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Snowcat [4.5K]
3 years ago
8

It took Mary 40 minutes to run 8 laps around the playground, if she spent the same time running each lap, how long would it take

to run 9 laps?
Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

it should take her 45 minutes to run 9 laps

Step-by-step explanation:

40/8 = 5

9*5 = 45

Kryger [21]3 years ago
5 0
The answer is that it takes Mary 45 minutes to run 9 laps.

Divide 40 minutes by 8 laps (40/8), which equals 5 minutes per 1 lap.

Now, multiply 5 minutes by 9 laps to get 45 minutes total.
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a plumber needs to replace 20 feet of copper piping. When he gets to the supply store, the lengths are given in meters. How many
larisa [96]
6 meters. You just need to switch the feet to meters.
7 0
3 years ago
If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?
rusak2 [61]

Answer:

Two complex roots

Step-by-step explanation:

Discriminant negative means no real roots.

So roots are complex.

For every polynomial, complex roots occur in conjugate pairs

3 0
3 years ago
What is the image point of (5,2) after a translation left 1 unit and down 2 units?
alexira [117]

Answer:

(4, 0 )

Step-by-step explanation:

A translation of 1 unit left, subtract 1 from the original x- coordinate

A translation of 2 units down, subtract 2 from the original y- coordinate

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3 0
4 years ago
There are two less nickels than dimes, and as many quarters, as nickels and dimes together. The total amount of money is $5.25.
eduard
There are 7 nickels, 9 dimes, and 16 quarters. If you do the math 7 nickels equals 35 cents, 9 dimes equal 90 cents, and 16 quarters equals $4.00, which all adds up to $5.25. Also the numbers follow the rules because 7 is two less than nine and 16 is 9+7. 
8 0
3 years ago
Read 2 more answers
In Part C, you determined that the proper ratio of packages of buns, packages of patties, and jars of pickles is 3:2:4. If you w
andrew-mc [135]

Answer:

packages of buns = 1,260

packages of patties = 840

Jars of pickles = 1,680

Step-by-step explanation:

packages of buns = 3

packages of patties = 2

Jars of pickles = 4

Number of people = 420

Each person of the 420 people gets packages of buns, packages of patties, and jars of pickles in the ratio 3:2:4

packages of buns needed for 420 people = 3 × 420

= 1,260

packages of patties needed for 420 people = 2 × 420

= 840

Jars of pickles needed for 420 people = 4 × 420

= 1,680

packages of buns = 1,260

packages of patties = 840

Jars of pickles = 1,680

To feed at least 420 people minimum number of packages of buns, packages of patties, and jars of pickles needed is 1,260, 840, 1,680 respectively.

3 0
3 years ago
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