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Vaselesa [24]
3 years ago
11

HELP PLS!!!!!!!!!! you get 5 pointsssssss PLS I BEG QUICK!!!!!

Mathematics
2 answers:
STALIN [3.7K]3 years ago
7 0

Answer:

6.5 mph

Step-by-step explanation:

Pace per mile

09 : 13.85

min : sec

Speed

0.1083 miles per minute

=

6.5 miles per hour

ahrayia [7]3 years ago
3 0
The answer is 6.5 miles per hour
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What is the answer. plz heelp 5h+2(11-h)= -5
aliya0001 [1]

Answer:

h = -9

Step-by-step explanation:

5h+2(11-h)= -5

Distribute

5h +22 -2h = -5

Combine like terms

3h +22 = -5

Subtract 22 from each side

3h +22-22 = -5-22

3h = -27

Divide by 3

3h/3 = -27/3

h = -9

4 0
3 years ago
An employer wishes to compare typing speeds of graduates from 2 different study programs: A and B. Eight random graduates from c
Karolina [17]

Answer:

Calculated value t =  0.614< 1.782

we accepted null hypothesis for 12 degrees of freedom at 0.05 level of significance .

<u>Step-by-step explanation:</u>

<u>we will t-test </u> t = x⁻- y⁻ /S√ n₁+n₂-2

Given An employer wishes to compare typing speeds of graduates from 2 different study programs: A and B

course A type at 62, 85, 59, 64, 73, 70, 75, and 72

mean of x is x⁻ = ∑x / n

mean of x = 62+85+59+64+73+70+75+ 72 /8 = 70

x⁻ = 70

course B type at 75, 64, 81, 55, 69, and 58

mean of y is  y⁻ = ∑y / n = 75+64+81+55+69+ 58/6 = 67

y⁻ =67

course A    course B

    x                    y             x- x⁻     (x-x⁻ )^2     y- y⁻     (y-y⁻ )^2    

    62                75            8             64          8            64

    85                64           15            225       -3             9

    59                81           -11            121          14            196      

    64                55           -6            36          -12          144          

    73                69          3                9            2            4

    70               58            0              0           -9            81

    75                              5              25

    72                              2               4

                                            ∑( (x-x⁻ )^2= 484           ∑( (y-y⁻ )^2= 498

Adding ∑( (x-x⁻ )^2+ ∑( (y-y⁻ )^2= 982

n₁+n₂-2 = 8+6-2=12

now S^2 =  982/ 12 =81.833

<u>Null hypothesis :H₀:μ₁=μ₂ ( there is no difference between A and B)</u>

<u>Alternative hypothesis :H₁:μ₁≠μ₂</u>

<u>level of significance ∝=0.05</u>

<u>we will use t-test </u> t =   0.614 ( see attachment )

The degrees of freedom = n₁+n₂-2 = 8+6-2=12

From tabulated value  t = 1.782

Calculated value t = 0.614< 1.782

we accepted null hypothesis for 12 degrees of freedom at 0.05 level of significance .

There is no difference between Course A and Course B

Download docx
8 0
3 years ago
If 75% is £45 what is the full cost?
dimulka [17.4K]
ANSWER: 60

75/100 = 3/4

45 divided by 3 is 15
15 multiplied by 4 is 50 (=4/4 = 100%)
6 0
3 years ago
Write an equation that can be used to solve the following: The sum of a number, n, and a number 5 larger than it is 41.
navik [9.2K]

n + n + 5 = 41 (4) 5n + n + 1 = 41

<em>n and "5 larger than n" </em>

'5 larger than n' = equivalent to n + 5

We now have n + n + 5

The problem says 41, thus;

<em>n + n + 5 = 41</em>

4 0
3 years ago
Read 2 more answers
Does someone know tha answer??
e-lub [12.9K]

Answer:

either 5 or 6 months

Step-by-step explanation:

Tom   M    Jerry

500    1     125

475     2   175

450     3    225

425     4    275

400     5    325

375     6    375

3 0
3 years ago
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