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poizon [28]
4 years ago
5

Each week, Rosario drives to an ice skating rink that is 120 miles away. The round-trip takes 2.75 hours. If he averages 55 mile

s per hour on his way to the rink, which equation can be used to find x, the number of miles per hour he averages on his way home?
Mathematics
2 answers:
ycow [4]4 years ago
6 0
Distance = rate * time

trip there,  120 = 55 *t
                   t = 2 and 2/11 hours

trip back,  120 = r * (2.75 - 2.181818181)  round trip time - time to get there
                 120 = r * .568181818181818
                  r = 211.2 miles per hour

thinking maybe you did not copy the problem accurately...thats pretty fast. 
zlopas [31]4 years ago
5 0
<span>First find how much time it took to make the trip to the skating rink. The skating rink is 120 miles away and his average speed is 55 miles per hour.</span>
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Factor completely 2X^3-2x-40
Sholpan [36]
2X^3-2x-40=0
Hope this helps
6 0
3 years ago
Shashi Rimoko earns $620 per week as a chef. He has group
finlep [7]

Out of the weekly amount that Shashi Rimoko makes, a deduction of $37.93 is made for insurance.

The total Medical cost is $9,560 and out of this, the amount paid by Shashi per year is:

<em>= Amount x (1 - percentage paid by restaurant)</em>

= 9,560 x ( 1 - 80%)

= $1,912

The amount he pays for Dental coverage is:

<em>= Amount x (1 - percentage paid by restaurant)</em>

= 172 x (1 - 65%)

= $60.20

The total amount he pays for insurance per year is:

<em>= Medical + Dental </em>

= 1,912 + 60.20

= $1,972.20

The weekly deduction is:

<em>= Year amount / No. of weeks in year </em>

= 1,972.20 / 52

= $37.93

In conclusion, $37.93 is deducted from his paycheck every week.

<em>Find out more at brainly.com/question/16711490.</em>

4 0
2 years ago
Please help asap!!!!!
Morgarella [4.7K]

Answer:

the area = 25

Step-by-step explanation:

a= side length x side length

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8 0
3 years ago
Read 2 more answers
What is the slope-intercept form of the equation y - 7= -5/2(x+4)
GREYUIT [131]
The first thing I would probably do is distribute (multiply) the -5/2 into the parenthesis:

= (-5/2)x + (-20/2)

Notice how I am not putting the x into the fraction. This is to make it easier to see the slope-intercept form.

Lets simplify the (-20/2) and then add 7 to both sides:

y - 7 = (-5/2)x - 10

y = (-5/2)x - 3

Your answer would then be:

y = (-5/2)x - 3

y = mx + b

Since it is now in the requested format.
4 0
3 years ago
Mrs. Benson has graded 46 math assignments but has 80% of the assignments left to grade. Mrs. Benson has how many math assignmen
timofeeve [1]

Mrs. Benson has 184 math assignments left to grade.

<u>Step-by-step explanation:</u>

Here we have , Mrs. Benson has graded 46 math assignments but has 80% of the assignments left to grade.We need to find Mrs. Benson has how many math assignments left to grade. Let's find out:

Let total Number of math assignments be x , So According to question 46 math assignments are graded & 80% are left i.e.

⇒ x = 46+\frac{80x}{100}

⇒ x -\frac{80x}{100}= 46

⇒ \frac{100x-80x}{100}= 46

⇒ \frac{20x}{100}= 46

⇒ \frac{x}{5}= 46

⇒ x=230

Now , Assignments left to grade is :

⇒ 230-46

⇒ 184

Therefore , Mrs. Benson has 184 math assignments left to grade.

4 0
3 years ago
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