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Galina-37 [17]
3 years ago
12

A group of people are going on a 5 mil hike. They walked 2 1/10 miles in the morning and 1 1/4 mils during the first hr of the a

fternoon. How many miles do they have to walk?
Mathematics
1 answer:
Ugo [173]3 years ago
8 0
Answer: 1 13/20 miles

Explanation:

5 -  2\cfrac{1}{10} - 1 \cfrac{1}{4} = 5 \cfrac{0}{20}  -  2\cfrac{2}{20} - 1 \cfrac{5}{20} =   4 \cfrac{20}{20}  -  2\cfrac{2}{20} - 1 \cfrac{5}{20} =  1 \cfrac{13}{20}
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Factorise (2t-7)²-(5t-4)² <br>with working pls​
sertanlavr [38]

Answer:

33+12t−21t^2

Step-by-step explanation:

(2t-7)²-(5t-4)²

Use binomial theorem (a−b)^2 = a^2−2ab+b^2 to expand (2t-7)².

4t^2−28t+49−(5t-4)²

Use binomial theorem (a−b)^2 = a^2−2ab+b^2 to expand (5t-4)².

4t^2−28t+49−(25t^2−40t+16)

To find the opposite of 25t^2

−40t+16, find the opposite of each term.

4t^2−28t+49−25t^2−40t+16

Combine 4t^2  and −25t^2  to get −21t^2.

−21t^2−28t+49+40t−16

Combine −28t and 40t to get 12t.

−21t^2+12t+49−16

Subtract 16 from 49 to get 33.

−21t^2+12t+33

Swap terms to the left side.

33+12t−21t^2

I hope this helped!

5 0
3 years ago
PLEASE HELP, 50 POINTS! This is a triangle investigation.
mylen [45]
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5 0
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JulsSmile [24]
(x+2)(x+8)(x+k)=x^3+9x^2+6x-16

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k=(-x^2-10x-16)/(x^2+10x+16)

k=-1

so the width is (x-1)




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What is the measure of ∠S?
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Answer:

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Step-by-step explanation:

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