3 years ago

Please help I’m in the middle of a testtt!

Mathematics

1 answer:

hichkok12 [17]3 years ago

5 0

Answer:

first option

Step-by-step explanation:

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A map has a scale of 1:25 000.How many kilometres in actual distance is represented by the length 6.8cm on a map?solution

Ghella [55]

Answer:

$= 1.7km$

Step-by-step explanation:

$1 : 25000 \\ 1cm = > 25000cm \\ 6.8cm = > 25000 \times 6.8 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 170000cm \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 1700m \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = > 1.7km$

hope this helps you.

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3 years ago

Find the exact length of the third side.

frez [133]

Step-by-step explanation:

Hello there!

Use the Pythagoream theorem:

$a^{2} +b^{2} =c^{2} \\4^2+2^2=c^2\\16+4=20\\x=\sqrt{20} \\x=4.472135$

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3 years ago

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Which expression is a difference of two terms that is equivalent to -6z + 13?

Anna71 [15]

Answer: D

Step-by-step explanation:

(5z + 15) - (11z + 2)

= (5z-11z) +(15-2)

= -6z+13

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3 years ago

A man purchased an item for 4,400 that was marked up by 10%. what was the original price

r-ruslan [8.4K]

I think the awkward science is quite amusing to me

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3 years ago

Bill and Joe leave their house at the same time heading in opposite directions. If Bill is driving three times faster than Joe a

Arisa [49]

The problem statement gives you the relationship between their speeds, and it gives you information you can use to find their total speed. You solve this by finding the total speed, then the proportion of that belonging to Bill.

The total speed is (120 mi)/(3 h) = 40 mi/h.

The speed ratio is ...

... Bill : Joe = 3 : 1

so the speed ratio Bill : Total is ...

... 3 : (3+1) = 3:4.

Bill's speed is (3/4)×(40 mi/h) = 30 mi/h.

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4 years ago