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dybincka [34]
3 years ago
15

James can finish a job in 1.5 hours. Jane can finish the same job in one hour. How long will it take them to finish this job if

they work together?
Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
8 0

Answer:

36 minutes

Step-by-step explanation:

thank me later

aleksandrvk [35]3 years ago
7 0
It will take an hour and 15 minutes
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How would you write 12–(3) using a positive exponent?
frosja888 [35]

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Step-by-step explanation:

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0.9 of Karen's Science score is equal to 0.75 of her Math score and 0.8 of her Chemistry score. Given that Karen scored 96 marks
DochEvi [55]

You have to formulate equations for this problem.

Let S = Science score

      M = Math score

       C = Chemistry score

To illustrate the given:

0.9S = 0.75M

0.9S = 0.8C

You are given that Karen’s Math score is 96 marks. You have to substitute the Math score to the first equation.

0.9S = 0.75(96)

0.9S = 72

S = 80

Therefore, Karen’s Science score is 80. Now, you have to substitute the Science score to the second equation.

0.9(80) = 0.8C

0.8C = 72

C = 90

So, Karen’s Chemistry score is 90.

Therefore, the total score of the 3 subjects is 266 (96 + 80 + 90).

5 0
3 years ago
Find two numbers that up to 158. The greater number is 40 more than the lesser number.
snow_tiger [21]
99 and 59

X=big number
X-40 = small

X+ x-40 =158
2X -40=158
2X =198
X=99. Big number is 99
99-40 =59

99+59=158
3 0
3 years ago
Compute the product of 645.99 and 0.125, and round to the nearest tenth
Burka [1]

Answer:

80.7 because you multiply

4 0
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