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3 years ago

How did the temperature change if: at first it decreased by 10 % and then decreased by 30% ?

Mathematics

2 answers:

MAVERICK [17]3 years ago

8 0

Answer:

Decreased by 40%!

Step-by-step explanation:

At first it goes down by 10%, then 30%, so you just add them together and get decreased by 40%.

NARA [144]3 years ago

4 0

Answer: -37%

Step by Step Sol: 100=x

10% of 100 equals 10

100-10 = 90

30% of 90 equals 27

90-27 = 63

63-100 equals -37

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Use the prime decomposition of integers to express the listed radical in its minimal expression. Do not use decimals.

kirza4 [7]

Answer:

(A) $210\sqrt{5$

(B) $210\sqrt{14}$

(D) $37\sqrt{5}$

Step-by-step explanation:

$\sqrt{220500} = \sqrt{2^2*3^2*5^2*7^2*5} = 2*3*5*7\sqrt{5} =210\sqrt{5$

$3\sqrt{68600} = \sqrt{2^2*2*5^2*7^2*7} = 3*2*5*7\sqrt{14} =210\sqrt{14}$

$3\sqrt{3267}\sqrt{4400} = 3\sqrt{3^2*3*11^2}\sqrt{2^2*2^2*5^2~11} = 3*3*11\sqrt{3}*2*2*5\sqrt{11} =1980\sqrt{33}$

$\sqrt{1125} + \sqrt{2420} = \sqrt{3^2*5^2*5} + \sqrt{2^2*11^2*5} = 3*5\sqrt{5} + 2*11\sqrt{5} =15\sqrt{5} + 22\sqrt{5} = 37\sqrt{5}$

8 0

3 years ago

Which expresion is equivilenet to 3/24

dusya [7]

Answer:

1/8

Step-by-step explanation:

divide both sides by 3

4 0

2 years ago

Find the slope of the line passing through (3,5) and (-4,-10)

Rudiy27

Answer:

$\frac{15}{7}$

Step-by-step explanation:

Please see attached picture for full solution.

3 0

3 years ago

Ellen is playing a video game in which she captures butterflies. There are 5 butterflies onscreen, but the number of butterflies

vovikov84 [41]

(Each minute+1)((Number of butterflies)^2)

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3 years ago

As an estimation we are told £3 is €4.<br> Convert £33 to euros.

Triss [41]

Answer:

44 euros

Step-by-step explanation:

if the ratio between an english pound and a euro is 3 to 4 respectivley, the ratios will hold true for any number. Since 33/3 = 11, we can stratigically multiply by 1,

3/4 = (3/4)(11/11)

so the ratios would be the same, multiplying, you would get 33/44, which means 33 pounds for 44 euros

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3 years ago