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elena-s [515]
3 years ago
5

How many significant figures are in this number? 43.55

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
6 0

Answer:

Step-by-step explanation:

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- x(x + 7 (x - 5)<br> Graph this
Inessa05 [86]

Answer:

=−8x2+35x

Step-by-step explanation:

multiply first

3 0
2 years ago
Karen make $5 per hour babysitting and $12 per hour giving music lessons. On the weekend, she worked a total of 18 hours and mad
Lilit [14]

Answer:

11 hours

Step-by-step explanation:

Let's say Karen makes x hours babysitting and y hours giving music lessons.

Because she worked a total of 18 hours, we know that x + y = 18.

5 * x is how much money she earns babysitting for x hours, while 12 * y is how much money she earns giving music lessons for y hours. Adding them up gives her total revenue:

5x + 12y = 139

We now have a system of equations. Let's multiply both sides of x + y = 18 by 12:

12 * (x + y) = 18 * 12

12x + 12y = 216

Now, subtract 5x + 12y = 139 from 12x + 12y = 216:

     12x + 12y = 216

-     5x + 12y = 139

_________________

       7x + 0y = 77

Divide both sides by 7:

x = 11

Thus, Karen spent 11 hours babysitting.

4 0
3 years ago
What is 3 2/5 times 2 1/3
Serjik [45]
3 \frac{2}{5}  \cdot2  \frac{1}{3} = \frac{3\cdot5+2}{5} \cdot \frac{2\cdot3+1}{3} = \frac{17}{5} \cdot \frac{7}{3} = \frac{17\cdot7}{5\cdot3} = \frac{119}{15} =7 \frac{14}{15}
7 0
3 years ago
Read 2 more answers
A wheel has a radious of 50cm. How many times would the wheel go around if it rolled for 10km
Zinaida [17]
First you must make sure all measurements are in the same value: You can choose either cm or km

Distance = 1,000,000 cm or 10 km

Radius = 50 cm or 0.0005 km

Distance/(2πR)

1,000,000/(2π*50)

1,000,000/314.059…….

Approx = 3183.1 Rotations
6 0
2 years ago
A number cube has sides numbered 1though 6 the probability of rolling a 2 is
sammy [17]
This is 1/2)2=1/4 hope this helps
7 0
3 years ago
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