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3 years ago

5

Christy bought an 8 foot piece of lumber to trim a bookshelf.Altogether she needs 100 inches of lumber for the trim. Did christy

buy enough lumber? Explain

1 answer:

soldi70 [24.7K]3 years ago

6 0

Christy did not get enough because 12 times 8 = 96. she needs 4 for inches.

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Expand and simplify 5(3x+2)-2(4x-1)

blsea [12.9K]

5(3x+2)-2(4x-1)

= 15x+10-8x+2

= 7x+12

6 0

2 years ago

If the racetrack publishes that the odds in favor of a horse winning a race are 5 to 9, what is probability that the horse will

crimeas [40]

I divided 5 by 9 and multiplied it by 100 to get the percentage for the probability the horse will win. I got 55.55%. I subtracted 55.55 from 100 and got 44.45% chance of not winning the race.

5 0

3 years ago

Read 2 more answers

Candice is preparing for her final exam in Statistics. She knows she needs an 74 out of 100 to earn an A overall in the course.

Salsk061 [2.6K]

Answer:

Hence the correct option is option b) Yes, the upper level of one standard deviation is 72.

A score of 74 is not within one standard deviation of the mean.

Step-by-step explanation:

Here the given details are,

Mean = 68

SD = 4

Distribution is normal.

Z-score for x = 74 is given as below:

$Z = (X - mean)/SD\\Z = (74 - 68)/4\\Z = 1.5$

So, the score of 74 is 1.5 standard deviations from the mean.

$Mean + 1\timesSD = 68 + 1\times4 = 72Mean - 1\timesSD = 68 - 1\times4 = 64$

Therefore the score is not lies between 64 and 72.

Yes, the upper level of one standard deviation is 72.

3 0

3 years ago

Urgent Fast!!!!!!!??????

faltersainse [42]

If he has 484 plants and there are as many rows as there are plants in each row, his field is a square.

The area of a square = (side)^2

In this problem,

Area = 484

side = # of rows

Let's plug our values into the formula above

484 plants = (side)^2

Take the sqrt of both sides.

22 rows = side.

8 0

3 years ago

Read 2 more answers

Need help ASAP! Choose the numbers that are irrational. 1. 0. 87 repeating 2. 3.624 3. √2 4. 0. 6 repeating 5. -5 6. 1 over 3 7.

svp [43]

Answer:

√2, pi.

Step-by-step explanation:

An irrational number cannot be written as a fraction a/b where a and b are integers ( not = 0)..

3 0

3 years ago