Answer:
4°
Step-by-step explanation:
All the angles in a triangle add together to equal 180°. We know there are three angles of 20° so let's subtract this.
20° × 3 = 60°
180° - 60° = 120°
Now well divide 120° up among the three angles.
120° ÷ 3 = 40°
Now we know the angles are 40° + 20°, but we need to find the value of x, so divide 40° by 10
40° ÷ 10 = 4°
x = 4°
18 less than 7 times a number is 80
Answer:
-149
Step-by-step explanation:
To solve, we must first plug our known values for a and b into the equation and then follow the order of operations.
1. ![-(4)^{2} -(-7)+5(4)(-7)](https://tex.z-dn.net/?f=-%284%29%5E%7B2%7D%20-%28-7%29%2B5%284%29%28-7%29)
2. ![-16-(-7)+5(4)(-7)](https://tex.z-dn.net/?f=-16-%28-7%29%2B5%284%29%28-7%29)
3. ![-9+5(4)(-7)](https://tex.z-dn.net/?f=-9%2B5%284%29%28-7%29)
4. ![-9+20(-7)](https://tex.z-dn.net/?f=-9%2B20%28-7%29)
5. ![-9-140=-149](https://tex.z-dn.net/?f=-9-140%3D-149)
Answer:
11
expression: 6(2)-1
Step-by-step explanation:
6*2=12
12-1=11
Answer:
3/2 x 7/8 = (3×7)/(2×8)=21/16