The length of the base and the height of a triangle are numerically equal. their sum is 30 less than the number of units in the area of the triangle. find the area of the triangle.

50 sq. units

Step-by-step explanation:

The length of the base and the height of a triangle are numerically equal.

Let us assume that, the length and height as x.

So the area of the triangle will be,

As their sum is 30 less than the number of units in the area of the triangle, so

Neglecting negative roots,

Hence, the base and height of the triangle is 10 units, so the area will be,

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.