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Aleks04 [339]
4 years ago
10

Convert 0.00049 to scientific notation. 4.9 ⋅ 103 4.9 ⋅ 104 4.9 ⋅ 10−3 4.9 ⋅ 10−4

Mathematics
1 answer:
Iteru [2.4K]4 years ago
3 0

Answer:

4.9×10⁴

Step-by-step explanation:

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by drawing two straight lines divide the face of the clock into three regions such that the numbers in each regions have the sam
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10 + 9 + 3 + 4

8 + 7 + 6 + 5

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3 years ago
Two mechanics worked on a car. The first mechanic charged $55 per hour, and the second charged $45 per hour. The mechanics worke
lesya [120]

Answer:

A worked 20 hours and B worked 15 hours.

Step-by-step explanation:

Given:

Mechanic A hourly rate = $55

Mechanic B hourly rate = $45

Total charged = $1775

Let's assume Mechanic A worked 'A' amount of hours and Mechanic B worked 'B' amount of hours, then

Step 1:

First equation: A + B = 35

Second equation: 55xA + 45xB = 1775

Step 2:

First equation can be written as: A = 35 - B

Step 3: Replace value of A in second equation

Second equation: 55x(35-B) + 45B = 1775

                            : 1925 - 55B + 45B = 1775

                            : (1925 - 1775 )/10 = B

                            : B = 15 hours

A worked = 35 - 15

                = 20 hours

8 0
3 years ago
30<br> 45<br> 60<br> Which is it? <br> Help please
blagie [28]

Answer:

D = 90°

Step-by-step explanation:

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3 0
3 years ago
What is the positive solution to the equation 0 = -x2 + 2x + 1?
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Answer:

there is no solution

Step-by-step explanation:

1st switch sides: -x2+2x+1=0

2nd add similar elements: -2x + 2x = 0

1 = 0

Thus, this equation has no solution

hope i helped :)

5 0
4 years ago
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mihalych1998 [28]
12,6
10,5
Im not 100% sure if its right but thata the answer i get
8 0
4 years ago
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