2x < 10
Solving:
Divide each side by 2
x < 5
Hope this helps!
Answer:
Step-by-step explanation:
here
total surface area(TSA)= 462 cm²
TSA=3πr²
462 = 3*22/7*r²
462*7=66r²
3,234=66r²
3,234/66=r²
49=r²
√(49=r
r=7
therefore the radia of the hemisphere is 7
now,
volume of hemisphere(V) = (2/3)πr²
V=(2/3)*(22/7)*7²
V=44*7
V=308
Answer: B and D are the equIvalent expression.
Step-by-step explanation:
A is not the same because 2/5 is not the same as -2/5
C is not the same because 4/3p is not the same as -4/3p
D is not the same because they are both positive values instead of negative values.
Answer:
3/5 hour
4 1/3 miles per hour
6 1/15 miles per hour
Step-by-step explanation:
Given that the object is travelling at a steady speed of 8 2/3 miles per hour and covers 5 1/5 miles
Recall that distance = speed * time
hence
5 1/5 miles = 8 2/3 miles per hour * time t
26/5 = 26/3 * t
Multiply both sides by 3/26
26/5 * 3/26 = t
t = 3/5 hour
If the object reduces its speed by 1/2, the new speed
= 1/2 * 8 2/3 miles per hour
= 1/2 * 26/3
= 13/3 miles per hour
= 4 1/3 miles per hour
If the object reduces its speed by 30%, the new speed
= 8 2/3 miles per hour - 30% * 8 2/3 miles per hour
= 0.7 * 8 2/3 miles per hour
= 7/10 * 26/3
= 91/15
= 6 1/15 miles per hour
Remember you can do anything to an equation as long as you do it to both sides
pemdas
first, subsitue z for the blank
(4z)-(1+8x2)=3
simplify
(4z)-(1+16)=3
(4z)-(17)=3
4z-17=3
add 17 to both sides
4z+17-17=3+17
4z+0=20
4z=20
divide both sides by 4
4z/4=20/4
1z=5
z=5
the blank is 5
