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bekas [8.4K]
3 years ago
10

2. Ms. Lenz has these dollar bills. Count on

Mathematics
2 answers:
kiruha [24]3 years ago
6 0

Answer:

Total value = $37

Step-by-step explanation:

Total value = ?

Count all dollar bills = $5 +$20 + $10 + $1 + $1

                                 = $37

Sphinxa [80]3 years ago
5 0

Answer:

$5 dollars

Step-by-step explanation:

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15x – 2(4x + 1) = -9
Oksi-84 [34.3K]

Answer:

-1

Step-by-step explanation:

15x-8x-2=-9

Or, 7x=-9+2

Or, 7x=-7

Or, x=-7/7

Or, x =-1

6 0
3 years ago
Read 2 more answers
An oil tank is leaking into a lake at a rate of 0.1 m3/day. The oil slick forms a semicircular disk whose center is at the leak
gregori [183]

Answer:

17.9  m/s

Step-by-step explanation:

Volume of the slick =  0.5 x π r² h--------------------------------- (1)

Where r = radius of slick

           h = thickness of slick, 10⁻⁶m

If 0.5m³ of oil leaked, then the radius of the semicircular slick can be calculated from equation (1)

V  =  0.5 x π r² h

0.5=  0.5 x  π x  r² x 10⁻⁶

r²   =  10⁶/ π

r =     10³/√π

dV/dt =   πrh dr/dt  + 0.5π r² dh/dt----------------------------------- (2)

Asumming the film thickness is constant , equation (2) becomes

dV/dt =   πrh dr/dt-------------------------------- (3)

dV/dt = 0.1m³/day

r=  10³/√π

dr/dt= rate of expansion of the slick

Substituting  into (3);

0.1 =  π x 10³/√π x 10⁻⁶ x dr/dt

dr/dt = 0.1  x 10⁶/ ( π x 10³/√π)

       =  17.9479 m/s

       ≅  17.9  m/s

8 0
3 years ago
The table show whether a bus pass is a child’s or adult’s pass and whether it is a daily or monthly pass
PolarNik [594]

Answer:

50.8%

Step-by-step explanation:

That is the one my friend and I chose. It is 31/61 when all the stuff is added together and that is put to 50.8 as a percentage..

3 0
3 years ago
Select all the expressions that will represent a rational number, without simplifying.
Afina-wow [57]

ANSWER:

Use math websites

5 0
3 years ago
What is the surface area of a sphere that has a radius of 5 units? Use 3.14 for π.
lozanna [386]
A≈314.16 have a good day :)
8 0
3 years ago
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