3 years ago

What are two reasons a common measuring system is important

1 answer:

8 0

1) You can understand and work with other people's results, you can cooperate with other people in production of goods and check their experiments to see if they are correct.

2) It reduces errors since many people work towards specifying it exactly.

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Find the surface area. 17 ft 8 ft. 20 ft 15 ft Need this fast

Orlov [11]

Answer:

920 square feet

Step-by-step explanation:

Top: 20 * 17 = 340

Side triangles: 8 * 15 / 2 = 60

2 side triangles: 60 * 2 = 120

Back rectangle: 8 * 20 = 160

Bottom rectangle: 15 * 20 = 300

All of them: 340 + 120 + 160 + 300 = 920

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3 years ago

The price of a gallon of milk is 3.75. circle the price of milk rounded to the nearest dollar

Dmitry_Shevchenko [17]

If the price of milk is $3.75 then the price of milk rounded to the nearest dollar would be $4.00. Hope this helps!!

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3 years ago

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the diagram shows a right angles triangle ABC. BC = 10 cm. angle CAB = 90 degrees. angle ABC = 30 degrees. M is the midpoint of

Karolina [17]

Answer:

angle AMC=49.1

Step-by-step explanation:

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3 years ago

At a supermarket potatoes cost 0.39 per pound. If a 10-pound bag costs 2.79,how much money will you save if you buy the 10-pound

GenaCL600 [577]

$1.11 .39 times ten is 3.90 minus 2.79 is $1.11

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3 years ago

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an item that cost $50 is marked 20% off. Sales tax for the item is 8%. What is the final price including tax? Solve the problem

kramer

Answer:

$43.20

Step-by-step explanation:

The price with tax is 100% + 8% = 1.08 times the price before tax. The discount multplies that price by 100% -20% = 0.80. The discount multiplier is the same whether the discount is applied before or after the tax.

The combined effect of the two multipliers is ...

... 1.08 × 0.80 = 0.864

so the discounted price with tax added is 0.864 × $50 = $43.20

_____

Perhaps you're supposed to figure the tax (8% of $50 = $4), add the tax ($50 +4 = $54), then subtract the discount (20% of $54 = $10.80) to get

$54.00 -10.80 = $43.20

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3 years ago