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rosijanka [135]
2 years ago
14

You jog 2 kilometers in 12 minutes. Your friend jogs 3 kilometers in 16.5 minutes. Who jogs faster? You jog faster. Your friend

jogs faster. Question 2 How much sooner will the faster jogger finish a five-kilometer race?
Mathematics
1 answer:
Darya [45]2 years ago
4 0

Answer:

a) Who jogs faster?

Your friend jogs faster because he jogs with a speed of 10.91 km/hr

Step-by-step explanation:

Speed = Distance(km)/Time(hours)

Question 2 How much sooner will the faster jogger finish a five-kilometer race?

Your friend's will finish a 5km race at a speed of 18.18 km/hr

Your speed is :

You jog 2 kilometers in 12 minutes.

Convert 12 minutes to hours

60 minutes = 1 hour

12 minutes = x

x = 12/60

x = 1/5 hour

Your speed is calculated as:

2km/1/5hour

= 2 km ÷ 1/5 hour

= 2 × 5

= 10 km/hr

Your friend's speed is calculated as:

Your friend jogs 3 kilometers in 16.5 minutes.

Convert 16.5 minutes to hours

60 minutes = 1 hour

16.5 minutes = x

x = 16.5/60

x = 0.275 hour

Your speed is calculated as:

3km/0.275 hour

= 10.909090909 km/hr

Approximately = 10.91km/hr

a) Who jogs faster?

Your friend jogs faster because he jogs with a speed of 10.91 km/hr

Question 2 How much sooner will the faster jogger finish a five-kilometer race?

Your friend jogs faster, hence:

3 km = 10.91 km/hr

5km = x

x = 5 × 10.91/3

x = 18.183333333 km/hr

Your friend's will finish a 5km race at a speed of 18.18 km/hr

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xxMikexx [17]

Answer: 34.2%

Step-by-step explanation:

76% of undergrads in The College

45% of those are male (since 55% female)

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4 0
3 years ago
Point B is halfway between A and C. The distance from C to D is the same as the distance from D to E, which is the same as the d
jek_recluse [69]

Answer:

60

Step-by-step explanation:

area of triangle ACF is (1/2) (AC) (CF) = 180

area of triangle BCE = (1/2) (BC) (CE)

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8 0
2 years ago
PLEASE HELP! I ONLY HAVE 10 MINUTES LEFT!
Simora [160]

Answer:

Multiplacation

Step-by-step explanation:

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8 0
3 years ago
Which equation in the form y = mx + cs models Emma's situation?
Igoryamba

Answer:

The standard form for linear equations in two variables is Ax+By=C. For example, 2x+3y=5 is a linear equation in standard form. When an equation is given in this form, it's pretty easy to find both intercepts (x and y).

Step-by-step explanation:

hope this helps you :)

8 0
3 years ago
Kayden is working two summer jobs, making $19 per hour lifeguarding and making $9 per hour walking dogs. In a given week, he can
Varvara68 [4.7K]

Answer:

Kayden spends 15 hours lifeguarding and 3 hours walking dogs

Graph is attached.

Step-by-step explanation:

Given: x represents the number of hours lifeguarding and y represents the number of hours walking dogs.

Kayden is asking $19 per hour lifeguarding and making $9 per hour walking dogs

To find: system of inequalities graphically and one possible solution

Solution:

As Kayden can work no more than 20 total hours,

x+y\leq 20

As Kayden must earn no less than $270,

19x+9y\geq 270

Graph of both the inequalities are attached.

Red part denotes x+y\leq 20 and blue part denotes 19x+9y\geq 270

Solution is marked as (15,3) .

So, Kayden spends 15 hours lifeguarding and 3 hours walking dogs.

Download pptx
7 0
3 years ago
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