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3 years ago

Explain how place value could be used to find the difference between 4.23 into 2.75

Mathematics

1 answer:

Tomtit [17]3 years ago

5 0

Because without place value you might put the decimal in the wrong place and that will effect the answer big time.

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Trina's Toy Company charges $0.85 per pound to ship toys.

Triss [41]

A $0.85 x 2= amount for shipping.
B $0.85-0.05 = total cost for each pound
so the equation would be.
$0.85-0.05 = 0.8
0.8x2 = cost for 2 pounds of toys shipped
1.60 is the cost for 2 pounds hope this helped

7 0

4 years ago

Dilbert invests a total of $26,000 in two accounts paying 14% and 2% annual interest, respectively. How much was invested in eac

olganol [36]

Answer:

$17,000 at 14% and $9,000 at 2%

Step-by-step explanation:

Let x = amount invested at 14%.

Let y = amount invested at 2%.

x + y = 26000

0.14x + 0.02y = 2560

-0.02x - 0.02y = -520

(+) 0.14x + 0.02y = 2560

-------------------------------------

0.12x = 2040

x = 17,000

x + y = 26000

17000 + y = 26000

y = 9000

Answer: $17,000 at 14% and $9,000 at 2%

4 0

3 years ago

Sandy is upgrading her internet service. Fast internet charges $60 for installation $50.45 per month. Quick internet has free in

Dvinal [7]

Fast internet : 60 + 50.45m
Quick internet : 57.95m

to find the number of months they would be equal....set them equal to each other and solve for m, the number of months

60 + 50.45m = 57.95m
60 = 57.95m - 50.45m
60 = 7.50m
60/7.50 = m
8 = m.....so they will be the same at 8 months

7 0

4 years ago

Two planes start flying towards each other simultaneously from two different cities. The distance between the cities is 960 mile

Eddi Din [679]

Answer:

The speed of one plane = 257.5 miles per hour

And speed of second plane = 332.5 miles per hour

Step-by-step explanation:

We have given,

Distance between two cities = 960 miles

Two planes are flying towards each other.

Let the speed of one plane be x.

Then,

Speed of second plane = x+75 {Following this "one of the planes' speed exceeds the other by 75 mph"]

After 1.5 hours they are still 75 miles apart.

i.e Relative distance between two planes = Relative speed of plane × Time

Here

relative speed = x + (x+75) , and relative distance left to cover = 960-75.

i.e

(960 - 75) = {x+(x+75)}×1.5

885 = (2x+75)×1.5

or $\frac{885}{1.5} =2x+75$

or 590-75 = 2x

or 515 = 2x

or x = $\frac{515}{2}$ = 257.5

Hence the speed of one plane = x = 257.5 miles per hour

And speed of second plane = (x+75) = 257.5 + 75 = 332.5 miles per hour

6 0

3 years ago

There is a bag filled with 4 blue and 5 red marbles.

jeyben [28]

The answer you’ll be 1/5 ! I hope this helps

6 0

3 years ago