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garri49 [273]
3 years ago
12

Trevor earns R80 per hour. Calculate how many hours he must work to earn R720​

Mathematics
2 answers:
Alex787 [66]3 years ago
8 0
Divide 720 by 80 to get how many hours he worked to get 720

Answer is 9
lapo4ka [179]3 years ago
7 0

Answer:

9 Hours

Step-by-step explanation:

720/80=9

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How many two-digit positive integers can be formed the digits 1,5,6, and 8 if no digit is repeated?
IgorLugansk [536]

Answer:

12

Step-by-step explanation:

There are 4 different digits to choose from. Since we want 2-digit number, we will see what digits can we put in place of 1st digit and what digit can we place in place of 2nd digit.

Hence, <u><em>how many digits (from 1,5,6 and 8) can be placed in the 1st digit of the number we want?</em></u>

Any one of the four digits (1,5,6, or 8).

Now, <em><u>How many digits (from 1,5,6 and 8) can be placed as the 2nd digit of the number we want?</u></em>

Any one of the THREE digits (since repetition is not allowed, we disregard the initial digit).

Thus the number of two-digit positive integers is 4 * 3 = 12

5 0
3 years ago
What are the solutions of the following system x2+y2=25 , 2x+y=-5
tia_tia [17]
Y=5-2x
x^2 + (5-2x)^2 = 25

x^2 + 25-20x+4x^2 = 25

x^2 +4x^2-20x+25=25
5x^2 -20x=0

x=0 and y=5
6 0
2 years ago
Read 2 more answers
Given that, 1 Chinese yuan = £0.13, convert £314 into Chinese yuan. Give
Maurinko [17]

Answer:

2415 Chinese yuan (rounded off to nearest yuan)

Step-by-step explanation:

£0.13 = 1 Chinese yuan

£314 = \frac{314}{0.13}×1 Chinese yuan

       = 2415 Chinese yuan (rounded off to nearest yuan)

5 0
3 years ago
Simplify: 3r+n²-r+5-2n+2
lutik1710 [3]
3r+n2−r+5−2n+2<span />=3r+n2+−r+5+−2n+2=3r+n2+−r+5+−2n+2<span />=(n2)+(−2n)+(3r+−r)+(5+2)<span />=n2+−2n+2r+7<span /><span />
=n2−2n+2r+7
7 0
3 years ago
Read 2 more answers
What is the equation in standard form of the line that passes through the point (-7, 2) and has a
Orlov [11]

Answer:

y=3x+23 (lmk if you need me to explain)

Step-by-step explanation:

3 0
3 years ago
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