a boat travels at a constant speed. after 20 minutes, the boat has traveled 2.5 miles. The boat travels a total of 10 miles to a bridge.

Answers

Answer 1
Answer:

The speed of the boat is 0.125 miles/ minute, The time in which the total distance will be covered is 80 minutes.

What is Speed?

Speed is the rate at which an object travels certain distance in fixed period of time.

The distance covered by the boat is 10 miles

The time in which the distance is covered is 20 minutes

The speed of the boat is = distance / time

Speed = 2.5/ 20 = 0.125 miles/ minute

The time in which the total distance will be covered is

Time = 10 /0.125 = 80 minutes

The complete question is

What is the time required to complete the journey?

To know more about Speed

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Answer 2
Answer: 2.5=20 min
10/2.5=4
20 x 4 equals 80

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Sari has a bag containing 6 half dollars and 3 dollar coins. What is the total mass of the coins in Sari's bag? PLZ HELP... :)

Answers

Answer with explanation:

Number of half Dollars in Sari's Bag= 6 Half Dollars

1 Half Dollar =50 cents=1 coin

or, 6 Half Dollars =3 Dollars

It means there are 6 cents in Sari's Bag or 3 Dollars in the Sari's bag.

Total Number of Coins in Sari's Bag=(3 Dollar coins+3 Dollar coins)or (3 Dollar coins+ 6 Cents coins)

⇒→Total Mass of the coins in Sari's Bag=Mass of(3 Dollar coins+6 Cent coin) or Mass of (3 Dollar coins+3 Dollar coins)

=Mass of(3 Dollar coins+6 Cent coins) or Mass of (6 Dollar coins)

Well, if she has 6 half dollars, that is 6 coins.
If she has 3 dollar coins, that is 3 coins. 
altogether that is 9 coins.

are you sure you worded the question right because that was really easy

33.52 is what percent of 8 ?

Answers

to solve any equation like this you always use 
____% of ___ is ____.
In this case it is
x% of 8 is 33.52
8x=33.52
x=4.19
x=419%
let the percentage be x.  we can rephrase the question to be more clear by saying: x percent of 8 is 33.52 and find x.  to put this line in terms of equations we write:
x(8) = 33.52
now we can solve for x by dividing both sides of the equation by 8:
x = 4.19
remember that we need to put our answer in percent form so we want (percent)/100 = 4.19 and therefore percent is 419.
our answer is 419%

let me know if you have any questions!

Which polynomial has (3x + 2) as a binomial factor? 6x3 + 3x2 + 4x + 2 12x2 + 15x + 8x + 10 18x3 – 12x2 + 9x – 6 21x4 + 7x3 + 6x + 2

Answers

If binomial (3x+2) is  a factor of some polynomial, then number x=-(2)/(3) is this polynomial's root. Check all polynomials:

A. For the polynomial 6x^3 + 3x^2 + 4x + 2,

6\left(-(2)/(3)\right)^3 + 3\left(-(2)/(3)\right)^2 + 4\left(-(2)/(3)\right) + 2=-(16)/(9)+(4)/(3)-(8)/(3)+2=-(10)/(9)\neq 0.

B. For the polynomial 12x^2 + 15x + 8x + 10,

12\left(-(2)/(3)\right)^2 + 23\left(-(2)/(3)\right) + 10=(16)/(3)-(46)/(3)+10=0.

C. For the polynomial 18x^3-12x^2 + 9x-6,

18\left(-(2)/(3)\right)^3 -12\left(-(2)/(3)\right)^2 + 9\left(-(2)/(3)\right) -6=-(16)/(3)-(16)/(3)-6-6\neq 0.

D. For the polynomial 21x^4 + 7x^3 + 6x + 2,

21\left(-(2)/(3)\right)^4 +7\left(-(2)/(3)\right)^3 +6\left(-(2)/(3)\right) +2=(112)/(27)-(56)/(27)-4+2\neq 0.

Answer: correct choice is B

Answer:

B 12x2 + 15x + 8x + 10

Step-by-step explanation:

Did it

Rita is making chili.The recipe calls for 2 3/4 cups of tomatoes. How many cups of tomatoes, written as a fraction greater than one,are used in the recipe?

Answers

the fraction is 1 3/4 greater than the one, are used in the recipe?

$4 is what percent of $50?

Answers

4 is what percent of 50?

           P% = 4/50
p = 0.08

             From decimal to percent:

P% = 0.08 * 100 = 8%
you turn $4 out of $50 into 4/50 and multiply by 2 therefor 8%

the diameter of a U.S penny is 3/4 inch. how many pennies would it take to make a row 42 inches long?

Answers

Answer: 56

Step-by-step explanation:

We are given that ,

The diameter of each U.S. penny = (3)/(4) inch.

The length of the row of pennies = 42 inches

Then , the number of pennies in that row will be :

=\text{Length of row}/\text{Diameter of each penny}\n\n=42/(3)/(4)\n\n=42*(4)/(3)\ \ \text{[Flip divisor fraction, multiply the original number by its reciprocal.]}\n\n=56  

Hence, the required number of pennies. = 56

42 divided by 3/4 equals 56 pennies