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3 years ago

On a map, 90 miles is represented by 3 inches.

Mathematics

2 answers:

victus00 [196]3 years ago

8 0

Answer:

15 miles

Step-by-step explanation:

Im not exactly sure how he got 250.. But its 15.

30/30/30 = 90

So half a inch, which is 30 would be 15, So your answer is 15.

jarptica [38.1K]3 years ago

4 0

If the ratio is 90:3 and there are 4 groups of 3 in 12, then the ratio would then be 450:12, leaving you with 450 as the answer. Hope I helped

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What is the value of x, when x2 + 5 = 21?

djverab [1.8K]

Hey there!

$\bold{x^2+5=21}$
Firstly, subtract by the number $\bold{5}$ on each of your sides
$\bold{x^2+5-5=21-5}$
$\bold{Cancel:5-5}$ because it gives us the result of $\bold{1}$
$\bold{Keep:21-5}$ because it equals: $\bold{16}$
$\bold{x^2=16}$
Nextly, we have to take our square root
$\bold{x=}$ ± $\bold{\sqrt{16}}$
Solve the square root and you have found your answer
$\boxed{\boxed{\bold{Answer:x=4[or]x=-4}}}$ $\bold{\checkmark}$

Good luck on your assignment and enjoy your day!

~ $\bold{LoveYourselfFirst:)}$

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3 years ago

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Step-by-step explanation:

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2 years ago

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In a shipment of onions , 12% are damaged. 1114 onions are undamage. find the total number of onions in the shipment

katrin2010 [14]

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3 years ago

Mr. Williams can grade 50 essays in 7 hours. His assistant, Mr. Wilfred, can do the same job in 14 hours. His other assistant, M

Elza [17]

Answer:

13.44 or 13 11/25 hours

Step-by-step explanation:

First use this format: number of essays/hours

- they are asking if all three work together, how many hours would it take, so this means addition:

50/7 + 50/14 + 25/6 = 200/x

Second, solve:

- least common multiple: 42

300/42 + 150/42 + 175/6 = 200/x

625/42 = 200/x

- cross-multiply

625x = 8,400

x = 336/25 = 13 11/25 = 13.44 (any one of these answers would work)

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2 years ago

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