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Oksana_A [137]
3 years ago
7

18. What is the least common denominator of the following fractions? 3/10 and 1/4

Mathematics
1 answer:
Len [333]3 years ago
7 0

Answer:

20

The denominators of 3 /10  and  1 /4  are 10  and  4.

The factors of  10  are  2 × 5  and  2 × 2

Therfore the LCD should have two 2's and one 5.

This means the answer is:

2 × 2 × 5 = <u>20</u>

I hope this helps :)

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castortr0y [4]
It’s increasing by 1,2 so keep going by 1,2 and see if u get to 20,13 if not it means it’s not on that line
6 0
3 years ago
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(8/9)^-2 without an exponent
Ganezh [65]

Answer:

81/64  or 1 17/64

Step-by-step explanation:

A negative exponent means to flip the fraction

(8/9) ^-2

(9/8)^2

81/64

Changing this to a mixed number

1 17/64


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This year the winner of the new york marathon ran the 8 kilometer event in 24 mins. What is the runners unit rate
Nataliya [291]
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6 0
3 years ago
Solve the system of equations using the substitution method.y=2,2x+y=8
OlgaM077 [116]

Answer:

x=3

Step-by-step explanation:

2x+2=8

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3 0
3 years ago
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Joel wants to buy a new tablet computer from a store having a 20% off sale on all tablets. The tablet he wants has an original c
earnstyle [38]

Answer:

<u>Joel will have to pay $ 159.60 for the tablet.</u>

Step-by-step explanation:

1. Information given to us to answer the question correctly:

Discount percentage of the tablets = 20%

Original cost of the tablet = $ 190

Sales tax = 5%

2. How much will Joel pay for the tablet? Show your work in your notebook. Remember to use $.

Let's find the discounted price and the sales tax for that price, this way:

Discounted price = Original price - Discount

Discounted price = 190 - (190 * 0.2)

Discounted price = 190 - 38 = 152

Sales tax of the discounted price = 152 * 0.05

Sales tax = 7.60

Joel will have to pay = Discounted price + Sales tax

Joel will have to pay = 152 + 7.60

<u>Joel will have to pay = $ 159.60</u>

5 0
4 years ago
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