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Juliette [100K]
2 years ago
14

In a group of hats consisting of only blue hats, green hats, and purple hats, the ratio of blue hats to green hats to purple hat

s is 7:4:12. If there are a total of 92 hats in this group, how many of these hats are not blue
Mathematics
1 answer:
elena-s [515]2 years ago
8 0

Answer:64 hats

Step-by-step explanation:

Ratio of Blue hats= 7

Ratio of Green hats= 4

Ratio of purple hats= 12

Total ratio = 7+4+12 = 23

Total hats= 92 hats

To get number of hats.that are not blue, we add the ratio of green and purple together= 4+12= 16

Number of hats that are not blue will be:

16/23 × 92

= 16 × 4

= 64

64 hats are not blue.

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Mr=120 and ms=110 find mt
nata0808 [166]
Mr=120 Ms=110 and mt=100
3 0
2 years ago
Which measure is the largest? 1.2 km, 120,600 cm, 1,220,000 mm, 120 meters
Margarita [4]
The first thing you should know to answer this question is the following conversions:
 1Km = 1000m
 1m = 1000mm
 1Km = 1000000mm
 1m = 100cm
 By making the conversions to the same unit, we can know what measure is greater:
 1.2Km = 1200m
 120600cm = 1206.00m
 1220000mm = 1220m
 120m = 120m
 Answer
 The biggest measure is
 1220000mm = 1220m
6 0
2 years ago
Tarush is a landscape architect. For his first public project he is asked to create a small scale drawing of a garden to be plac
Lunna [17]

Answer:

See the attached figure 2.

Step-by-step explanation:

The question is as shown at the attached figure 1.

given: The garden is a right triangle with base 10 m and height 15 m.

We need to draw the garden such that 1 unit on the grid represents 2 m.

So the scale factor is 1 unit = 2 m

base = 10 m = 10/2 = 5 units

height = 15 m = 15/2 = 7.5 units

So, the garden on the grid will be a right triangle with base 5 units  and height 7.5 units.

See the attached figure.

3 0
1 year ago
Read 2 more answers
A random sample of 25 roundtrip flights between Philadelphia and Dallas has an average airfare of $393.50 with a sample standard
Sauron [17]

Answer:

$393.50+/-$19.72

= ( $373.78, $413.22)

Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = $393.50

Standard deviation r = $50.30

Number of samples n = 25

Confidence interval = 95%

z value(at 95% confidence) = 1.96

Substituting the values we have;

$393.50+/-1.96($50.30/√25)

$393.50+/-1.96($10.06)

$393.50+/-$19.7176

$393.50+/-$19.72

= ( $373.78, $413.22)

Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)

5 0
2 years ago
A length is measured as 21cm correct to 2 significant figures. what is the upper bound for the length?​
Leno4ka [110]

the upper bound for the length is  21.5  cm .

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

Lower and Upper Bounds

  • The lower bound is the smallest value that will round up to the approximate value.
  • The upper bound is the smallest value that will round up to the next approximate value.

Ex:- a mass of 70 kg, rounded to the nearest 10 kg, The upper bound is 75 kg, because 75 kg is the smallest mass that would round up to 80kg.

Here , A length is measured as 21cm correct to 2 significant figures. We need to find what is the upper bound for the length . let's find out:

As discussed above , upper bound for any number will be the smallest value in decimals which will round up to next integer value . So , for 21 :

⇒ 21.5  cm

21.5 cm on rounding off will give 22 cm . So , the upper bound for the length is  21.5  cm .

7 0
2 years ago
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