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Anna71 [15]
2 years ago
8

Help pleased now can you help me

Mathematics
1 answer:
IrinaVladis [17]2 years ago
4 0

It drains at a constant rate using the first line find the rate per hour:

-3.5/2 = -1.75 per hour

Now to find the missing totals multiply the hours by the rate:

-1.75 x 9 = -15.75

-1.75 x 23 = -40.25

Now to find the change between the two times subtract:

-40.25 - -15.75 = -24.50

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Frank buys a 5 pound family pack
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Answer:

5×4/3=20/3=6.666

Ans 6

3 0
2 years ago
Cans of lemonade and packets of crisps were bought for the school disco in the ratio 3:2. The organiser bought 120 cans of lemon
koban [17]
120 dived by 3 multiplied by 2 is equal to 80 packs of crisps 
4 0
3 years ago
The data show the traveler spend- ing in billions of dollars for a recent year for a sample of the states. Find the range, varia
Svetllana [295]

Solution :

Given data :

20.1     33.5     21.7      58.4     23.2     110.8     30.9

24.0    74.8     60.0

n = 10

Range : Arranging from lowest to highest.

20.1,   21.7,   23.2,    24.0,   30.9,    33.5,    58.4,    60.0,    74.8,   110.8

Range = low highest value - lowest value

           = 110.8 - 20.1

           = 90.7

Mean = $\frac{\sum x}{n}$

         $=\frac{20.1+21.7+23.2+24.0+30.9+33.5+58.4+60.0+74.8+110.8}{10}$

          $=\frac{457.4}{10}$

         $=45.74$

Sample standard deviation :

$S=\sqrt{\frac{1}{n-1}\sum(x-\mu)^2}$

$S=\sqrt{\frac{1}{10-1}(20.1-45.74)^2+(21.7-45.74)^2+(23.2-45.74)^2+(24.0-45.74)^2+(30.9-45)^2}$  

      \sqrt{(33.5-45.74)^2+(58.4-45.74)^2+(60.0-45.74)^2+(74.8-45.74)^2+(110.8-45.74)^2}

$S=\sqrt{\frac{1}{9}(657.4+577.9+508.0+472.6+220.2+149.8+160.2+203.3+844.4+4232.8)}$$S=\sqrt{\frac{1}{9}(8026.96)}$

$S=\sqrt{891.88}$

S = 29.8644

Variance = S^2

               =(29.8644)^2

               = 891.8823

6 0
2 years ago
Absolute value of -6.2 is _________.<br> 1. 6.2<br> 2. 6<br> 3. 7<br> 4. -6
s2008m [1.1K]
<h2>SOLVING</h2>

\Large\maltese\underline{\textsf{A. What is Asked}}

What is the absolute value of -6.2? It's _____________.

\Large\maltese\underline{\textsf{B. This problem has been solved!}}

No matter what the number is, its absolute value is <u>always</u> <u>positive.</u>

The number -6.2 is not an exception, there's nothing special about that number. Its absolute value is also positive.

\cline{1-2}

\bf{Result:}

              \bf{=6.2}

\LARGE\boxed{\bf{aesthetic \not1 \theta l}}

5 0
1 year ago
Can someone solve this for me!?? please your help is needed!!
leonid [27]
It’s the third option
3 0
2 years ago
Read 2 more answers
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