Answer:
x=21
Step-by-step explanation:
since the triangle is isosceles, the two lower angles are equal.
2(2x+3)=90
4x+6=90
4x=84
x=21
Answer:
The temperature in the next morning is -4°C
Step-by-step explanation:
-11 °C + 7 °C = -4 °C
Since rises means increase or add
B. multiply 1st equation by -2, solution (2,9).<span />
Answer:
= (X-1) (-2X- 6)
Step-by-step explanation:
