, from distributive law −2(6n+3) yields -12n - 6.

    Use the distributive property to simplify the expression below:
    −2(6n+3)

    MathematicsGrade-7

    Given Expression:
    −2(6n+3)
    Distributive law states that every attribute inside the parenthesis can have same access of the attributes present outside the parenthesis.
    Example: a(b+ c) yields ab + ac.
    Hence, By applying Distributive Law to −2(6n+3) :
    −2(6n+3)
    =left parenthesis negative 2 cross times 6 n right parenthesis space plus space left parenthesis negative 2 cross times 3 right parenthesis
    =(-12n) + (-6)
    = -12n - 6.
    Hence, from distributive law −2(6n+3) yields -12n - 6.

    parallel
    Grade-7
    Mathematics

    Evaluate 8a - b     if a = 10   and   b = 6.

    Evaluate 8a - b     if a = 10   and   b = 6.

    MathematicsGrade-7
    Grade-7
    Mathematics

    6a - 3d
    when a = 1, d = 2

    6a - 3d
    when a = 1, d = 2

    MathematicsGrade-7
    Grade-7
    Mathematics

    In the expression below  the "d" labeled as?
    4d-9

    In the expression below  the "d" labeled as?
    4d-9

    MathematicsGrade-7
    parallel
    Grade-7
    Mathematics

    Let "p" represent the number of paper clips in a box.  If there are 76 boxes in a case, write an algebraic expression to show the total number of paper clips.

    Let "p" represent the number of paper clips in a box.  If there are 76 boxes in a case, write an algebraic expression to show the total number of paper clips.

    MathematicsGrade-7
    Grade-7
    Mathematics

    Write an expression for the product of 12 and a number.

    Write an expression for the product of 12 and a number.

    MathematicsGrade-7
    Grade-7
    Mathematics

    Expand the expression using the distributive property. −4(2h+3)

    Given Expression:
    −4(2h+3)
    Distributive law states that the each attribute inside a parenthesis have same right to access the attributes present outside the parenthesis.
    Example : a(b + c) Yields ab + ac after distribution.
    Hence, By applying the distribution law to −4(2h+3)  becomes:
    −4(2h+3)
    =left parenthesis negative 4 cross times 2 h right parenthesis space plus space left parenthesis negative 4 cross times 3 right parenthesis
    = (-8h) +(-12)
    = -8h - 12.
    Hence, From Distributive Law the expression −4(2h+3)  becomes -8h -12.

    Expand the expression using the distributive property. −4(2h+3)

    MathematicsGrade-7

    Given Expression:
    −4(2h+3)
    Distributive law states that the each attribute inside a parenthesis have same right to access the attributes present outside the parenthesis.
    Example : a(b + c) Yields ab + ac after distribution.
    Hence, By applying the distribution law to −4(2h+3)  becomes:
    −4(2h+3)
    =left parenthesis negative 4 cross times 2 h right parenthesis space plus space left parenthesis negative 4 cross times 3 right parenthesis
    = (-8h) +(-12)
    = -8h - 12.
    Hence, From Distributive Law the expression −4(2h+3)  becomes -8h -12.

    parallel
    Grade-7
    Mathematics

    Use the distributive property to expand the expression: 3(t - 2)

    Given Expression:
    3(t - 2)
    Since, it is in the form a(b+ c) we can apply Distributive Law which produces ab+ ac as a result.
    *Similarly, by applying the Distributive Law to 3(t - 2) we get:
    3(t - 2)
    = (3 cross times t) - (3 cross times 2)
    = 3t - 6.
    Hence, the expression 3(t - 2) becomes 3t-6 after it's expansion.

    Use the distributive property to expand the expression: 3(t - 2)

    MathematicsGrade-7

    Given Expression:
    3(t - 2)
    Since, it is in the form a(b+ c) we can apply Distributive Law which produces ab+ ac as a result.
    *Similarly, by applying the Distributive Law to 3(t - 2) we get:
    3(t - 2)
    = (3 cross times t) - (3 cross times 2)
    = 3t - 6.
    Hence, the expression 3(t - 2) becomes 3t-6 after it's expansion.

    Grade-7
    Mathematics

    Use the distributive property to expand the expression: 2(y + 5x)

    Given Expression:
    2(y + 5x)
    Since, it is in the form of a(b+ c) we can apply distributive law which produces ab+ ac as  a result.
    Then, By applying the Distributive Law to 2(y + 5x) we get:
    2(y + 5x)
    = (2 cross times y) + (2 cross times 5 x)
    = 2y + 10x.
    Hence, the expression 2(y + 5x) becomes 2y + 10x after it's expansion.

    Use the distributive property to expand the expression: 2(y + 5x)

    MathematicsGrade-7

    Given Expression:
    2(y + 5x)
    Since, it is in the form of a(b+ c) we can apply distributive law which produces ab+ ac as  a result.
    Then, By applying the Distributive Law to 2(y + 5x) we get:
    2(y + 5x)
    = (2 cross times y) + (2 cross times 5 x)
    = 2y + 10x.
    Hence, the expression 2(y + 5x) becomes 2y + 10x after it's expansion.

    Grade-7
    Mathematics

    Expand the expression. 5(2 - 3y).

    Given Expression:
    5(2 - 3y).
    Since, it is in the form a(b+ c) we can apply Distributive Law which produces ab + ac as a result.
    Hence, By applying the Distributive Law  to 5(2 - 3y) we get:
    5(2 - 3y)
    = (5 cross times 2) - (5 cross times 3 y)
    = 10 - 15y.
    Hence, the expression 5(2 - 3y) becomes 10 - 15y after it's expansion.

    Expand the expression. 5(2 - 3y).

    MathematicsGrade-7

    Given Expression:
    5(2 - 3y).
    Since, it is in the form a(b+ c) we can apply Distributive Law which produces ab + ac as a result.
    Hence, By applying the Distributive Law  to 5(2 - 3y) we get:
    5(2 - 3y)
    = (5 cross times 2) - (5 cross times 3 y)
    = 10 - 15y.
    Hence, the expression 5(2 - 3y) becomes 10 - 15y after it's expansion.

    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.