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Flura [38]
3 years ago
7

Write an expression for the amount of money (in dollars) in n nickels

Mathematics
2 answers:
Viktor [21]3 years ago
8 0

Answer:

.5

Step-by-step explanation:

you got to blaah blahh

kupik [55]3 years ago
4 0

Answer:

m1.00 +n0.20

Step-by-step explanation:

20 times 5 equal one dollar

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Given the speeds of each runner below, determine who runs the fastest.
uranmaximum [27]

Answer:

Liz

Step-by-step explanation:

lets make all speeds ft/1sec

Ron 8ft/1sec

Liz 104ft/7sec : 104/7=

14.8571428571 ft/1 sec

Katie

1 mile = 5280ft

5280ft/526sec

5280/526=

10.0380228137ft/1 sec

Emily,

1 min= 60 sec

835ft/60 sec

835/60=

13.9166666667 ft/sec

now, lets order from least to greatest

R:8ft/1sec, K:10.0380228137ft/1 sec,

E:13.9166666667 ft/sec, L:14.8571428571 ft/1 sec

Liz's speed is fastest

4 0
3 years ago
An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 3ft long with a diameter of 2.2 ft . S
Contact [7]

4 minutes 34 seconds will takes to empty the tank, if the starts completely full and oil drained at a rate of 2.5 ft^{3} per minute.

Step-by-step explanation:

              The given is,

                         Tank is shaped like a cylinder that is 3 ft long with a diameter of 2.2 ft.

                          Oil drained at a rate of 2.5 ft^{3} per minute.

Step:1

       Time taken to dry the oil tank is,

                           T   = \frac{Volume of oil}{Oil drain rate}  ....................................(1)

Step:2

      Volume of the oil is,

                           V = \pi  r^{2} h.................................................(2)

      Where, r - Radius of Cylinder

                             r = \frac{d}{2}

                             r = \frac{2.2}{2}

                             r = 1.1 ft

      From eqn (1),

                        V =  \pi × 1.1^{2} × 3

                           = 11.40398 ft^{3}

Step:3

     From equation (1)

                           = \frac{11.40398}{2.5}

                           = 4.56

                           = 4.56 minutes

                      T  = 4 minutes 34 seconds

Result:

      Time taken to dry the oil tank is 4 minutes 34 seconds, if a cylinder is 3 ft long with a diameter of 2.2 ft and oil is drained at a rate of 2.5ft^3 per minute.

4 0
3 years ago
Which of the binomials below is a factor of this trinomial 4x^2-4x-120
tatyana61 [14]
<span>4x^2-4x-120
=4(x^2 - x - 30)
=4(x-6)(x+5)

answer
</span><span>B.x-6</span>
7 0
3 years ago
Read 2 more answers
Find the slope of the line perpendicular to the graph of y− 1/5 x=7<br><br> help due soon
Blababa [14]
<h2>Answer:</h2>

Step 1: We need to covert the current equation to <u><em>slope-intercept form*.</em></u>

<u><em></em></u>y - \frac{1}{5}x = 7\\\\y = \frac{1}{5}x + 7<u><em></em></u>

Step 2: Now that we have our equation in slope-intercept form, we can determine the perpendicular slope of the line.

\frac{1}{5} = \frac{5}{1} = 5 = -5

Our new slope is now <u><em>-5</em></u>.

*Slope-intercept form: <em>y = mx + b</em>

6 0
3 years ago
Multiply. Express your answer in standard form. Pleases be 100% honest with your response and ill Mark Brainliest. ​
allsm [11]
<h3><em>-2x (to the power of 4) + 10x (to the power of 3) - 21x (to the power of 2) +19x -4</em></h3><h3><em /></h3><h3><em>i didn’t know how to type the powers sorry!</em></h3>
4 0
3 years ago
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