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2 years ago

Please HElppppppppppppp meeeeeeee! I have less than 10 minutes!

Mathematics

1 answer:

attashe74 [19]2 years ago

8 0

Answer:

A) 5 3/10

B) 785 3/20

Step-by-step explanation:

Hope this helps <3

you find a common denominator and then simplify all fractions to that common denominator. then, you add them up!

2 1/5 + 3 1/10

5 can fit into 10 twice so it becomes...

2 2/10 + 3 1/10 which equals

472 2/5 + 312 3/4

5 times 4 is 20

472 8/20 + 312 15/20

there is a remainder of 3 for the fractions so you put it over 20.

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The distance that Sarah travels varies directly to how long she drives. She travels 440 miles in 8 hours.

lesantik [10]

440/8 will get you how many miles Sarah travel in 1 hour.

But Sarah travels 55 miles in 1 hour.

Sarah can travel 330 miles in 6 hour.

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2 years ago

Read 2 more answers

A bike rental company charges $10 plus a charge per for the distance ridden. the total cost, t, can be represented by the equati

goblinko [34]

Answer:

$c=\frac{t-10}{m}$

Step-by-step explanation:

$t=10+cm$

Subtract 10 from both sides:

$t-10=cm$

Divide both sides by $m$ :

$\frac{t-10}{m}=c$

Placing $c$ on the left:

$c=\frac{t-10}{m}$

For example, if the total charge is $27.50 and the distance ridden is 250 mi, we can calculate the additional cost per mile, as such:

$c=\frac{27.50-10}{250}$

$c=0.07$

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1 year ago

The PTA makes a $5.00 profit on each school sweatshirt they sell. If they made a

Scilla [17]

Answer:

434 sweatshirts were sold

Step-by-step explanation:

$2,170/$5 = 434

7 0

2 years ago

A rectangle has an area of 48 square units and a perimeter of 32 units. What are its dimensions?

baherus [9]

Area is length x width, and perimeter is adding up all the sides together
so if it’s 32 for the perimeter, then the dimensions should be 12 and 4
12x4 is 48
12+12+4+4 is 32

5 0

2 years ago

The vertex of the parabola below is at the point (1,3), and the point (2,6) is

Inessa05 [86]

Answer:

B. y=3(x-1)2 + 3

Step-by-step explanation:

Given that

vertex of the parabola is at the point (1,3)

let's verify, if the option B is the correct equation of the parabola.

$y=3(x-1)^2 + 3\\ \\y=3(x^2+1-2x) + 3\\\\y=3x^2+3-6x + 3\\\\y=3x^2-6x + 6....Eq1$

comparing to standard equationof parabola (standard quadratic equation), we get

$a=3, b=-6 and c=6$

to find the vertex we use formula for x- coordinate as $x=-b/2a$

$x=-(-6)/2(3)\\\\x=6/6\\x=1$

to find y put x=1 in the Eq1, we get

$y=3(1)^2-6(1)+6\\\\y=3-6+6\\\\y=3$

vertex =(x,y) = (1, 3)

thus vertex of the parabola from the equation y=3(x-1)2 + 3 is (1,3), thus verified

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2 years ago