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liubo4ka [24]
2 years ago
14

A cell phone company charges a flat rate of

Mathematics
1 answer:
liraira [26]2 years ago
6 0

Answer:

465 minutes or 8 hours and 15 minutes

Step-by-step explanation:

her monthly bill was 72.25 and she has to pay 2.50 per month

72.25 - 2.50 = 69.75

69.75/ 0.15 = 645 minutes

645 minutes/ 60 minutes= 7.75 = 8 hours 15 minutes

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A periscope is 5 feet above the surface of the ocean. Through it can be seen a ship that rises to 50 feet above the water. To th
yanalaym [24]

The farthest distance on the planet that the eye can see is given by the formula d=\sqrt{8,000h_1} + \sqrt{8,000h_2}

h_1= your first height and h_2=your second height

Since h_1=5 or the height of the periscope over the water and h_2=50 for the height of the ship the answer is 832.45553203368 feet, but because the question asks to the nearest mile the answer would be 11^a^0

If you get it wrong just tell me and I will rework my math again :-)

5 0
2 years ago
Trevor is training for a race he swims 1/2 lap in 4/5 minute at that race how many minutes does it take for Trevor to swim each
Korvikt [17]
8/5 minutes. Is the answer
7 0
2 years ago
The batting Wang Xiu Ying uses to fill quilts has a thermal conductivity rate of 0.030.030, point, 03 watts (\text{W})(W)left pa
alexgriva [62]

Answer:

0.0003W/cm°C

Step-by-step explanation:

The question is not properly written. Here is the correct question.

The batting wang xiu ying uses to fill quilts has a thermal conductivity rate of 0.03 watts (W) per meter(m) per degree celsius. what is the batting thermal conductivity when w/cm•c

Given the thermal conductivity in W/m°C to be 0.03W/m°C

We are to rewrite the value in W/cm°C

The difference is the unit. The only thing we need to do is to simply convert the unit (metres) in W/m°C to centimeters (cm)

Since 100cm = 1m, 0.03W/m°C can be expressed as shown below;

= 0.03W/m°C

= 0.03 × W/1m×°C

Note that 1m = 100cm, substituting this conversion into the expression, it will become;

= 0.03 × W/100cm × °C

= 0.03/100 × W/cm°C

= 0.0003W/cm°C

Hence the battling thermal conductivity in W/cm°C is 0.0003W/cm°C

4 0
2 years ago
The vertices of ΔRST are R(–1,–1), S(–1,11) and T(4,11). Which could be the side lengths of a triangle that is similar but not c
Step2247 [10]
The side lengths could be 10, 24 and 26 units.

We must first find the side lengths.  We use the distance formula to do this.

For RT:
d=\sqrt{(11--1)^2+(-1--1)^2}
\\=\sqrt{(11+1)^2+(-1+1)^2}
\\=\sqrt{12^2+0^2}=\sqrt{144}=12

For ST:
d=\sqrt{(11-11)^2+(4--1)^2}
\\=\sqrt{0^2+(4+1)^2}=\sqrt{5^2}=\sqrt{25}=5

For TR:
d=\sqrt{(11--1)^2+(4--1)^2}
\\=\sqrt{(11+1)^2+(4+1)^2}=\sqrt{12^2+5^2}=\sqrt{144+25}=\sqrt{169}=13

Our side lengths, from least to greatest, are 5, 12 and 13.

To be similar but not congruent, the side lengths must have the same ratio between corresponding sides but not be the same length.  10, 24 and 26 are all 2x the original side lengths, so this works.
5 0
2 years ago
Given the circle with the equation (x - 3)2 + y2 = 49, determine the location of each point with respect to the graph of the cir
blsea [12.9K]
Hello :
 <span>an equation of the circle Center at the w(a,b) and ridus : r is :
(x-a)² +(y-b)² = r²  
In this exercice : (x-3)²+y²=7²   ....a =3 and b=0 ( the center is :w(3,0))  ...    r=7
The distance between each point in each case is calculated and compared with the length of the radius
 1 ) </span>A (-1, 1) :  Aw² = (-1-3)²+1² =17.....  Aw < r : <span>interior the circle
</span>  2 )  B(10, 0) :Bw² =(10-3)²+0² =49 ......r = Bw :<span>circumference of the circle
</span> 3 )  C(4, -8) :Cw² = (4-3)²+(-8)² =65..... Cw > r  : exterior  the circle
5 0
2 years ago
Read 2 more answers
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