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rosijanka [135]
3 years ago
12

She earns $20 per hour as a carpenter and $25 per hour as a blacksmith. Last week Giselle worked both jobs for a total of 30 hou

rs and earn a total of $690 how long did she work as a carpenter last week and how long did she work as a blacksmith
Mathematics
2 answers:
dybincka [34]3 years ago
6 0
She wore as a carpenter for 12 hours (20 x 12 = 240) and she worked as a blacksmith for 18 hours (25 x 18 = 450) 240 + 450 = 690
Verizon [17]3 years ago
3 0

Answer:

There is a few combinations but as carpenter it is (9.5hrs x $20=$190 ) and as a blacksmith 20 x $25= 500

Step-by-step explanation:

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Carly has 15 stuffed animals. How many ways are there to organize her top 3 favorites?
Ivanshal [37]
Well, the answer will depend on whether the order will count or not (based on Permutations and Combinations). <em>If the order counts</em>, then we would use the formula for Permutations, which is:
\frac{n!}{(n-r)!}
Where n is the number of items you have, and r is the number of times you choose from the items.
\frac{15!}{(15-3)!}
Which simplifies to
\frac{15!}{(12)!}
Which simplifies to 15*14*13 (because all the numbers 1-12 in the factorial canceled out), which gets us the answer 2730.

Now, if you wanted to find the number of ways to order the toys without replacement (<em>order doesn't count</em>), you would use the formula:
\frac{n!}{r!(n-r)!}
The  variables are still the same, but you are now multiplying by r!.
\frac{15!}{3!(15-3)!}
Simplifies to
\frac{15!}{3!(12)!}
Which simplifies to (using the same cancellation method above)
\frac{2730}{3!}
Dividing 2730 by 3! will get us an answer of 455.

Really, it depends on whether they are ordered or not. In this case (since you didn't specify whether the order mattered), the answer would be 455 or 2730.

:)
4 0
3 years ago
Please help me and I’ll give you brainiest!!!!!!!!!
Aleksandr-060686 [28]

Answer:

Graph it on a graphing calculator

Step-by-step explanation:

6 0
3 years ago
You found the prime factorization of the number 73 explain how you can check your answer
antoniya [11.8K]

9514 1404 393

Explanation:

You can check your answer by making sure that each of the primes you found is actually a prime. (Compare to a list of known primes, for example.) After you have determined your factors are primes, multiply them together to see if the result is 73. If so, you have found the correct prime factorization.

__

<em>Additional comment</em>

73 is prime, so its prime factor is 73.

  73 = 73

4 0
3 years ago
Write the​ point-slope form of the​ line's equation satisfying the given conditions. Then use the​ point-slope form of the equat
AnnyKZ [126]

Answer:

Step-by-step explanation:

y - 5 = 4(x - 7)

y - 5 = 4x - 28

y = 4x - 23

7 0
3 years ago
15 liters decreased by 60%
puteri [66]
15 divided by 60= 3.50
8 0
3 years ago
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