Answer:
84
Step-by-step explanation:
Well lets begin by noting that 30% are Grade Eight. That means that 70% will be Grade Six and Seven, but thats not the question, the question is how many people are sixth and seventh grade. As I said before the answer is 84. To find 10% of 120, you shift the decimal point one place to the left and get 12. I earlier said 70% are grade six and seven meaning 70/10=7
All thats left is a simple multiplication problem, 12x7 which gives you 84. To ensure you are correct. 84/7=12 and that promises you a correct answer.
If you do not understand the math I did here reply and I will further explain. For now I hope this helps!
Brainly?
5 Trumpets
10 Trumpets
8 Trombones
6 Trombones for 15 Trumpets
Answer:
idk
Step-by-step explanation:
because i said so.
Answer:
plug the 5 into the function
f(5)=(5)^2-5
f(5)= 25-5
f(5)=20
Step-by-step explanation:
The number of hydrogen and oxygen atoms that should be in the products according to the law of conservation of matter, is given as follows:
4 hydrogen atoms and 2 oxygen atoms.
<h3>What is stated by the law of conservation of matter?</h3>
The law of conservation of matter states that the amount of matter in the solution remains constant, even when the substance has a change in the format.
The amounts on the equation are given as follows:
- 2 oxygen atoms in the reactants.
The law of conservation of matter states that the amounts remain constant, hence the amounts of the solution are given as follows:
- 2 oxygen atoms in the reactants.
More can be learned about the law of conservation of matter at brainly.com/question/18318085
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