1. 13/4
2. 35/4
3. 11/2
4. 52/77
5. 32/3
6. 232/35
7. 32
8. 5/2
9.217/48
7 because 3 times 7 is equals 21
1. The correct statement is the first one, which is: <span>Add the two equations, solve for y, and then substitute –1 for y to find x.
</span>
2. Therefore, you have the following system of equations:
<span>
4x+8y=20
-4x+2y= -30
3. When you a</span>dd the two equations, and clear the variable "y", you obtain:
10y=-10
y=-1
4. Now, you must substitute -1 for y (y=-1) to find x, as below:
4x+8y=20
4x+8(-1)=20
4x-8=20
4x=20+8
4x=28
x=28/4
x=7
Answer:
1) 114
2) 159
Step-by-step explanation:
2+8+5+9+90 = 114
3+45+111 = 159
Hope this helps.
Das is a special right triangle
for a right triangle ABC with a 60 degree and 30 degree angle
where A is the 60 degree and C is the 30 degree and B is the 90 degree angle
if AC is x, then AB=x/2 and BC=(x√3)/2
AC=14
BC=(14√3)/2=7√3
