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4 years ago

Difference between mafic intermediate and felsic magmas

Mathematics

1 answer:

Inga [223]4 years ago

8 0

Both are indicators of the chemical composition of silicate minerals, magmas and rocks.

Mafic is used for silicate minerals, magmas and rocks that are composed of heavier elements, like magnesium, iron, calcium and sodium. They are dark and have high specific gravities.

Opposite to the this, felsic silicate minerals, magmas and rocks in their composition have less from these heavy elements. They are composed from silicon, oxygen, aluminium and potassium, are light in color and have lower specific gravities.

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Write and simplify the equation you would use to solve the problem below. You buy 5 tickets to a concert for you and your friend

sergejj [24]

X = (170-20)/5
x = 150/5
x = 30 per ticket

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4 years ago

In class of 30 student, 10% of the students are male. How many female students are in class?

MakcuM [25]

Answer:

27 females are in the class

Step-by-step explanation:

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3 years ago

A list of numbers is given 32,16,8,4,2,1 Write a rule for the pattern

Sphinxa [80]

It is subtracting the current number by 1/2 OR you can divide by 2. each time.

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Hope this helped!

5 0

3 years ago

Read 2 more answers

An online furniture store sells chairs for $150 each and tables for $400 each. The store must sell a minimum of $4900 worth of c

Snowcat [4.5K]

Answer: 150c + 400t ≥ 4900

Step-by-step explanation:

Let the number of chairs sold = c

Let the number of tables sold = t

Price for each chair = $150

Price for each table = $400

The inequality that could represent the number of tables and chairs sold will be:

(150 × c) + (400 × t) ≥ 4900

150c + 400t ≥ 4900

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3 years ago

The diameters of bolts produced in a machine shop are normally distributed with a mean of 5.26 millimeters and a standard deviat

Molodets [167]

Answer:

Top 10%: 5.35 millimeters

Bottom 10%: 5.17 millimeters

Step-by-step explanation:

Problems of normally distributed samples 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.

In this problem, we have that:

$\mu = 5.26, \sigma = 0.07$