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Zarrin [17]
3 years ago
10

Ujalakhan01! Please help me! ASAP ONLY UJALAKHAN01. What's (x-1)(x-1)?

Mathematics
2 answers:
bogdanovich [222]3 years ago
5 0

Answer:

Step-by-step explanation:

simply :

  • (x-1)(x-1)= (x-1)²

                     = x²-2x=1

                     

patriot [66]3 years ago
4 0

Answer:

x^2-2x+1

Step-by-step explanation:

=> (x-1)(x-1)

Using FOIL

=> x^2-x-x+1

=> x^2-2x+1

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Mr. Smith built a rectangular-shaped sandbox for his children, measuring 4 feet by 4 feet by 6 inches. Sand has a density of app
ehidna [41]

Answer:

To completely fill the sandbox will cost $56

Step-by-step explanation:

First, we calculate volume of the rectangular-shaped sandbox:

V=long*with*height\\V=4feet*4feet*0.5feet\\V=8cubicfoot

We know that density of sand is 100 pounds per cubic foot. Then, to fill the sand box that has a volume of 8 cubic foot, we calculate by rule 3:

1cubic foot..............100 pounds

8 cubic foot.............x pounds

x=\frac{8*100}{1}

x=800 pounds

We will need 800 pounds of sand to fill the sandbox, then we can calculate by rule 3 the number of bags needed and next the total cost of them:

50 pounds.......1bag

800 pounds.....x bags

x=\frac{800*1}{50} \\x=16

To calculate the cost:

1 bag ..................$3.50

16 bags.................$x

x=16*3.50\\x=$56

To completely fill the sandbox will cost $56

4 0
3 years ago
If it rained on 3 days out of 20 days on what percent of the days did it rain
Andrei [34K]
It rained on 15% of those days
3 0
3 years ago
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Score: 0 of 1 pt
Sholpan [36]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
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Step-by-step explanation:

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3 years ago
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100 POINTS!!!!!!!!
yawa3891 [41]

Form the confidence level (99%), we calculate the "alpha" value

alpha=1-(99/100)=0.01

Now, calculate the critical probability (p-start)

p*=1-(alpha/2)=1-(0.01/2)=0.995

z-score could be calculated from p*,,,

z-score=2.57583

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number of adults = n

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The confidence interval = mean +or- ME

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So that we can conclude that the 99% confidence interval for the mean beats per minute is 68.045 and 71.955

I hope you got the idea!

5 0
3 years ago
Read 2 more answers
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