Her brother sent C. 490 messages.
In order to find this, we need to set it up as a proportion. Once we have done that, we can cross multiply and solve for the unknown variable.
(4/7) = (280/x) -----> Cross multiply.
4 * x = 7 * 280
4x = 1960
x = 490
Answer:
5x+9y≤32
Step-by-step explanation:
Let x be the number of cassette tapes you purchase.
Let y be the number of CDs you purchase.
The problem is you only have $32 to spend.
Different combinations of tapes and CDs are possible. We want an equation showing this relationship.
One cassette tape costs $5. The cost for any number of cassette tapes is $5 times the number
purchased; that's 5 times x, or 5x.
To find the cost of CDs purchased, we multiply $9 times the number of CDs, $9 times y or 9y.
The cost of the total purchase is
[the cost of the cassettes] + [the cost of the CDs] or
5x + 9y
Hope this helps!!
Answer:
3
Step-by-step explanation:
(5÷5)+1+(6÷6)
1+1+(6÷6)
1+1+1
3
Answer: The dependent variable is the Y axis of a graph, or the side of the graph that is vertical. The independent variable is the X axis of a graph, or the side of the graph that is horizontal. Domain is the input of a mathematical function, and the range is the output!
Hope this helps :)
<u><em>Answer:</em></u>
<u><em>Step-by-step explanation:</em></u>
<u><em>Please give me brainliest.</em></u>
