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Leokris [45]
2 years ago
5

Help..............................

Mathematics
1 answer:
nikdorinn [45]2 years ago
4 0

Answer:

2 hours

Step-by-step explanation:

Well you can make an equation for each

Lets “x” be hours

Jada, 28 +20x

Mai, 44 + 16x

So you can either make a table or a graph

I’m gonna make a table to make things easier

So lets do

jada: (0) 28  (1) 48  (2) 66  (3) 96

Mai: (0) 44  (1) 60  (2) 76  (3) 92

So we’re asked when is jada‘s service be cheaper

After 2 hours

jada <mai

whilst before

jada > mai

So 2 hours

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There were 442 students at Deerlake Middle School who voted on a theme for the spring carnival. Those who voted represent 76% of
never [62]

Answer:

Option C is correct.

Step-by-step explanation:

Number of students of Deerlake middle school that voted = 442

Percentage of student that voted = 76%

Let x be the total number of student.

According to the Question,

\frac{76}{100}\times x=442

x=442\times\frac{100}{76}

x=582

Therefore, Option C is correct.

7 0
4 years ago
How could I write the fractions 8/100 3/5 and 7/10 from least to greatest?
iVinArrow [24]
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5 0
3 years ago
Read 2 more answers
A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the probability of s
Naily [24]

Answer:

The mean is \mu = 131

Step-by-step explanation:

Problems of normally distributed samples are solved using 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 problem, we have that:

\sigma = 39

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This means that when X = 209, Z has a pvalue of 1-0.0228 = 0.9772. So when X = 209, Z = 2.

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

2 = \frac{209 - \mu}{39}

209 - \mu = 2*39

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The mean is \mu = 131

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3 years ago
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Allushta [10]

Answer:

d because its big

Step-by-step explanation:

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3 years ago
57.036 in word form and in expanded form.
scoray [572]
Here is the answer: 

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Word Form: Fifty plus seven plus zero point zero three plus zero point zero zero six
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3 years ago
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