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DiKsa [7]
3 years ago
9

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the

Mathematics
1 answer:
pshichka [43]3 years ago
7 0

Answer:

10.05

Step-by-step explanation:

-16x2+148x+128=0 (we can divide out a -4 )

4x2-37x-32=0, (now use the quadratic formula)

(37±sqrt(372-4(4)(-32))/(2*4)=x, x=10.046 & x=-.796

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the teacher of a senior class needs to choose 4 members of the class to represent the school. if there are 10 seniors in the cla
3241004551 [841]
There are 10 seniors in the class, from which 4 should be chosen by the teacher. The order of the chosen students does not matter. This means that we speak of combinations. THe equation for calculating the number of possible combinations is:
C=N!/R!(N-R), where N is the total number of objects and R is the number of objects we select from the N 
In our case, N=10, R=4.
C= 10!/4!*6!=10*9*8*7*6!/6!*4*3*2*1=<span>10*9*8*7/24=5040/24=210
There are 210 different ways for the teacher to choose 4 seniors in no particular order.</span>
6 0
3 years ago
Simplify 0.5 (-77.8-11)/ -4 show all your steps
Mekhanik [1.2K]

Answer:

11.1

Step-by-step explanation:

0.5(−77.8−11)/−4

=(0.5)(−88.8)/−4

=−44.4/−4

=11.1

3 0
3 years ago
What is equivalent to the expression: (10g^3 - 8g^2 + 5g - 14) + (10g^2 + 12g)
irinina [24]
10g^3 - 8g^2 + 5g - 14 + 10g^2 + 12g
its just a matter of combining like terms
10g^3 + 2g^2 + 17g - 14
5 0
3 years ago
1. Ellie has at most $25 to spend on miscellaneous items each week. She has already spent
gregori [183]

Answer:

y= $25-$10.50

Step-by-step explanation:

5 0
3 years ago
What is 1/9 * 1/10= *please answer fast!
mamaluj [8]

Answer: 1/90

multiply 1/10 and 1/9 across, and you get 1/90

\frac{1}{9} × \frac{1}{10} = \frac{1}{90}

hope it helps!!!

6 0
2 years ago
Read 2 more answers
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