Answer:
<h3>
7 + 2x</h3>
Step-by-step explanation:
the product of two and a number x is 2•x
so the sum of <u>seven</u> and the product of two and a number x is:
7 + 2x
18+18=36 so there are 36 cookies altogether
Answer:
Step-by-step explanation:
Consider similar triangles BMC and KMN.
In these triangles,
where O is the point of intersection of BC and MP.
Note that segment OP has the length the same as the side of the square ABCD. Hence,
Answer:
after 21 seconds
Step-by-step explanation:
Given
h = - 16t² + 272t + 1344
When the ball strikes the ground then h = 0, that is
- 16t² + 272t + 1344 = 0 ( divide through by - 16 )
t² - 17t - 84 = 0 ← in standard form
(t - 21)(t + 4) = 0 ← in factored form
Equate each factor to zero and solve for t
t - 21 = 0 ⇒ t = 21
t + 4 = 0 ⇒ t = - 4
However t > 0 thus t = 21
The ball strikes the ground after 21 seconds.
B because first you do the two triangles which =3 then you get the area for the square in the middle which is 15 then you add them up to get 18
