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3 years ago

Perform the operation (7x3)+(- 2x3/8x2)

Mathematics

1 answer:

Colt1911 [192]3 years ago

3 0

(7x3) + (-2 x 3/ 8 x 2)
21 + (-6) (16)
21+96
117

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The Bureau of the Census reports that the median family income for all families in the United States during the year 2003 was $4

miv72 [106K]

Answer:

{GGGG, GGGN, GGNG, GNGG, NGGG, GGNN, GNGN, GNNG, NGGN, NGNG, NNGG, GNNN, NGNN, NNGN. NNNG, NNNN}

Step-by-step explanation:

4 families are surveyed and each one reveals whether its income exceeded $43,318 in 2003. Each family has two possibilities: Having an income greater than 43,318 (G), or is not greater than $43,318 (N). We have 2⁴ = 16 different outcomes.

The possible outcomes are: GGGG, GGGN, GGNG, GNGG, NGGG, GGNN, GNGN, GNNG, NGGN, NGNG, NNGG, GNNN, NGNN, NNGN. NNNG, NNNN.

Therefore the sample space is {GGGG, GGGN, GGNG, GNGG, NGGG, GGNN, GNGN, GNNG, NGGN, NGNG, NNGG, GNNN, NGNN, NNGN. NNNG, NNNN}

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3 years ago

Determine the values of the parameter s for which the system has a unique solution, and describe the solution. sx 1 minus 2 sx

JulijaS [17]

Note: The equations written in this questions are not appropriately expressed, however, i will work with hypothetical equations that will enable you to solve any problems of this kind.

Answer:

For the system of equations to be unique, s can take all values except 2 and -2

Step-by-step explanation:

$2sx_{1} + 4x_{2} = -3\\2x_{1} + sx_{2} = 4$

$\left[\begin{array}{ccc}2s&4\\2&s\end{array}\right] \left[\begin{array}{ccc}x_{1} \\x_{2} \end{array}\right] = \left[\begin{array}{ccc}-3 \\6 \end{array}\right]$

For the system to have a unique solution, $\begin{vmatrix} 2s & 4 \\ 2 & s \end{vmatrix} \neq 0$

$2s^{2} -8 \neq 0\\2s^{2}\neq 8\\s^{2}\neq 4\\s \neq 2 or -2$

6 0

4 years ago

Find the length and width of a rectangle with an area of 2x + x - 3.

pogonyaev

Hdjdbbxbshwvshs bdb scud

8 0

3 years ago

A storage shed is shaped like a

Tresset [83]

Answer:

Divide the total cubic yards by the width and height

Step-by-step explanation:

288 / 4 = 72

72 / 8 = 9

Length = 9

6 0

3 years ago

Read 2 more answers

1. If AD = 25, then BC =<br> 2. If AB = 30, then DC =

Aleonysh [2.5K]

Answer:

1. BC=25

2. DC=30

Step-by-step explanation:

In a parallelogram, pairs of opposite sides are always equal. The side opposite of AD is BC, so if AD=25, BC=25. Likewise, if side AB=30, side DC=30. Of course, this is assuming the shape is a parallelogram. If it is not, there is no way of determining the side lengths.

lmk if im wrong, hope this helps :)

4 0

3 years ago

Perform the operation￼ (7x3)+(- 2x3/8x2)

Perform the operation (7x3)+(- 2x3/8x2)