Write out the algebraic expression given in each written expression. 7 plus the product of 9 and a is 7
A a(7+9)=7
B 7(9+a)=7
C (7+a) 9 = 7
D 7 + 9a = 7

D

Step-by-step explanation:

1) rewrite 7 plus as

7 +

2) rewrite “the product of 9 and a“ as

9a remembering that a product can be written without a sign that indicates the operation

3) match the two informations

7 + 9a

4) rewrite “is 7” as:

= 7

5) write the final expression

7 + 9a = 7

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

its an acute right triangle

step-by-step explanation: