**Answer:**

x=22/7 y=4/7 z=-3/7

**Step-by-step explanation:**

Cos (B) = (a^2 + c^2 -b^2) / (2 * a * c)

cos (B) = (11^2 +17^2 -12^2) / (2 * 11 * 17)

cos (B) = (121 + 289 -144) / (374)

cos (B) = 266 / 374

cos (B) =
<span>
<span>
<span>
0.7112299465

Angle B = </span></span></span>44.665 degrees

**Answer:**

5 but if it's supposed to be squared it's 6.25

**Step-by-step explanation:**

2.5*2=5

if supposed to be squared then

2.5*2.5=

6.25

**Answer:**

**Step-by-step explanation:**

add all qestions together 10+3+9=22

and put the number of free responces on top of the total number of qestions

and you cant simplify it so its in its simplist form

**Answer:tha ansa is b mate**

**Step-by-step explanation:**