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Katen [24]
3 years ago
12

9. Con 12 libros de diferentes autores, cuántas selecciones de 7 libros se pueden

Mathematics
1 answer:
nekit [7.7K]3 years ago
5 0
Answer is 14 because 3x4 is 12 +2 = 14
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Help me please thank you
TEA [102]

Answer:

about 41.14 pages per day

Step-by-step explanation:

She wants to read 576 pages in 14 days

Take the number of pages and divide by the number of days

576/14=41.14285714 pages per day


6 0
3 years ago
Read 2 more answers
The equations y = 30x + 10 and y = –x2 + 150x + 10 model the daily sales of two car models, where x represents the number of day
yuradex [85]

Answer:

  day 0, day 120

Step-by-step explanation:

You want to find the value of x that makes both y-values be the same:

  y = y

  30x +10 = -x^2 +150x +10

  x^2-120x = 0 . . . . subtract the right side of the equation

  x(x -120) = 0 . . . . . factor

Values of x that make this true are x=0 and x=120.

The same number of each car was sold on day 0 and day 120.

7 0
3 years ago
Amy raises $58.75 to participate in a walk a thon. Jeremy raises $23.250more than Amy. Oscar raises 3 times as much as Jeremy. H
stiv31 [10]
1. 58.75 + 23.25 = 82
2. 82*3 = 246

Oscar raised $246
3 0
3 years ago
Read 2 more answers
The measurement of the complement of an angle exceeds the measure of the angle by 25%. Find the measurement of the angle and its
tester [92]
Let the angles be A and C 

<span>Complimentary angles, therefor </span>
<span>A + C = 90 </span>

<span>The measurement of the complement of an angle exceeds the measure of the angle by 25% (you used a % sign so I'll use % instead of degrees) </span>
<span>C = 1.25A </span>

<span>Substitute </span>
<span>A + 1.25A = 90 </span>
<span>2.25A = 90 </span>
<span>A = 40º <----- </span>
<span>C = 50º <----- </span>
<span>------------------------------ </span>

<span>If you meant 25º </span>
<span>A + (A + 25) = 90 </span>
<span>2A + 25 = 90 </span>
<span>2A = 65 </span>
<span>A = 32.5º </span>
<span>C = 57.5º</span>
3 0
3 years ago
For the equation y+1=-3(x-5) the line contains the point (5,-1) and has a slope of?
Tems11 [23]

Answer:

-3

Step-by-step explanation:

complete operations and rearrange to y = mx + b format

y + 1 = -3(x-5)

y + 1 = -3x + 15

y = -3x + 14

slope is -3

5 0
3 years ago
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