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3 years ago

Read the scales of this balance.

Mathematics

2 answers:

babunello [35]3 years ago

6 0

Answer:

D) 1.200g

Step-by-step explanation:

from scale...

top line of scale = 0g

2nd line of scale = 1g

3rd line of scale = 0.2g

total from scale = 0 + 1 + .2 = 1.2g

DanielleElmas [232]3 years ago

4 0

Answer:

D.1.200 g

Step-by-step explanation:

We are given that unknown sample

We have to find the mass of unknown sample by reading the scales of given balance.

On first scale , reading=0 g

On second scale, reading=1g

On third scale, reading=0.2 g

Total mass=0+1+0.2=1.2 g

1.2 g can be written as 1.200 g because after decimal point when we write zeroes then it does not effect value of given number.

Hence, option D is true.

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A local hamburger shop sold a combined total of 557 hamburgers and cheeseburgers on Friday. There were 57 more cheeseburgers sol

vagabundo [1.1K]

Answer:

Equation: 557=2x+57

Let x=hamburgers sold

Solution: 250 hamburgers

Step-by-step explanation:

1. Subtract 57 from both sides of the equation

2. Divide both sides of the equation by 2

3. x=250

5 0

3 years ago

Help. Please open powerpoint and help me!

GREYUIT [131]

Answer:

30.4% 

1000 at £1.10

1000 x 1.10 = £1100

35% of 1000 is given away

1000 - 35% = 1000 - 350 = 650 left

35% of £1100 = £385, subtract to get £715 pounds worth of pins left

650 are left, with 385 pounds lost

60% of 650 = 390 pins sold at £3 each

40% of 650 = 260 sold at £5 for 2

3 x 390 = £1170 made from the first lot

260/2 = 130 x 5 = £650 made from the second lot

£1170 + £650 = £1820 from sales

Sales - cost to make - losses (giveaways) = profit value

1820 - 1100 - 385 = 335 pounds of profit

To find the gross profit margin, we take the profit, and find what percentage of the production cost it is.

335 is about 30.45% of 1100

30.45%, which is 30.4% to 1 decimal place.

The user is not responsible for any errors and all care should be taken to validate answer by self before submission.

7 0

3 years ago

Amanda uses 9 L of water to water 24 flower pots. She is wondering how many liters of water would it take to water 40 flower pot

LUCKY_DIMON [66]

Answer:

15 L of water

Step-by-step explanation:

24 pots -------------> require 9L of water

1 pot -----------------> requires (9/24) L of water

40 pots -------------> (9/24) x 40 = 15 L of water

8 0

3 years ago

The voting trends for 163 countries were studied. Malta was rated number 1, but was left off of Table 2-2 which is a random samp

Crazy boy [7]

I think the possible way that the percentage vote of a country is different to the next random sampling to the other data table is its population in each country. In the first table i think Malta has the edge to this table data and place in number 1 but to the other data table the country was left of.

4 0

3 years ago

Bobby wants to go on a school trip that will cost him $250. He comes up with an equation that represents how much he needs to sa

monitta

Yes, Bobby will have enough money if he saves for 9 weeks. You can find this through either substituting w for 9 in the equation, or solving the equation itself.

Substituting:

$25(9)+30$
Substitute w for 9.

$225+30$
Simplify.

$225+30=255$
Solve.

255 is greater than 250, so yes, he will have enough money saved.

Solving the equation:

$25w+30=250$
Original Equation

$25w=220$
Subtract 30 from both sides.

$w=8.8$
Divide both sides by 25.

The number of weeks he needs is 8.8. When rounding it up, you get 9.

4 0

3 years ago