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andrey2020 [161]
3 years ago
14

A cell phone app charges $1.19 to download a song and 4.99 membership fee write an expression that gives the total cost in dolla

rs to download songs then find the cost of downloading 9 songs
Mathematics
1 answer:
Andrew [12]3 years ago
5 0

Answer: $1.19X+ 4.99

then :$15.7

Step-by-step explanation: first you write the expression  which is $1.19X + 4.99 because $1.19 is the cost of per song download and X stands for the numer of songs .

then after  you khow the expression  you substitute ( which meanse to put something instead of a variable like X) 9 because 9 is the total number of song

that how you get $15.7 if you substutute 9 with X.

hi . i hope the explanation is helpful to you .

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What is this in its simplest form
Otrada [13]
-8/32=-8/(4*8)=-1/4.
5 0
3 years ago
Aden has a rectangular garden that is A feet wide and B feet long. If he increases each dimension of the garden by 4 feet, what
alekssr [168]

The only answer I could think of is P=(A+4)+(B+4).

7 0
3 years ago
Grady drove 34 miles to his grandmas house. Next he drove 48 miles to visit his uncle. The trip took 90 minutes. If he drove at
Alona [7]

Answer:

55 mph

Step-by-step explanation:

speed = 54.6667 miles per hour

approximately 55 miles per hour

hope this helps! :D

have a miraculous day!! <3

*plus, your stick student's dinner is pizza!! :D*

5 0
2 years ago
PLZ HELP OR I FAIL MY TEST
Volgvan

Answer:

time upstream=24/8=3 hours

time downstream=24/12=2 hours

Step-by-step explanation:

If R*T=D, and R is speed + or - current, how can you find the rate without the time, and how can you find the time without the rate?

THE KEY WAS WHEN WE WERE TOLD THAT IT TAKES ONE HOUR LONGER TO GO UPSTREAM THAN DOWNSTREAM BECAUSE T=D/R AND WE ARE TOLD THAT:

D/R(Upstream) minus 1 equals D/R (DOWNSTREAM)



Let x=rate of current

distance(d)=rate(r) times time(t) or d=rt or t=d/r

distance upstream=distance downstream=24 mi

rate upstream=10-x

rate downstream=10+x

time upstream=(distance upstream)/(rate upstream)=24/(10-x)

time downstream=(distance downstream)/(rate downstream)=24/(10+x)

Now, we are told that time upstream minus one hour equals time downstream. So our equation to solve is:

24/(10-x)-1=24/(10+x) Multiply both sides by (10-x)(10+x)

24(10+x)(10-x)/(10-x)-1(10-x)(10+x)=24(10-x)/(10+x)/(10+x) clear fractions


24(10+x)-(10-x)(10+x)=24(10-x) clear parens

240+24x-100-10x+10x+x^2=240-24x subtract 240 from and add 24x to both sides

240-240+24x+24x-100+x^2=240-240-24x+24x collect like terms

x^2+48x-100=0 ----------------quadratic equation in standard form

This equation can be factored:

(x+50)(x-2)=0

x=-50 mph----------------discount the negative value for speed

and

x=2 mph----------------------speed of the current

CK

10-x=10-2= 8 mph -----------------------speed upstream

10+x=10+2=12 mph--------------------------speed downstream

time upstream=24/8=3 hours

time downstream=24/12=2 hours

so 3-2=1----takes 1 hour longer upstream

7 0
3 years ago
What is 5 tens+ 19 ones equal? Gdyugygeuifh hfuiehfiuheoih fioh;ewiofhoiwe fhuowhrfiuho h j k l ;
Mrrafil [7]

5x10=50+19=69

Your answer is 69

4 0
3 years ago
Read 2 more answers
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