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4 years ago

10. Mark ran 3 miles everyday for 2 weeks. How far did mark run in all?

Mathematics

2 answers:

marissa [1.9K]4 years ago

8 0

Answer:

42 miles

Step-by-step explanation:

2 weeks= 14 days

3 miles everyday times 14

= 42 miles

Alexxandr [17]4 years ago

5 0

14 days = 2 weeks so

14 times 3 = 42

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If you want to convert 40 degrees Celsius to degrees Fahrenheit, you can do it this way:
40°C * 9/5 + 32 = 104°F

The correct result is B. 104°F.

Other options:
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C. 54°F = 12.2°C
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4 years ago

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A u.s. social security number is a nine-digit number. the first digit(s) may be 0. how many have exactly one didgit equal to 8

strojnjashka [21]

Think of the SS numbers as being a collection of digits. If any of the digits (say the first one for example) are 8 then all the remaining digits can be anything but 8, meaning there are 9 choices for each remaining digit. This effectively becomes an 8 digit number with the constraint that there can only be 9 choices for a digit. This means for the first digit being 8 we have 9⁸ remaining possible numbers. Since we will do this for each of the remaining digits (they each get to be 8 then we count their 9⁸ configurations) we end up with 9(9⁸) or 9⁹≈3.8742E8

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4 years ago

Chris is having custom t-shirts printed for a family reunion. The total cost of custom t-shirts, y, in dollars, for x t-shirts i

Nuetrik [128]

Answer:

C. Each additional t-shirt being printed will increase the total cost by $11.

Step-by-step explanation:

We know that the total cost of custom t-shirts, y, in dollars, for x t-shirts is given by:

$y = 11x + 25$

Here 11 is the price of the shirt, x is the number of shirts that are printed and 25 might be some additional charges.

For each additional shirt that is printed, the total price, y, will increase by $11 so the correct answer option is C.

6 0

3 years ago

Two trains start from Fort Worth traveling at the same speed. The trip for Train W takes 20 hours, while the trip for Train Z ta

MrMuchimi

Answer:

The equation that best models this situation is :

b. $\frac{x}{20}=\frac{x+400}{25}$

Distance traveled by Train W = 1600 miles

Distance traveled by Train Z = 2,000 miles

Step-by-step explanation:

Given:

Time taken for Train W to complete a trip = 20 hours

Time taken for Train Z to complete a trip = 25 hours

The city Train Z is traveling to is 400 miles farther away than the city Train W is traveling to.

both trains have same speeds and start from same location.

To find the distance in total each train travels.

Solution:

Let length of the trip of Train W be = $x$ miles

Speed of Train W can be given as :

⇒ $\frac{Distance}{Time}$

⇒ $\frac{x}{20}\ miles/h$

So, the length of the trip of Train Z will be = $(x+400)$ miles

Speed of Train Z can be given as :

⇒ $\frac{Distance}{Time}$

⇒ $\frac{x+400}{25}\ miles/h$

Since the speeds are same, so the equation to find $x$ can be given as:

⇒ $\frac{x}{20}=\frac{x+400}{25}$

Solving for $x$

Multiplying both sides by 100 to remove fractions.

⇒ $100\times \frac{x}{20}=100\times \frac{x+400}{25}$

⇒ $5x=4(x+400)$

Using distribution.

⇒ $5x=4x+1600$

Subtracting both sides by $4x$

⇒ $5x-4x=4x-4x+1600$

⇒ $x=1600$

Thus, Distance traveled by Train W = 1600 miles

Distance traveled by Train Z = $1600+400$ = 2,000 miles

3 0

3 years ago

Sams building a suspension bridge for the playground at the elementary school I needed some chain-link and some rope he bought a

a_sh-v [17]

Answer:

Amount of material for chain link = 30 feet

Amount of material for rope = 50 feet

Step-by-step explanation:

Let the amount of chain link = X

The amount of rope be represented by Y

He bought a total of 80 feet of materials

Hence we have:

X + Y = 80 ....... Equation 1

Y = 80 - X

The chain-link cost two dollars per foot and the rope cost 1.50 per foot he spent a total of $135

X × $2 + Y × $1.50 = $135

2X + 1.5Y = 135 ......Equation 2

Substitute 80 - X for Y in Equation 2

2X + 1.5(80 - X) = 135

2X + 120 - 1.5X = 135

Collect like terms

2X - 1.5X = 135 - 120

0.5X = 15

X = 15/0.5

X = 30 feet

Substitute 30 feet for X in Equation 1

X + Y = 80 ....... Equation 1

30 + Y = 80

Y = 80 - 30

Y = 50 feet

Hence the amount of material he used for the chain link = 30 feet and the amount of material he used for the rope was = 50 feet

6 0

4 years ago

10. Mark ran 3 miles everyday for 2 weeks. How far did mark run in all?​

10. Mark ran 3 miles everyday for 2 weeks. How far did mark run in all?