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yKpoI14uk [10]
3 years ago
14

Samuel can type nearly 40 words per minute how many hours would take to type 2.5x10.5 words

Mathematics
1 answer:
pav-90 [236]3 years ago
7 0
<span>It will take him 108 hours and 20 minutes</span>
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If c varies directly as (r + 1) and c = 8, when r= 3, calculate the value of r when c= 20.
Aneli [31]

Answer:

r = 9

Step-by-step explanation:

Given that c varies directly as (r + 1) then the equation relating them is

c = k(r + 1) ← k is the constant of variation

To find k use the condition c = 8 when r = 3, then

8 = k(3 + 1) = 4k ( divide both sides by 4 )

2 = k

c = 2(r + 1) ← equation of variation

When c = 20, then

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10 = r + 1 ( subtract 1 from both sides )

9 = r

5 0
3 years ago
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Please help me with this question I will give brainliest.
Ainat [17]

Answer:

All you need to remember is the rules

Step-by-step explanation:

Let us remember

a to the m power x a to the nth power is = a to the m+n power. (add the exponents)

And

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6 0
3 years ago
here are some numbers: 8, 11, 13, 18, 25, 37 8, 13 , 18 is an arithmetic progression and the rule is to add 5 use three of the n
Yuliya22 [10]

Answer:

Progression: 11, 18, 25

Rule: Add 7

Step-by-step explanation:

Given

List of numbers: 8, 11, 13, 18, 25, 37

Sample Progression: 8, 13, 18; with common difference of 5

Required

Form a different progression using any three listed numbers

To solve this; we'll make use of trial and error methods;

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To start with;

Select ->11

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3 years ago
Write your answer in simplest radical form​
Varvara68 [4.7K]

Answer:

n = 8√2

Step-by-step explanation:

It's a 30-60-90 triangle, so n = 2×4√6/√3 = 8√2

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2 years ago
Which table describes the behavior of the graph of f(x) = 2x³ - 26x - 24?
Anna71 [15]
After you have plotted the graph of the polynomial, the x-intercepts of the given polynomial will be:
(-3,0),(-1,0) and (4,0)
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(-∞,-3)-below, (-3,-1)-above,(-1,4)-below,(4,∞)-above
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3 years ago
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