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4 years ago

What is the unknown digit 5.723<572?<5.725

Mathematics

2 answers:

vovangra [49]4 years ago

4 0

The unknown digit is 5.724

Pavlova-9 [17]4 years ago

3 0

So we have 5723 and 157x and 1575
X representing the number we have to find.
I was able to get that the missing number was 4 because the ends of the numbers are going 3 4 5

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Simplify the expression ((81y^-8)/(16x^20))^-1/4

Darina [25.2K]

$\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad 
a^n\implies \cfrac{1}{a^{-n}}
\\\\
-------------------------------$

$\bf \left( \cfrac{81y^{-8}}{16x^{20}} \right)^{-\frac{1}{4}}\implies \left( \cfrac{16x^{20}}{81y^{-8}} \right)^{\frac{1}{4}}\implies \left( \cfrac{2^4x^{20}}{3^4y^{-8}} \right)^{\frac{1}{4}}
\\\\\\
\textit{and now we'll distribute the exponent}\qquad \left( \cfrac{2^{4\cdot \frac{1}{4}}x^{20\cdot \frac{1}{4}}}{3^{4\cdot \frac{1}{4}}y^{-8\cdot \frac{1}{4}}} \right)
\\\\\\
\cfrac{2^1x^5}{3^1y^{-2}}\implies \cfrac{2^1x^5y^2}{3^1}\implies \cfrac{2x^5y^2}{3}$

6 0

3 years ago

Dena has 6.25 inches of blue ribbon, 0.375 foot of orange ribbon, and 0.5 yard of green ribbon. How many inches of ribbon does D

ipn [44]

Answer:

Step-by-step explanation:

We are expected to convert all units to inches in this problem

Step one:

given data

blue ribbon=6.25 inches

orange ribbon=0.375 foot

green ribbon=0.5 yard

Step one:

convert orange ribbon=0.375 foot to inches

1 ft = 12 in

0.375ft=xin

cross multiply

x=12*0.375

x=4.5in

orange ribbon= 4.5in

convert green ribbon yd to inches

1 yd = 36 in

0.5 yd=xin

cross multiply

x=36*0.5

x=18in

green ribbon= 36in

total lenght in inches =6.25+4.5+18

=28.75in

3 0

3 years ago

Jimmy gets a discount of 35% for a pair of sneakers with an original price of $70. He also gets a discount of 25% on a shirt wit

IRINA_888 [86]

70*35 / 100 + 30*25 / 100

2450 /100 + 750/100

24.50 + 7.50 = 32

So, your answer is $32

~ Hope this helps ~

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3 years ago

Evaluate 5y-2x when y=10 and x=3

kvv77 [185]

5(10) - 2(3) , 50 - 6 , 44

4 0

3 years ago

What is the approximate surface area of the figure?

vampirchik [111]

Answer:

133.04 is the approximate answer

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3 years ago