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3 years ago

#7 with that triangle

Mathematics

1 answer:

Lisa [10]3 years ago

7 0

DE equals 7.5 centimeters. You divide 5 by 2, line CA by CB, and get 2.5 which is the zoom factor. Then multiply 3 by 2.5 to get DE.

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Greg used 1 inch tiles to help make a ruler what mistake did he make

9966 [12]

Answer: he didn't make a mistake?

Step-by-step explanation:

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3 years ago

The plan of a park is at a scale of 1:5000. Calculate the actual distance between two points if the distance between two points

andreyandreev [35.5K]

Multiple each of those by 5000, getting 35000, 14000, and 10000

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3 years ago

Help asap show work

katovenus [111]

Answer: see below

Step-by-step explanation:

17) 5n - 3 > -2n + 4 and 9 - 4n ≥ -2n + 1

+2n +2n +2n +2n

7n - 3 > 4 9 - 2n ≥ 1

+3 +3 -9 -9

7n > 7 -2n ≥ -8

÷7 ÷7 ÷ -2 ↓ ÷ -2

n > 1 and n ≤ 4

Graph: o----------------- ·

1 4

18) 9k - 2 ≤ 9 + 10k < 9 - 4k

9k - 2 ≤ 9 + 10k and 9 + 10k < 9 - 4k

-10k -10k +4k +4k

-k - 2 ≤ 9 9 + 14k < 9

+2 +2 -9 -9

-k ≤ 11 14k < 0

÷ -1 ↓ ÷ -1 ÷14 ÷14

k ≥ -11 and k < 0

Graph: · -----------------o

-11 0

19) 4 - n ≤ 10 + 5n ≤ 6n + 1

4 - n ≤ 10 + 5n and 10 + 5n ≤ 6n + 1

-5n -5n -6n -6n

4 - 6n ≤ 10 10 - n ≤ 1

-4 -4 -10 -10

-6n ≤ 6 -n ≤ -9

÷ -6 ↓ ÷ -6 ÷ -1 ↓ ÷ -1

n ≥ -1 and n ≥ 9

Graph: · -----------------→

-9

20) 4p - 5 ≤ 2p + 9 ≤ 4p + 7

4p - 5 ≤ 2p + 9 and 2p + 9 ≤ 4p + 7

-2p -2p -4p -4p

2p - 5 ≤ 9 -2p + 9 ≤ 7

+5 +5 -9 -9

2p ≤ 14 -2p ≤ -2

÷ 2 ÷ 2 ÷ -2 ↓ ÷ -2

p ≤ 7 and p ≥ 1

Graph: · ----------------- ·

1 7

6 0

3 years ago

According to the histogram of travel times to work from the US 2000 census (Page 6 of "Journey to Work: 2000"), roughly what per

erastovalidia [21]

Histograms are used to represent data, where the length of each bar represents the frequency of the data element

The histogram is not given; So, I will give a general explanation.

Assume that the number of commuters that travel more than 45 minutes is 450, while the total number of commuters surveyed is 500.

The percentage of commuters that travel more than 45 minutes is the quotient of the commuters that travel more than 45 minutes and the total number of surveyed commuters.

So, we have:

$\%Percentage = \frac{450}{500}$

Divide 450 by 500

$\%Percentage = 0.9$

Express as percentage

$\%Percentage = 90\%$

Hence, the percentage of commuters that travel more than 45 minutes is 90%