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3 years ago

The topic for this assignment is Systems of Equations

Mathematics

2 answers:

Novay_Z [31]3 years ago

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I can’t see the pic :(((

Valentin [98]3 years ago

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The Temperature over a 4 day period in Pittsburgh were as follows -6, 10, 6?and -2. Find the mean

Pepsi [2]

Answer:

You add them, then subtract them by how many numbers there are :) So add them then subtract them by 4

Step-by-step explanation:

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3 years ago

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Categorize each of the following equations as a linear equation in one variable or not.

Kaylis [27]

6b+4=2 has one variable
4+6=10 has no variable

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3 years ago

A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books. What is the probability

Gnesinka [82]

Answer:

Probability that one of them is mathematics and other two are either physics or history books = 0.51

Step-by-step explanation:

Given - A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

To find - What is the probability one of them is mathematics and other two are either physics or history books ?

Solution -

Given that,

A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

So,

Total number of books = 3 + 3 + 1 = 7

The student has to select 3 books

So, Total number of ways = $^{7} C_{3}$ = 35

So,

Probability that one of them is mathematics and other two are either physics or history books is -

= $\frac{^{3} C_{1}. ^{4} C_{2} }{^{7} C_{3}}$

= $\frac{(3)(6)}{35}$

= $\frac{18}{35}$

= 0.51

⇒Probability that one of them is mathematics and other two are either physics or history books = 0.51

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3 years ago

Sarah has two similar rectangular boxes. The dimensions of Box 1 are four times those of Box 2.

Elena-2011 [213]

Answer: 16

Step-by-step explanation:

an area is always calculated by multiplying 2 dimensions.

when changing the dimensions, then the change factors for EACH dimension go into the calculation too.

therefore, when both dimensions of an area are enlarged 4 times, then the area is enlarged 4×4 = 16 times.

this just propagates to the whole surface area of an object, as each individual area of the overall surface area is enlarged by the same factor. and so, the sum of all the individual areas (= altogether the surface area of the object) is also enlarged in total by the same factor.

just think

16×a + 16×b + 16×c ... = 16×(a+b+c+...)

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3 years ago

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What is the range of the function y = |x |?<br> x ≥ 0<br> y ≥ 0<br> all real numbers

Ivahew [28]

The range is the set of values for y. Since y=|x|, y is always positive and increases without bound as x approaches +oo. Thus the range is:

y≥0 which can also be expressed as y=[0, +oo)

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3 years ago

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