mchillery1028
20.04.2021 •
Mathematics
16. A community group is planning the expansion of a square flower garden in a city park. If each side of the original garden is increased by 3 meters, the new total area of the garden will be 225 square meters. Find the length of each side of the original garden. A. 15m B. 3m C. 12m D. Square root of 12m
17. What is the value of c so that x^2-11x+c is a perfect-square trinomial? A. 121, B. 121/4, C. -11/2, D. 121/2
18. PLEASE HELP ASAP! Solve the equation by completing the square. Round to the nearest tenth. x^2+8x=10 A. 1.1, 9.1 B. 1.1,-9.1 C. -1.1,9.1 D. -1.1, -9.1
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Ответ:
4.) 6
5.)
Step-by-step explanation:
4.
PEMDAS
Parenthesis, Exponents, Multiplication, Division, Adition, Subtraction.
3 + 27 ÷ ( 4 + 5 )
Do the parenthesis first ( 4 + 5 )
3 + 27 ÷ 9
Do the division next ( 27 ÷ 9)
3 + 3
Now addition.....( 3 + 3)
6
__________________________________________________________
5.
In order to find the sum between these 2 fractions, we need to find a common denominator, and in this case, it can be 15...
Now that we have a common denominator, we can add them up...
Hope this helped!
Have a supercalifragilisticexpialidocious day!