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4 years ago

Pre algebra help ( will give brainliest ) sorry if it's hard to see

Mathematics

1 answer:

Alina [70]4 years ago

4 0

3.4×10⁻¹⁴ × 1.8×10²⁸

= (3.4 x 1.8) x 10⁽⁻¹⁴⁺²⁸⁾

= 6.12 x 10¹⁴

Answer is A.

Hope it helps!

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1 Four sets of ordered pairs are shown below.

dalvyx [7]

Answer:

Step-by-step explanation:

its a, b, and d because these have inputs with different outputs

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3 years ago

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4 years ago

Is 50.1 repeating a rational or irrational number?

leonid [27]

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3 years ago

Sally is having a party and she has invited nine of her friends.

Alexeev081 [22]

Answer:

1) 5 limes, 5 lemons, 1,000 mL of pineapple juice, 2,000 mL of lemonade, 1,000 of orange juice

2) Limes = $2, Lemons = $2.5, Lemonade = $1.60, Orange Juice = 80c, Pineapple Juice = 90c

Step-by-step explanation:

1/2 limes · 10 = 5

1/2 lemons · 10 = 5

100 mL of pineapple juice · 10 = 1,000 mL

200 mL of lemonade · 10 = 2,000 mL

100 mL of orange juice · 10 = 1,000 mL

Cost:

5 limes · 0.4 = $2

5 lemons · 0.5 = $2.5

mL to L

1,000 mL of pineapple juice = 1 L, this costs 90¢

2,000 mL of lemonade = 2 L, this costs $1.60

1,000 mL of orange juice = 1 L, this costs 80¢

Overall:

5 limes for $2

5 lemons for $2.5

1 L of of pineapple juice for 90¢

2 L of lemonade for $1.60

1 L of orange juice for 80¢

3 0

4 years ago

A restaurant bill comes to $28.35 find the total coast if the tax is 6.25% and 20% tip is left on the amount before tax

luda_lava [24]

Answer:

The total cost of the bill = $36.146

Step-by-step explanation:

Here, the total amount of the bill = $28.35

Now, the amount of tip = 20%

So, calculating 20% on the bill amount, we get

$\frac{20}{100} \times 28.35 = 5.67$

or, the amount of 20% tip = $5.67

So, the total bill amount after 20% tip = Bill Amount + Tip

= $28.35 + $5.67 = $34.02

Now, the tax is calculated on the amount of bill $34.02.

$\frac{6.25}{100} \times 34.02 = 2.126$

or, the amount of tax on the bill = $2.126

So, the total bill amount after 6.25% tax = Bill Amount + Tax

= $34.02 + $2.126 = $36.146

Hence, the total cost of the bill = $36.146.

4 0

3 years ago