The 9th student is in the middle.
⇒ There are 8 students before him
⇒ There are 8 students behind him
Total number of students = 8 + 1 + 8 = 17
Answer: 17
It is the second option or b
Answer:
972π cm³
Step-by-step explanation:
Okay so this container is a sphere, so you're going to want to use the volume of a sphere equation V = (4/3) * π * r³. In this case, you've got the diameter (d = 18), so divide by 2 to get r = 9.
So now you have all the variables you need to solve. Substituting those values into the volume equation, you get:
V = (4/3) * π * 9³ = 972π cm³.
Determine whether ∆DEF=∆JKL, given that D(2,0), E(5,0), F(5,5), J(3,-7), K(6,-7), and L(6,-2)
raketka [301]
Answer:
Yes , triangle DEF is congruent to JKL
Step-by-step explanation:
Given:
The coordinates of triangle DEF are;
D (2, 0)
E(5. 0)
F(5, 5)
and
the coordinates of triangle JKL are:
J(3, -7)
K(6, -7)
L (6, -2)
The rule of translation is used on triangle DEF to get triangle JKL:
i.e
= J
= K
= L
As, we know that two triangles are known as congruent if there is an isometry mapping one of the triangles to the other.
therefore, triangle DEF congruent to triangle JKL
