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adell [148]
2 years ago
10

Subtract -6x^2- 2x + 5 from 2x^2 + 8.

Mathematics
1 answer:
steposvetlana [31]2 years ago
7 0

Answer:

−8x^2−2x+13

collect the like terms then simplify

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Based on your observations from Question 1, what is the relationship between AE and BF when DFB and CEA measure something other
VMariaS [17]

Answer:

if angle dfb and angle cea measure something other than 90degrees, then line we is not equal to line bf. in this case, line and and line cd intersect at a single point.

8 0
3 years ago
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A team of 17 softball players need to choose three players to refill the water cooler. How many different ways are there to sele
KATRIN_1 [288]
<h3>Answer: 680 different combinations</h3>

=======================================================

Explanation:

If order mattered, then we'd have 17*16*15 = 4080 different permutations. Notice how I started with 17 and counted down 1 at a a time until I had 3 slots to fill. We count down by 1 because each time we pick someone, we can't pick them again.

So we have 4080 different ways to pick 3 people if order mattered. But again order doesn't matter. All that counts is the group itself rather than the individual or how they rank. There are 3*2*1 = 6 ways to order any group of three people, which means there are 4080/6 = 680 different combinations possible.

An alternative is to use the nCr formula with n = 17 and r = 3. That formula is

_n C _r = \frac{n!}{r!*(n-r)!}

where the exclamation marks indicate factorials

5 0
3 years ago
What is the perimeter of the triangle? Round to the nearest tenth.
Jet001 [13]

Answer: what???

Step-by-step explanation:

4 0
3 years ago
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Supervisor a earns a flat rate of $25 per hour, while supervisor b earns $20 per hour for the first 30 hours and then 50% more f
mixas84 [53]
Let same number of hours = x, 
since the salary earned is also the same, then
Salary of supervisor A = $25x
Salary of supervisor B = $20(30)+$30(x-30)
Equating
25x=600+30(x-30)
30x-25x=900-600
5x=300
x=60 hours
Check:
Salary of supervisor A = 25*60=1500
Salary of supervisor B =  20*30+30*(60-30)=600+900=1500, ok.
5 0
3 years ago
Evaluate using Distributive property: [(-2/7)× (−4/9)] + [(-<br> 3/5)× (−4/9)]
crimeas [40]

Answer:

Step-by-step explanation:

[8/63] + [ 4/15 ]

= (120 + 652)/945

= 0.82

3 0
3 years ago
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