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Murljashka [212]
3 years ago
9

Item 3

Mathematics
2 answers:
Zina [86]3 years ago
7 0

Answer:

22

Step-by-step explanation:

Marina CMI [18]3 years ago
7 0
次沒這月山木口尸火尸火山尸十金竹火土木土金
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Talya is putting up a fence around their rectangular yard. The fence will be 16 yards long and 5 yards wide.
Vesna [10]

Answer:

80 yards2

Step-by-step explanation:

Area = l × w

= 16 × 5

= 80 yards2

8 0
3 years ago
What do you think the value of represents in the function? How can you predict what the graph of a quadrati function will look l
allochka39001 [22]

Answer:

Step-by-step explanation:

Parts of the question are missing.

y = a(x-h)² + k is a vertical parabola.

If a is positive, the parabola opens upwards.

If a is negative, the parabola opens downwards.

The vertex is at (h, k)

7 0
3 years ago
In Melanie's Styling Salon, the time to complete a simple haircut is normally distributed with a mean of 25 minutes and a standa
Triss [41]

Answer:

Longer than 27.7 minutes.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 25, \sigma = 4

The slowest quarter of customers will require longer than how many minutes (to the nearest tenth) for a simple haircut?

Longer than the 100 - 25 = 75th percentile of times, which is X when Z has a pvalue of 0.75. So X when Z = 0.675. So

Z = \frac{X - \mu}{\sigma}

0.675 = \frac{X - 25}{4}

X - 25 = 4*0.675

X = 27.7

So

Longer than 27.7 minutes.

8 0
3 years ago
You are cutting as many 20 1/2-inch pieces from the board to make
zlopas [31]

Answer: The number of steps you can make is 5 pieces and \dfrac{35}{41}\ inch is left over.

Step-by-step explanation:

Since we have given that

Length of pieces from the board to make ladder steps for a tree fort = 20\dfrac{1}{2}\ inch=\dfrac{41}{2}

Length of board = 120 inch

Number of pieces from the board to make ladder steps for a tree fort is given by

120\div \dfrac{41}{2}\\\\=120\times \dfrac{2}{41}\\\\=\dfrac{240}{41}\\\\=5\dfrac{35}{41}

Hence, the number of steps you can make is 5 pieces and \dfrac{35}{41}\ inch is left over.

4 0
3 years ago
Using the given statements, state whether the conditional statement is true or false. p: 2 + 2 = 4 q: 7 + 1 = 7 Is p q true or f
Mrrafil [7]
2+2=4 i.e P is true but 7+1≠7 it must be 8 so q is false
5 0
3 years ago
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