Answer:
answer is x=3 and y=5.... so it is (3,5)
Step-by-step explanation:
you want to combine them so y=3x-4 so subsitute y
-2x+5(3x-4)=19
-2x+15x-20=19
+20 +20
13x=39
--- ---
13 13
x=3
now subsitute 3 into x into any problem...
3(3)-4=y
9-4=y
and 9-4 is 5 so it is...
(3,5)
pls give me brainliest
we know that
if angle B is equal to 90 degrees
so
we have a right triangle
but
the opposite side to the right angle is the hypotenuse
and
the hypotenuse
is the long side of the triangle
in this problem, the hypotenuse is b=12
and
12 is not greater than 14
therefore
with these dimensions you can not form a triangle
there is no solution
The value of n is 4 and yz is 1 if y is between x and z i.e. if y, x and z are collinear points.
According to the given question.
We have some linear equations.
xy = 4n + 3
yz = 2n - 7
and
xz = 20
Since, y is between x and z. Which means y, x and z are collinear points.
Therefore,
xy + yz = xz
⇒ 4n + 3 + 2n - 7 = 20
⇒ 6n -4 = 20
⇒ 6n = 20 + 4
⇒ 6n = 24
⇒ n = 24/6
⇒ n = 4
Therefore,
yz = 2n - 7 = 2(4) - 7 = 8- 7 = 1
Hence, the value of n is 4 and yz is 1 if y is between x and z i.e. if y, x and z are collinear points.
Find out more information about collinear points here:
brainly.com/question/1593959
#SPJ4
Answer:
area is 1/2bh
in an euqilateral triangle, all sides are equal so base and height are 12
1/2 x 12 x 12
1/2 x 144= 72 (B)
Answer:
A. P = 18, A = 10
Step-by-step explanation:
Perimeter = 1 + 2 + (1 + 2) + 1 + 2 + (5-2-1) + 2 + 5
= 1 + 2 + 3 + 1 + 2 + 2 + 2 + 5 = 18
This eliminates everything but choice A and D.
Area = (1 * 5) + (1 * 3) + (1 * 2) = 5 + 3 + 2 =10
