7x - 72 = 3x + 40
4x = 112
x = 28
3(28) + 40
= 124
Answer:
A.) Yes
Step-by-step explanation:
Plug in (3,2) into both equations ....
2(3) - 3(2) = 0
2(3) + 2 = 8
Then solve ....
2(3) - 3(2) = 0
6 - 6 = 0
0 = 0
2(3) + 2 = 8
6 + 2 = 8
8 = 8
Since both equation are true the solution (3,2) is true
See the picture attached to better understand the problem
in the figure C is the <span>fire hydrant
</span>
we know that
in the right triangle ABC
AB=opposite side angle x
BC=adjacent side angle x
tan x°=AB/BC-----> 125/72
x=arc tan (125/72)-----> x=60.06°
the answer is
the angle of elevation from the fire hydrant to the top of the building is 60.06°
Answer:
It is D
Step-by-step explanation:
multiply 6 by 100 do it alone it should look like 6*100=600 then you look at your choices and pick whichever one has 6 in the hundreths place.
Glad I could help.....Please name me brainliest!!!!
Try this inequality with 0 as the right side.
-x > 0
According to John, we multiply both sides by -1, and the inequality sign does not change direction, so we get this
x > 0
Let's use a number for x that makes the original inequality true.
Let x = -2.
-x > 0
-(-2) > 0
2 > 0
As you can see, -2 does work on the original equation.
Now let's try -2 in John's solution.
x > 0
-2 > 0 which is a false statement.
Now let's solve it again, but we will reverse the inequality symbol when we multiply both sides by -1.
-x > 0
x < 0
Try x = -2.
-2 < 0 which is true
Now it works.
John is incorrect.
If you multiply or divide an equation by a negative number, even if one of its sides is 0, you still must change the direction of the inequality symbol.