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ANEK [815]
3 years ago
11

What is the radius of a circle whose equation is x2 + (y – 8)2 = 25?

Mathematics
1 answer:
Nesterboy [21]3 years ago
6 0
The formula for a circle is (x - h)^2 + (y - k)^2 = r^2
Where (h, k) is the center and r is the radius.
x^2 + (y - 8)^2 = 25
25 = r^2
So the radius is sqrt 25 or 5.
Radius = 5
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Dave wants to buy a bike for $180. He has $40. Dave mows lawns for $10 per lawn.
LenaWriter [7]

Answer:

180 = 40 + 10x

Step-by-step explanation:

5 0
2 years ago
9. The results of a random survey is displayed in the histogram as shown.
natali 33 [55]

The number of people in the sample survey is 75.

Survey sampling, as used in statistics, is the process of choosing a sample of constituents from a target population to perform a survey. The word "survey" can be used to describe a wide range of observational methods or procedures. Most frequently, a questionnaire meant to assess people's traits and/or opinions is employed in survey sampling. The topic of survey data collecting involves various methods of contacting sample participants after they have been chosen. Sampling is done to cut down on the expense and/or labor required to survey the complete target population. A census is a survey that includes all members of the target population. A sample is a subset or segment of a population from which data will be drawn.

The sample survey has

5 people in 1-4 miles per week

10 people in 5-8 miles per week

15 people in 9-12 miles per week

20 people in 13-15 miles per week

25 people in 16-19 miles per week

The number of people in the sample survey is

5 + 10 + 15 + 20 + 25

=5(1 + 2 + 3 + 4 + 5)

=5(15)

=75

Hence, the number of people in the sample survey is 75.

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7 0
2 years ago
Find the Geometric mean x of 5 and 20
Ugo [173]
Geometric mean =x=<span>√(5 × 20) 
                               =</span>√100
                               =10
8 0
3 years ago
If g(x)=25 and h(x) = 4 – X, what is the value of (g•h)(-3)?
madam [21]

Answer:

175

Step-by-step explanation:

(g*h)(x) is the product of two functions:  g(x) = 25 and h(x) = 4 - x.

This product is equal to 100 - 25x.

Substituting -3 for x, we get

(g•h)(-3) = 100 - 25(-3) = 175

5 0
3 years ago
Simplify the absolute value -7-1??
stich3 [128]
Absolute value is a positive number
So -7-1 = -6
Answer 6
4 0
2 years ago
Read 2 more answers
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