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mote1985 [20]
3 years ago
11

Leah babysits during the day for three dollars per hour and at night for five dollars per hour. If she worked five hours in our

$19, how many hours did she babysit during the day? How many at night?
Mathematics
2 answers:
Serggg [28]3 years ago
7 0
The answer is 4+3=7 percent of the answer is correct
Stells [14]3 years ago
5 0

Answer:

3d + 5n =19

3*3 + 5*2 = 19

9 + 10 = 19

Step-by-step explanation:

3d + 5n =19

3*3 + 5*2 = 19

9 + 10 = 19

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An exam worth 145 points contains 50 questions. The number of two-point questions is equal to 50 minus the number of five-point
abruzzese [7]

Answer:

Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

Step-by-step explanation:

i) let the number of 2 point question is x.

ii) let the number of 5 point questions be y

iii) total number of questions is 50

iv) therefore x + y = 50

v) it is also given that 2x + 5y = 145

vi) solving for the two equations found in iv) and v). Multiplying iv) by 2 we get

    2x + 2y = 100

vii) subtracting equation vi) from equation v) we get 3y = 45.

viii) Therefore y = 15.

ix) using the value in viii) and substituting in iv) we get x + 15 = 50.

    Therefore x = 50 - 15  = 35

x) Therefore there are 35 number of 2-point questions and 15 number of 5-point questions.

3 0
3 years ago
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Answer number one asap this is not a joke so please not random cmts thx will report if u do!
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1. The area of one face of the bar is
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The area of two sides of the bar is
.. side area = (50 mm +90 mm)*(3.5 mm) = 490 mm^2

Together, those areas cover half the bar, so the total paper required is
.. 2*(4500 mm^2 +490 mm^2) = 9980 mm^2 . . . . . . 3rd selection

2. The length of the central rectangle is
.. 8 ft + 6 ft + 10 ft = 24 ft
Its width is 7 ft, so its area is
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Then the total area of the prism is
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8 0
3 years ago
Solve for x. 2x + 5 = 3x -1
viktelen [127]

Answer:

x = 6

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

5 0
2 years ago
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How many meters in 25cm x8
sukhopar [10]
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3 years ago
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What is the mode of this set of data? 1982 1988 1989 1994 1995 2005
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All of the numbers are the mode, so it is
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