Use the data thing to answer all the questions plz

Describe a real word world problem you could solve using a proportion

katen-ka-za [31]

Answer:

if dad used 6 gallons every week then what will he use for 7 weeks?

Step-by-step explanation:

6 muliplied by 7 = answer :)

5 0

3 years ago

Which equation has infinitely many solutions?

Snezhnost [94]

Answer:

Bbbbbbbbbbbbbbbbbbbbbb

4 0

3 years ago

Identify the terms of the expression and their coefficients

Vera_Pavlovna [14]

Answer:

Terms: 4x, - $\frac{x}{2}$

Coefficients: 4, $\frac{1}{2}$

Step-by-step explanation:

The terms of an expression are the numbers and variables that are being added. In this expression 4x is being added to - $\frac{x}{2}$ . This means that they must be the terms. The coefficients are the constants that come before a variable. A variable is an unknown number represented by a letter, in this case, x. So the coefficients are 4 and $\frac{1}{2}$ because both these numbers are being multiplied by a variable.

8 0

3 years ago

The value of V8 is between which two integers?<br> 7 and 9<br> 49 and 81<br> 2 and 3<br> 3 and 4

nekit [7.7K]

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$\sqrt{4} < \sqrt{8} < \sqrt{9}$

Thus :

$2 < \sqrt{8} < 3$

So √8 is between 2 and 3 ,

Which means option three is the correct answer.

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8 0

3 years ago

A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviat

Mnenie [13.5K]

Answer:

B. Mean = 1.6 years, standard deviation = 0.92 years, shape: approximately Normal.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be 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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction of normal variables:

When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

35 gas ovens

A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviation of 4.2 years. This means that:

$\mu_G = 15, \sigma_G = 4.2, n = 35, s_G = \frac{4.2}{\sqrt{35}} = 0.71$