Answer:
The number of nickel coins is 10 and the number of quarter coins is 5
Step-by-step explanation:
<u><em>The correct question is</em></u>
Mary has 15 coins with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there
Let
x ----> the number of nickel coins
y ----> the number of quarter coins
Remember that
we know that
Mary has 15 coins
so
-----> equation A
The total value of the coins is $1.75
so
----> equation B
Solve the system by graphing
Remember that the solution is the intersection point both graphs
using a graphing tool
The solution is the point (10,5)
therefore
The number of nickel coins is 10 and the number of quarter coins is 5
Answer:
eleven r plus seven s
Step-by-step explanation:
thats the written form
Answer:
Susanne is 16
Step-by-step explanation:
Let x be Dakota's age
x + 3 = Susanne's age
4(x+3) = Bob's age
Sum of their age is:
x + x + 3 + 4(x + 3) =
Simplify:
x + x + 3 + 4x + 12
6x + 15 = 93
6x = 78
x = 13
Susanne is 3 more than x (13 +3) which is 16
8x - 3 = 15x + 18
First, subtract 8x from both sides. / Your problem should look like:
Second, simplify 15x + 18 - 8x to 7x + 18. / Your problem should look like:
Third, subtract 18 from both sides. / Your problem should look like:
Fourth, subtract -3 - 18 to get -21. / Your problem should look like:
Fifth, divide both sides by 7. / Your problem should look like:
= x
Sixth, simplify
to 3. / Your problem should look like:
Seventh, switch sides. / Your problem should look like:
Answer:
x = -3
Answer: The coordinates of point B are (19 , 20).
Step-by-step explanation:
The mid point (x,y) of line joining (a,b) and (c,d) is given by :-
(1)
Given : Point A is located at (3,6). The midpoint of line segment AB is point C(11,13).
Let the coordinates of point B are (a,b) m, the according to (1) , we have
Hence, the coordinates of point B are (19 , 20).
