Answer:
<u>y = x ( - 3 ) + 1</u>
Step-by-step explanation:
Find what relationship x and y have. In this case, y is x multiplied by -3, plus 1.
(3,-8) The number 3 is x and -8 is y. Use the rule above to see if it's correct. Like so: -8 = 3 ( - 3) + 1
-8 = -9 + 1
-8 = -8
The rule/equation is correct.
:))
<span>Standard deviation for mean of n objects = (square root n) x s.d. for one
object.
So you need (2.8/0.5)^2 or around 32.</span>
Answer:
r = 21 cm
Step-by-step explanation:
The radius of a circle is 1/2 of the diameter
r = 1/2d
r = 1/2(42)
r = 21 cm
Step-by-step explanation:
1)
SA= 2 (Length x Breadth + breadth x height + Length x height)
SA= 2(2*5+5*6+6*2)=2(10+30+12)=104cm^2
2)
2(3*4+4*5+5*3)= 2(12+20+15)=94cm^2
3)
2(7*9+9*12+12*7)=2(63+108+84)= 510cm^2
4)
SA=
![A=2πrh+2π {r}^{2} [tex]A=2πrh+2π {r}^{2}](https://tex.z-dn.net/?f=A%3D2%CF%80rh%2B2%CF%80%20%7Br%7D%5E%7B2%7D%20%3C%2Fstrong%3E%3C%2Fp%3E%3Cp%3E%3C%2Fp%3E%3Cp%3E%3Cstrong%3E%5Btex%5DA%3D2%CF%80rh%2B2%CF%80%20%7Br%7D%5E%7B2%7D%20)
= 2π 6*5+2π6*6= 188.495+226.194
SA= 414.689 cm^2
5)
2π7*4+2π*4*4=
SA=276.46 cm^2
6)
2π6*4+2π*4*4=
SA= 251.33 cm^2
7)
(3*4)/2=6
(3*4)/2=6
(3*8)=24
4*8=32
8*5=40
SA =6+6+24+32+40=108 cm^2
8)
(6*8)/2=24
(6*8)/2=24
6*12=72
8*12=96
10*12=120
SA= 24+24+72+96+120= 336 cm^2
9)
(5*12)/2=30
(5*12)/2=30
5*8=40
12*8=96
13*8=104
SA= 30+30+40+96+104= 300 cm^2
Answer:
x=
6
2−
148
=
3
1−
37
=−1.694
x=
6
2+
148
=
3
1+
37
=2.361
Step-by-step explanation: