X = 4y
3x - y = 70

substitute the x in the second equation with the other half of the first equation.

3(4y) - y = 70
12y - y = 70
11y = 70
y = 6.36 repeating, or 6 4/11

now use this to solve first equation
x = 4 (6 4/11)
x = 25.45 repeating

done

7 0

3 years ago

Can someone please help me

Elan Coil [88]

a triangle adds to 180 degrees

we have 90 and 40 so the hypotenuse is 50 degrees

7 0

4 years ago

Read 2 more answers

Find the greatest common factor of 8 a3b2 and 12 ab4 .

Kruka [31]

4ab^2
Hoped this helps! Just had it on a quiz and got it right. If you have boxex by 4 a^1 b^2

8 0

3 years ago

Read 2 more answers

If the sum of the measures of the interior angles of a polygon is 1920°, how many sides does it have? math

Inessa05 [86]

Answer: There is no polygon with the sum of the measures of the interior angles of a polygon is 1920°.

Step-by-step explanation:

The sum of the measures of interior angles of a polygon with $n$ sides is given by:-

$(n-2)\times180^{\circ}$

Given: The sum of the measures of the interior angles of a polygon is 1920°.

i.e. $(n-2)\times180^{\circ}=1920^{\circ}$

$n-2=\dfrac{1920}{180}\\\\ n= \dfrac{1920}{180}+2\\\\ n=\dfrac{2280}{180}=12.67$

But number of sides cannot be in decimal.

Hence, there is no polygon with the sum of the measures of the interior angles of a polygon is 1920°.

7 0

3 years ago