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Jobisdone [24]
3 years ago
10

Alyssa and her brother luke are racing. Cars around as track . It takes a Alyssa car 15 seconds to go one complete run around th

e track. It takes lucks car 13. Seconds to go around the track one time . How many seconds will it take for both cars to return to the starting point at the same time .
Mathematics
1 answer:
Olegator [25]3 years ago
7 0

Answer:

195 s

Step-by-step explanation:

Question is asking for LCM

Alyssa=15secs

Luke=13secs

let t be time to return to same spot

Find prime factorization of each time.

15=3*5

13=13

LCM=3*5*13=195

t=195 secs

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Answer:

12 inches

Step-by-step explanation:

Given

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A cosmetics company makes three batches of a nail polish color called Purple Dusk using the recipe shown.
Ivanshal [37]

Answer:

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Step-by-step explanation:

Batch 1

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1/12   ......................... 5/2 / 5 =  5/10 = 1/2 ounce.

Red paint.

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Blue paint.

Similarly to the above amount of blue paint =  1/4 =3/12

= 3 * 1/2 = 1 1/2 ounces of  blue paint.

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We can calculate the missing quantities in a similar way to Batch 1.

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Batch 3.

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So 1/12 = 10/3  / 4 = 10/12 = 5/6 ounces.

White paint = 5/6 * 5 = 4 1/6 ounces.

Blue paint = 5/6 * 3 = 15/6 = 2 1/2  ounces.




3 0
3 years ago
Solve for x 4x^2+28x+49=0
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Answer: x = -7/2
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3 years ago
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