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3 years ago

14

Kyra opened a nail salon. For each manicure, Kyra charges $12. This week, Kyra has a goal of making a total of $200. Write an in

equality that shows the minimum number of manicures that Kyra will need to give in order to meet her goal.

1 answer:

Nadya [2.5K]3 years ago

7 0

Im pretty sure its 12m<200 but its the less than sign with a line under it (im on phone so i cant type it)

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The weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation

Korvikt [17]

Answer:

The z-score of a male bird of this species with a weight of 29.37 grams is 1.7.

Step-by-step explanation:

We are given that the weights of adult male birds of a certain species are normally distributed with a mean of 27.5 grams and a standard deviation of 1.1 grams.

<u><em>Let X = weights of adult male birds of a certain species</em></u>

So, X ~ Normal( $\mu=27.5,\sigma^{2} =1.1^{2}$ )

The z score probability distribution for normal distribution is given by;

Z = $\frac{ X-\mu}{\sigma } }$ ~ N(0,1)

where, $\mu$ = population mean weight = 27.5 grams

$\sigma$ = standard deviation = 1.1 grams

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) 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.

SO, the z-score of a male bird of this species with a weight of 29.37 grams is given by;

<u>Z score</u> = $\frac{ X-\mu}{\sigma } }$ = $\frac{ 29.37-27.5}{1.1 } }$

= <u>1.7</u>

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2 years ago

What is 33 over 55 and how do you simplify it.

Sergeu [11.5K]

$\frac{33}{55}= \frac{33\div11}{55\div11}=\boxed {\frac{3}{5} }$

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3 years ago

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SOMEONE HELP ME WITH THIS PROOF

Pavlova-9 [17]

Okay, for this proof, I'll write the steps out.

Statements:
1. ABCD is a parallelogram
2. FG bisects DB
3. <GEB ≡ (pretend congruent symbol) <FED
4. DE ≡ BE
5. <CDA ≡ <ABC
6. < CDB ≡ <DBA
7. triangle DFE ≡ triangle BGE
8. FE ≡ GE
9. DB bisects FG

Reasons:
1. Given
2. Given
3. vertical angles are congruent
4. If bisected, then split into congruent parts
5. opposite angles of a parallelogram are congruent
6. Subtraction Property
7. ASA
8. CPCTC
9. segment split into congruent parts by other segment is bisected.

Hope this helped! :)

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2 years ago

In 2015, there were approximately 33,400 firearm fatalities (homicide and suicides) Express this quantity in deaths per hour

cestrela7 [59]

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A theatre has 1200 seats. Each row has 20 seats. Write and solve an equation to find the number of rows in the theatre

Brut [27]

Answer:

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