100-2(12+13) solve the equation

100−2(12+13)

12+13=25

100−2×25

2×25=50

100-50=50

the answer is 50 :)

50

Step-by-step explanation:

To solve this equation, use PEMDAS:

P - Parentheses

E - Exponents

M/D - Multiplication/Division

A/S - Addition/Subtraction

PEMDAS is the method that is used for the order of operations. Multiplication and division are interchangeable, so when there are only those signs left, you solve from left to right. This also applies to addition and subtraction.

Equations must always be solved in the order of PEMDAS -- P, then E, then M/D, then A/S.

Now, to solve the equation:

100 - 2(12 + 13)    First, solve what is in the parentheses (P).

100 - 2(25)           Next, multiply 2 × 25 (M).

100 - 50               Finally, subtract 50 from 100 (S)

50

100 - 2(12 + 13) = 50

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.