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Sauron [17]
2 years ago
11

A local newspaper did a survey asking people of different ages how many hours they spend using social media sites each week. The

results of the survey and the least squares regression line are displayed in the graph. Use the least squares regression line to predict about how many hours a 40-year-old person spends on social media sites each week.
Mathematics
1 answer:
FrozenT [24]2 years ago
5 0

Answer:

Step-by-step explanation:

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I am greater than 54 fewer tens than 90?
Lubov Fominskaja [6]
In all cases, we will let x represent the number.
1) 54 tens = 540
90 - 540 = -450
x > -450

2) x < 36 and x > 24
24 < x < 36

3) 8 tens and 5 ones = 80 + 5 = 85
x > 85

4) x > 27
x < 33
And the value in the ones place is less than the value in the tens place, so
30 ≤ x ≤ 32
6 0
2 years ago
Suppose we fit a regression line to predict the number of incidents of skin cancer per 1,000 people from the number of sunny day
Jet001 [13]

Answer: The incidence of skin cancer (melanoma) has been underestimated.

Step-by-step explanation: The frequency of melanoma is more than 20 times higher in whites than in black Americans. In general, the risk of melanoma in the course of life is approximately 2.6% (1 in 38) for whites, 0.1% (1 in 1.000) for black people and 0.58% (1 in 172) for Hispanics. the risk for each person can be affected by a different number of factors.

6 0
3 years ago
What is 18/42 in simpist form?
Artemon [7]

Answer:

3/7

Step-by-step explanation:

18/42=9/21=3/7 answer

5 0
2 years ago
Read 2 more answers
How do you write 18 tens in standard form
Liula [17]
1800 because the 18 cant fit in the tens
7 0
3 years ago
How to reduce a ratio to lowest terms
aleksley [76]

It is usual to represent ratios in their simplest form so that we are not operating with large numbers. Reducing ratios to their simplest form is directly linked to equivalent fractions.

For example: On a farm there are 4 Bulls and 200 Cows. Write this as a ratio in its simplest form.

Bulls <span>: </span>Cows

4 <span>: </span>200

If we halve the number of bulls then we must halve the number of cows so that the relationship between the bulls and cows stays constant. This gives us:

Bulls <span>: </span>Cows

2 <span>: </span>100

Halving again gives us

1 <span>: </span>50

So the ratio of Bulls to Cows equals 1 : 50. The ratio is now represented in its simplest form.

An example where we have 3 quantities.

On the farm there are 24 ducks, 36 geese and 48 hens.

Ratio of ducks <span>: </span>geese <span>: </span>hens

24 <span>: </span>36 <span>: </span>48

Dividing each quantity by 12 gives us

2 <span>: </span>3 : 4

So the ratio of ducks to geese to hens equals 2 : 3 : 4 which is the simplest form since we can find no further common factor.

7 0
3 years ago
Read 2 more answers
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