the amount of water in a bottle is reduced by 85% to 120 milliters how many water was originally in the bottle.

Answers

Answer 1

Answer: Given:
Rate of reduction : 85%
Remaining volume: 120 ml.

This means that 120 ml is equivalent to 15% of the original volume.

100% - 85% = 15%

120 ml ÷ 15% = 800 ml.

There was 800 ml of water before it was reduced.

800 ml * 85% = 680 ml ⇒ volume reduced
800 ml - 680 ml = 120 ml ⇒ volume left after reduction.

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If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?A. 2 hours and 24 minutes
B. 3 hours and 12 minutes
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D. 4 hours and 10 minutes
E. 4 hours and 33 minutes

Answers

$1.\n \begin{array}{ccc}p\ (min)&-&1\ (page)\n\n5\ (min)&-&x\ (pages)\n\n\end{array}\n\ncross\ multiply:\n\np\cdot x=5\cdot1\n\npx=5\ \ \ \ /:p\n\nx=(5)/(p)\n\nAnswer:D.$

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The area of a trapezoid is 39 square millimeters. The height of the trapezoid is 6 millimeters. One of the base lengths of the trapezoidcis 5 millimeters. What is the length of the other base of the trapezoid?

Answers

the answers is really
8mm

A triangle has side lengths of (1.9x + 6.2y) centimeters, (2.5x + 8.3w) centimeters, and (1.6w - 5.1y) centimeters.PART A:

Write an expression that represents the perimeter, in centimeters, of the triangle.

Show all work.

PART B:

Write an equivalent expression to represent the perimeter from PART A. by factoring out the greatest common factor.

Show all work.

IF ANSWER BOTH I WILL GIVE BRAINIEST

Answers

Answer:

Step-by-step explanation:

Part A : Since sides of triangle are ( 1.9x + 6.2y )cm

(2.5x + 8.3w)cm and (1.6w - 5.1y)cm.

Now perimeter of a triangle = sum of all sides length

Perimeter = (1.9x + 6.2y) + (2.5x + 8.3w) + (1.6w - 5.1y)

= (1.9x + 2.5x) + (6.2y - 5.1y) + (8.3w + 1.6w)

[ collecting the like terms together ]

Perimeter = 4.4x + 1.1y + 9.9w

Part B : Now we factorize the term for perimeter given in part A.

Perimeter = 1.1 (4x + y + 9w)

So equivalent factor will be (1.1 (4x + y + 9w).

Answer:

see explanation

Step-by-step explanation:

The perimeter is the sum of the 3 sides, thus summing the 3 sides

1.9x + 6.2y + 2.5x + 8.3w + 1.6w - 5.1y ← combine like terms

= 4.4x + 1.1y + 9.9w ← expression for perimeter

Factor out 1.1 from each term, thus

4.4x + 1.1y + 9.9w

= 1.1(4x + y + 9w) ← perimeter in factored form

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Answers

(1 year) x (86,400 sec/day) x (365-1/4 day/yr) x (10⁹ nanos./sec)

= (1 x 86,400 x 365-1/4 x 10⁹) nanosec

= 31,557,600 x 10⁹ nanosec

= 3.15576 x 10¹⁶ nanosec

(This is a rough answer, because the 'year'
is not exactly 365-1/4 days.)

1 year = 3.1556926 × 10^16 nanoseconds

hope this helps!!

Solve the system. x - 3y = -6 and 2x + 3y = -3

Answers

Answer:

1. x = -3y - 6

2. x = (-3y - 3)/2

Step-by-step explanation:

To get x on its own, we have to add 3y to both sides. We have x = -3y - 6. For the next one, we also want to isolate the variable. So we subtract 3y and we end up with 2x = -3y - 3. Then we divide both sides by 2 and we have our answer. I hope this helps because I didn't really understand the question...

A car is travelling at 100 km/hr. How far can it travel in 3/4 of an hour?

Answers

In 1 hour the car travels for a distance = 100 km
In 3/4 hour the car travels for a distance = 100 * (3/4)
= 75 km

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