Answer:
3x^2 + 3xz + 2y^2 - 2yz - xy
Step-by-step explanation:
(1) multiply it to get
3x^2 - 3xy + 3xz and 2yx + 2y^2 - 2yz
add similar variables (-3xy + 2yx)
( the order of the variables doesn't matter xy or yx is the same)
we get -xy
and then after that simplifying we get 3x^2 + 3xz + 2y^2 - 2yz - xy
The time it will take the roller coaster to reach the ground is 171.65 seconds
<h3>Function and values</h3>
Given the roller coaster’s height given by the following parameters
h = –0.025t² + 4t + 50
On the ground level, the height will be zero. Substitute h = 0 and determine the value of t
–0.025t² + 4t + 50 = 0
0.025t² - 4t - 50 = 0
Factorize
On factorizing the time it will take the roller coaster to reach the ground is 171.65 seconds
Learn more on functions here: brainly.com/question/10439235
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Change 15/20 to 3/4
Now we have
multiply 6 to 3= 18 ÷ 4 = 4.5
x = 4.5
6(2 - 7v) - 4(-6v + 7)
multiply the first bracket by 6
(6)(2)=-12
(6)(-7v)=-42v
multiply the second bracket by -4
(-4)(-6v)=-24v
(-4)(7)=-28
12-42v+24v-28
-16-18v
Answer:
-16-18v or -18v-16
