Pls!
1) place a second set of parenthesis in the expression below so that the value of the expression is -15
5-20 \div (-5) times 2-7
2) jon makes pillow covers. each pillow cover uses 3/4 yard of fabric. how many complete pillow covers can he make from 7 1/8 yards of fabric?
3) carmella has a length of 24 feet of wallpaper border. she wants to put the border around the walls of a room with dimensions of 61 3/4 inches and 74 1/8 inches. estimate how much of the border she needs. does she have enough of the border?
pls explain! you very much : )

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!

inverse operation of addition

its a, i had the same answer, its from study island right

step-by-step explanation: