Answer:
83°
Step-by-step explanation:
A complementary angles' measurements will equal 90°. One of the angles = 7°. Subtract 7 from 90:
90 - 7 = 83
83° is the measurement of the complementary angle.
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<u>#7</u>
1. Find the volume of the pyramid (l×w×h/3); you should get 64cm³
2. Find the volume of the cube (l×w×h); you should get 512cm³
3. Add the two products; the glass paperweight's volume is 576cm³
<u>#8</u>
1. Find the surface area (SA) of the cube (area of one square×5); it is 320cm²
2. Find the SA of the pyramid (exclude the square base); it is 80cm² ((slant height×(length/2))×4)
3. Add the surface areas; the sum should be 400cm²
Answer:
a ) n = 1667
b) n= 5192
c) n=1500
Step-by-step explanation:
c= 95%
Expected value = E.v= 300 , 170 , 100
R = 35000-10000=25000
σ = R / 4 = 25000 / 4 = 6250
For sample size
b = ( zα/2 / 2σ / E )^2
where 1-α = 0.95 and
zα/2 = 1.96
then putting values one by one of E we get
E.v = 300
n= 1667
E.v = 170
n=5192
E.v =100
n= 1500
so for
a ) n = 1667
b) n= 5192
c) n=1500
Answer:
x = 2
Step-by-step explanation:
6x-1=11
Add 1 to each side
6x-1+1=11+1
6x = 12
Divide by 6
6x/6 = 12/6
x = 2
Answer:
(0,-4)
Step-by-step explanation: