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3 years ago

Can somebody help plzzzz anyone

Mathematics

2 answers:

aliya0001 [1]3 years ago

4 0

Answer:

The answer is D.

Step-by-step explanation:

Look at the amount of zeros went over to the left so negative 3

Katen [24]3 years ago

4 0

Answer- D because it’s takes 3 integers in the negative way to get to the 3 in .0013
So it’ll be 10^-3

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What is the answer to this

adoni [48]

Answer:

I believe it is c

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3 years ago

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#15For his science experiment, Julio placed a pan of water in his refrigerator to see how long it would take to evaporate. After

melamori03 [73]

The amount of water in the pan at start is 320 ml.

It takes 16 days until no water remains in the pan.

Step-by-step explanation:

Julio placed a pan of water in his refrigerator to see how long it would take to evaporate.

Let, the volume of water in the the pan during the start be 'x' milliliters.

After 2 days, he found that the water in the pan got reduced to 280 ml
After 4 days, he found that the water in the pan got reduced to 240 ml.

Therefore, the difference in the volume of water within 2 days can be calculated using the given data.

The amount of water reduced in 2 days = volume of water remained after 2 days - volume of water remained after 4 days

⇒ 280 - 240 = 40 milliliters.

In can be determined that :

For 2 days the water gets evaporated by 40 milliliters.
Thus, Each day 20 milliliters of the water gets evaporated from the pan.

To find the amount of water 'x' in the pan at start :

Before 2 days, the water in the pan is 40 milliliters greater than the water in the pan after 2 days.

The amount of water after 2 days is already given in the question itself which is 280 ml.

⇒ x = 280 + 40

⇒ x = 320 ml.

The amount of water in the pan at start is 320 ml.

To find the no. of days until no water remains in the pan :

The number of days at which all the water gets evaporated is calculated by,

⇒ Total milliliters in the pan at start / No.of milliliters evaporated per day

⇒ 320 ml / 20 ml

⇒ 16 days.

It takes 16 days until no water remains in the pan.

8 0

4 years ago

Help!!!!!!!!!!

olya-2409 [2.1K]

Answer:

I dont understand what you are asking. Sorry. I would love to help, but I don't understand the question.

Step-by-step explanation:

4 0

3 years ago

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What is the value of x, when 10(x + 2) = 5(x + 8)?

olga_2 [115]

Solve for x:
10 (x + 2) = 5 (x + 8)

Expand out terms of the left hand side:
10 x + 20 = 5 (x + 8)

Expand out terms of the right hand side:
10 x + 20 = 5 x + 40

Subtract 5 x from both sides:
(10 x - 5 x) + 20 = (5 x - 5 x) + 40

10 x - 5 x = 5 x:
5 x + 20 = (5 x - 5 x) + 40

5 x - 5 x = 0:
5 x + 20 = 40

Subtract 20 from both sides:
5 x + (20 - 20) = 40 - 20

20 - 20 = 0:
5 x = 40 - 20

40 - 20 = 20:
5 x = 20

Divide both sides of 5 x = 20 by 5:
(5 x)/5 = 20/5

5/5 = 1:
x = 20/5

The gcd of 20 and 5 is 5, so 20/5 = (5×4)/(5×1) = 5/5×4 = 4:

Answer: x = 4

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3 years ago

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Karley is an architect building the city pool. The larger rectangle represents the entire pool area. The smaller rectangle repre

Ahat [919]

Answer:

Area of the walkway border is 736 ft²

Step-by-step explanation:

A rectangle is a quadrilateral (has four sides and four angles) with two pairs of opposite and parallel sides. All angles in a rectangle are 90 degrees each. Also, opposite sides are equal.

The entire pool area has a length of 60 feet and width of 40 feet. The area of the entire pool area is:

Area of entire pool = length * width = 60 feet * 40 feet = 2400 ft²

The area of entire pool

A walkaway border of 4 ft is made around the pool area. There is a decrease of 4 ft round the sides of the pool area.

Therefore length of pool = length of entire pool area - 4 feet border at left - 4 feet border at right = 60 ft - 4 ft - 4 ft = 52 ft

width of pool = width of entire pool area - 4 feet border at top - 4 feet border at bottom = 40 ft - 4 ft - 4 ft = 32 ft

Therefore the pool is 52 ft × 32 ft

Area of pool = length * width = 52 ft * 32 ft = 1664 ft²

Area of the walkway border = Entire pool area - Area of pool = 2400 ft² - 1664 ft² = 736 ft²

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3 years ago