Just use pemdas : parenthisis, exponents, multiplication, division, addition, and subtraction. Do the exponents first before you multiply.
Answer:
Step-by-step explanation:
Square root can be written as a power.
Multiply the exponents.
Answer:
x = ± 10
Step-by-step explanation:
8x² - 7 = 793 ( add 7 to both sides )
8x² = 800 ( divide both sides by 8 )
x² = 100 ( take square root of both sides )
x = ± = ± 10
Answer:
a
Step-by-step explanation:
We first require the fraction of English to Total
Total = 84 + 38 + 18 + 47 + 69 = 256 , then
× 100% ≈ 27% ( nearest whole number )
We presume you want to find values of x that make this true.
Subtract the right side and factor:
Once you have factors whose product is zero, you can find the values of x that make those factors zero. A product can only be zero if one or more contributing factors is zero.
To solve 2x-5=0, you can add 5 then divide by 2:
... 2x -5 = 0
... 2x = 5
... x = 5/2