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Naddik [55]
2 years ago
15

A total of

Mathematics
1 answer:
Temka [501]2 years ago
5 0
The answer will be 141 adults
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The area of the region under the curve of the function f(x) = 5x + 7 on the interval [1, b] is 88 square units, where b > 1.
djverab [1.8K]
We are given the area of the region under the curve of the function f(x) = 5x + 7 with an interval [1, b] which is 88 square units where b > 1 

We need to find the integral of the function f(x) = 5x + 7 with the limits 1 and b 

5/2 x^2 + 7x (limits: 1, b)

substitute the limits:

5/2 (1^2) + 7 (1) - 5/2 b^2 + 7b = 0

solve for b

Then after solving for b, this would be your interval input with 1: [1, b].<span />
4 0
2 years ago
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Solve<br>0.9(7x + 14) = 1.5 - (x + 2)
Triss [41]

\\ \sf\longmapsto 0.9(7x+14)=1.5-(x+2)

\\ \sf\longmapsto 6.3x+12.6=1.5-x-2

\\ \sf\longmapsto 63x+12.6=-x-0.5

\\ \sf\longmapsto 63x+x=-0.5-12.6

\\ \sf\longmapsto 64x=-13.1

\\ \sf\longmapsto x=\dfrac{-13.1}{64}

\\ \sf\longmapsto x=0.2

7 0
3 years ago
3x + y = 19 , and x + 3y = 1. Find the value of 2x + 2y
soldi70 [24.7K]
3x+y=19 \\&#10;x+3y=1 \\ \\&#10;\hbox{add the sides of the equations:} \\&#10;3x+x+y+3y=19+1 \\&#10;4x+4y=20 \\ \\ \hbox{divide both sides by 2:} \\&#10;2x+2y=10

The answer is d. 10.
6 0
3 years ago
Select the correct answer. In the figure, a pair of parallel lines is cut by a transversal. What kind of angle are angles A and
ankoles [38]

The answer is A. corresponding angles

7 0
3 years ago
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Find the missing value. Show your work<br> (GEOMETRY, PLEASE HELP!!)
sammy [17]
Sin51=y/12

y=12sin51 units

y≈9.33 units (to nearest hundredth of a unit)

...

tanα=12/5

α=arctan2.4°

α≈67.38°  (to nearest hundredth of a degree)

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tan13=x/24

x=24tan13 units

x≈5.54 units (to nearest hundredth of a unit)

...

sin20=10/x

x=10/sin20 units

x≈29.24 units (to nearest hundredth of a unit)
3 0
2 years ago
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