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LenKa [72]
3 years ago
15

If f(x)=x/2-3and g(x)=4x^2+x-4, find (f+g)(x)

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
4 0

Step-by-step explanation:

(f+g)(x) = f(x) + g(x)

= x/2-3 + 4x²+x+4

= ..........

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5. An airplane takes 4 hr to travel a distance of 4100 km. Another airplane travels at a speed
Mazyrski [523]

Answer:

4.969696 hours

Step-by-step explanation:

The distance traveled is shown through the following equations

Distance = velocity * time

This means that

4100=velocity*4

This means that ariplane 1 travles at 1025 km/hr

We can then subtract 200 from this to find that airplane two travels at a speed of 825 km/hr

Now we need to find how long it takes for that plane to travel 4100

So using the same equation

4100=825*time

Divison will tell us that the answer is around 4.9696 hours which is pretty much 5

7 0
3 years ago
Please help, I’ll mark your answer as brainliest.
valentina_108 [34]

Answer:

x = - \frac{13}{2} - \sqrt{157}/ 2 or

x= - 13/2 + \sqrt{157}/ 2

Step-by-step explanation:

1- Substitute and calculate

if you don't want to give me brainlist its okay I don't mind I just like helping people with their problems

4 0
2 years ago
A 12 ounce bottle of shampoo last enrique 16 weeks.how lonh would you expect an 18 ounce bottle of the same brand to last him?
tankabanditka [31]
For Enrique a 12 ounce bottle lasts for 16 weeks. This is a known fact. We need to find the amount of days or weeks an 18 ounce bottle of the same brand of shampoo last.
Now
12 ounce bottle lasts = 16 weeks
                                   = (16 * 7) days
                                   = 112 days
18 ounce bottle lasts = (112/12) * 18
                                  = 168 days
                                 = 168/7 weeks
                                 = 24 weeks
So 18 ounce of the same brand of shampoo will last for 24 weeks.
4 0
3 years ago
Debby was packing up some of her old stuff into a box a box can hold 9 pounds but she only filled it up 8/10 full how much weigh
Vikentia [17]
Multiply pounds box can hold by percent full.

= 9 * 8/10
= (9*8)/10
= 72/10
= 7.2 pounds full

ANSWER: 7.2 pounds was in the box

Hope this helps! :)
4 0
3 years ago
A rectangular deck is 12 ft by 14 ft. When the length and width are increased by the same amount, the area becomes 288 sq. ft. B
alexdok [17]
To solve this problem you must apply the proccedure shown below:

 1. You have the following information given in the problem above:

 - The<span> rectangular deck has the following dimensions: 12 ft by 14 ft.
 - When the length and width are increased by the same amount, the area becomes 288 ft</span>².

 2. Therefore, you have:

 A=bxh

 288=(12x)(14x)
 288=168x²

 3. When you clear the x, you obtain:

 x=√288/168
 x=(2√21)/7≈1.31
 
6 0
3 years ago
Read 2 more answers
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