B. √2/2
cos45=1/√2=1/√2*√2/√2= √2/2
Answer:
15 cups of orange juice
Step-by-step explanation:
Let u be 1 unit.
5u = 25 cups
u = 25÷5
= 5
3u = 5×3
= 15
Answer:
D) Survey 100 randomly selected students from the school
Step-by-step explanation:
This gives an equal chance to everybody, so it's not biased and it is of everybody that goes to his school. A is only the people on the football team so its not students in his school. Walking to school has nothing to do with the survey topic and so thats also definitely not it. C again doesn't give a fair chance to everybody, so it would be possible to get an accurate, unbiased answer. D is definitely your answer!
I hope that helps!!
Have an awesome day! :)
Well for this question you don't need to worry about PEMDAS to much since it's all multiplication. So first just do the subtraction in each parenthesis 5-(-14)(23. Now you may be wondering about the negative outside the parenthesis, all you need to remember is to multiply it by the -14 and remember that negative times negative is positive so the answer would be 14. Simplified version after all this would be 5(14)(23), so now just do the multiplication which would give you 1,610. Hope this helps!
Answer:
Step-by-step explanation:
<u>Given</u>
- 7.8x -3.4y + z subtract
- -9.2x + 4.8y - 2.1z
<u>Solution</u>
- 7.8x -3.4y + z - (-9.2x + 4.8y - 2.1z) =
- 7.8x -3.4y + z + 9.2x - 4.8y + 2.1z =
- x(7.8 + 9.2) -y(3.4 + 4.8) +z(1 + 2.1) =
- 17x - 8.2y + 3.1z
