Answer:
cost of knife = £5.52
Step-by-step explanation:
Assume:
Cost of Knife = a
Cost of Spoon = b
a = 3b ----------------------(1)
12a + 9b = £82.80 -------(2)
Substitute equation (1) in equation (2)
12 * (3b) + 9b = £82.80
36b + 9b = £82.80
45b = £82.80
b = £1.84
Therefore, cost of knife = a = 3 * £1.84 = £5.52
Answer:91.1
Step-by-step explanation:
Circumference=17.6
2xπxr=17.6
2x3.14xr=17.6
6.28r=17.6
r=17.6 ➗ 6.28
r=2.8
volume of cone=(πxr^2xh) ➗ 3
Volume=(3.14x(2.8)^2x11.1) ➗ 3
Volume=(3.14x2.8x2.8x11.1) ➗ 3
Volume=273.3 ➗ 3
Volume=91.1
Step-by-step explanation:
- 2x-2y=-6
3x+4y=8
multiply equation (1) by 3 and equation (2) by 2
- 6x-6y=18
6x+8y=16
Add
2y=34
y= 34÷2
y=17
substitute 17 for y in equation (2)
3x+4y=8
3x+4(17)=8
3x+68=8
3x=8-68
3x=-60
x=-60÷3
x=-20
x=-20,y=17
the picture in the attached figure
we know that
m∠1+m∠2+m∠3+m∠4=180°
m∠jkm=m∠1+m∠2+m∠3
so
m∠jkm+∠4=180°
m∠jkm=5x+18
∠4=x
substitute
(5x+18)+x=180°------> 6x=180-18------> x=162/6--------> x=27°
therefore
the answer is
the measure of angle 4 is equal to 27 degrees
None of these really fit….. it would be
45/(6+3)
But none of your answers match so I’m not sure,,,,, sorry
