Answer:
FHG=CDE
Step-by-step explanation:
ASA
The other triangle has 2 dashes for the side. THe other two have the same markings.
Answer:
r = Q/(8s^2)
Step-by-step explanation:
Divide by the coefficient of r.
Q/(8s^2) = 8rs^2/(8s^2) = r
Answer:
The mystery number is 7
Step-by-step explanation:
This is a very easy problem.
let the mystery number=x
2(x+5)=24
2x+10=24
2x=24-10
2x=14
x=7
To check the answer,
Add 5 to 7=12, multiply by 2=24
The order from the least to the greatest is 
, 
, 
, and 
.
Step-by-step explanation:
Step 1:
We must determine each of the individual values to be able to arrange the given numbers.
means that so 1 and 7 in the decimal keep repeating so,
and
Now that we have all the four values, we can arrange them in ascending order.
Step 2:
There are two negative numbers, the greater a negative number the lesser it is i.e. 
So the least value is which is followed by .
The other two are positive numbers. As 
so the highest number is .
So the order from the least to the greatest is , , , and .
Solve the first for y
y=13x-90 and the second is y=x^2-x-42
When there is/are solutions y=y so we can say:
x^2-x-42=13x-90 subtract 13x from both sides
x^2-14x-42=-90 add 90 to both sides
x^2-14x+48=0 expand so that it is easy to factor...
x^2-6x-8x+48=0 now factor 1st and 2nd pair of terms
x(x-6)-8(x-6)=0
(x-8)(x-6)=0
So there are two solutions, when x=6 and 8.
Using either original equation we can find the corresponding values for y. I'll use y=13x-90 because it is easier...
y(6)=-12, y(8)=14 so the two solutions are the points:
(6,-12) and (8,14)
