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3 years ago

Write each repeating decimal using bar

Mathematics

1 answer:

SVETLANKA909090 [29]3 years ago

6 0

Answer:

*The bar is supposed to go on top of the number, but I will put it at the bottom because I don't know how to do it at the top*

a) 0.5

b) 0.13456

Step-by-step explanation:

a) The 5 is repeating so you put the bar on top of the 5

b) The number 13456 is repeated so you put the bar on top of the 13456

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How to factor z²-4z+4

allochka39001 [22]

$\implies {\blue {\boxed {\boxed {\purple {\sf { \: ({ \: z - 2 \: })^{2} \: }}}}}}$

$\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}$

${z}^{2} - 4z + 4$

$= {z}^{2} - 2z - 2z + 4$

Taking " $z$ " as common from first two terms and " $2$ " from last two terms, we have

$= z \: ( \: z - 2 \: ) - 2 \: ( \: z - 2 \: )$

Taking the factor $(z-2)$ as common,

$= ( \: z - 2 \: )( \: z - 2 \: )$

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4 years ago

1.Выполните действия:

Step2247 [10]

Answer:

Step-by-step explanation:

a. a^4 - 2ab^2 - 2ab^2 + 4b^4 = a^4 - 4ab^2 + 4b^2

b. 49x^2 - 14x + 1

c. 25a^2 - 20ab^4 + 4b^8

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3 years ago

A taxi driver can cover a distance of 130.16 miles per gallon per 5 gallons of gas if the same taxi driver travel 60 miles at th

uysha [10]

Answer:

$Gallons = 2.305$

Step-by-step explanation:

Given

Rate = 130.16 miles for 5 gallons

Required

Number of gallons used for a journey of 60 miles

The rate in miles per gallon is calculated as:

$Rate = \frac{Distance}{Gallons}$

When distance = 130.16 and gallons = 5, we have:

$Rate = \frac{130.16}{5}$

$Rate = 26.032$

When distance = 60 miles.

Substitute 60 for distance and 26.032 for rate in $Rate = \frac{Distance}{Gallons}$

$26.032 = \frac{60}{Gallons}$

Cross Multiply

$Gallons * 26.032 = 60$

$Gallons = \frac{60}{26.032}$

$Gallons = 2.305$ --- approximated

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3 years ago