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IrinaVladis [17]
3 years ago
11

PLEASE HELP ASAP!!

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0

Answer:

Question 1:  radius is 457.1

Question 2:  slope is 0.2

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Convert 50 degrees F to K.
butalik [34]

Answer:

50 °= 283.15 K

Step-by-step explanation:

4 0
3 years ago
If log2 5 = a, log2 3 = b and log2 7 = c, determine an expression for log2 (25/21) in terms of a, b, and c
Ilia_Sergeevich [38]

Answer:

2a - b -c

Step-by-step explanation: We know that:

log_{2} 5 = a\\log_{2} 3 = b\\log_2 7 = c\\

and we want:

log_2 \frac{25}{21}.

We can form the numerator using just the first fact (since 5^2 is 25) and the denominator using the latter two (since 3*7 = 21).

log_2 \frac{25}{21} = log_2 \frac{5^2}{3*7}.

The logarithm of a division can be expanded by subtracting the numerator and denominator (while still keeping the log). The logarithm of a product can be expanded by adding the terms while keeping the log. If the logarithm is raised to a power, we can bring it down as a factor:

log_2 \frac{5^2}{3*7} = log_2(5)^2 - log_2 (3*7) = 2 log_2(5) - (log_2 3 + log_2 7)

= 2 log_2(5) - log_2 3 - log_2 7 .

Substituting the variables:

2 log_2(5) - log_2 3 - log_2 7 = 2a - b - c

8 0
3 years ago
2. The registration at a preschool is $125. Then,
denis23 [38]

The equation of the total cost is y = 475 x + 125, where y is the total cost for x months

a) The rate of change is $475 per month

b) The initial value is $125

c) The independent variable is the number of months (x)

d) The dependent variable is the total cost after each month (y)

Step-by-step explanation:

The given is:

  • The registration at a preschool is $125
  • The parents must also pay $475 per month for  tuition

Assume that the total cost is y for x months

∵ The registration fee = $125 ⇒ paid once

∵  The parents pay $475 per month for  tuition

∵ The number of months is x

∴ The total cost y = 475 x + 125

The equation of the total cost is y = 475 x + 125, where y is the total cost for x months

∵ y = 475 x + 125 is in the form of the linear equation y = m x + b,

  m is the slope of the line and b is the y-intercept

∵ The slope of the line m is the rate of change y with respect to x

∴ m = 475

∴ The rate of change is $475 per month

a) The rate of change is $475 per month

∵ b is the initial value of y at x = 0

∴ b = 125

∴ The initial value is $125

b) The initial value is $125

∵ The independent variable is x

∴ The independent variable is the number of months (x)

c) The independent variable is the number of months (x)

∵ The dependent variable is y

∴ The dependent variable is the total cost after each month (y)

d) The dependent variable is the total cost after each month (y)

Learn more:

You can learn more about the word problem in brainly.com/question/5059091

#LearnwithBrainly

5 0
4 years ago
Pls help<br> Enter the equation for the graph.
prisoha [69]

Answer:

y=[1]cos([\frac{2\pi }{3}]x)

Step-by-step explanation:

Looking at the graph, we can see the domain to be from (0 , 2π).

Now we have to find one period that corresponds to cos(x).

The half-period of cos(x) for this graph appears to be pi/3 and adding another pi/3 gets us 2pi/3 to be our cosine period.

b = 2pi/3

a is the same range as cos(x). Range: (0,0)

y = [a] * cos ([b]*x)

y = [1] * cos([2pi/3]x)

4 0
2 years ago
How many triangles equal 360 degrees
agasfer [191]
A triangle is 180 So I believe it'd be two. 
8 0
4 years ago
Read 2 more answers
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