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3 years ago

Which graph shows the solution to the inequality -3x-7x<20

1 answer:

hjlf3 years ago

5 0

A graph of this inequality would be a number line, with the number -2 circled (not filled in), and the number line to the right of -2 shaded.

To solve this, you will combine like terms first:

-3x-7x < 20
-10x < 20

Divide both sides by -10:
-10x/-10 < 20/-10

When you divide an inequality by a negative number, you flip the inequality symbol:

x > -2

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(05.08)Solve for x: 7 over 8 minus 1 over x equals 3 over 4.

NemiM [27]

If you are asking 7/8 - 1/x= 3/4,

first put 3/4 to 6/8 to make it easier.

Move the 7/8 over to the right. You will get 1/x=-1/8.

Simplify, it is x=-8.

Check=7/8 - 1/8=6/8

It checks out.

8 0

3 years ago

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What are 5 applications of Geometry in real life?

Xelga [282]

Answer:

•construction of buildings

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3 years ago

The (i,j) minor of a matrix A is the matrix Aij obtained by deleting row i and column j from A.

STatiana [176]

The (i,j) minor of a matrix A is the matrix Aij obtained by deleting row i and column j from A it is true.

The (i,j) minor of a matrix A is the matrix Aij obtained by deleting row i and column j from A. A determinant of an n×n matrix can be defined as a sum of multiples of determinants of (n−1)×(n−1) sub matrices.

This is done by deleting the row and column which the elements belong and then finding the determinant by considering the remaining elements. Then find the co factor of the elements. It is done by multiplying the minor of the element with -1i+j. If Mij is the minor, then co factor, $c_{ij}$ $= -1^{i+j}$ + $m_{ij}$ .

Each element in a square matrix has its own minor. The minor is the value of the determinant of the matrix that results from crossing out the row and column of the element .

Learn more about the minor of the matrix here:

brainly.com/question/26231126

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4 0

1 year ago

Convert 8/9 to its decimal form and round to the nearest thousandth

mote1985 [20]

To figure out what a fraction is as a decimal u would do the top divided by the bottom

For this fraction it would look like this,

8 divided by 9 which would get you 0.88888888888

So your decimal is 0.889

Its not 0.888 because with decimals since a typical decimal is show as 2-3 numbers it would be rounded up to keep it as 3 numbers or less. so this would be 0.889 or if that doesnt work 0.888 with a line over the last 8.

7 0

3 years ago

The school is ordering 2,000 cupcakes to celebrate reading.the school can Oder the cupcakes in the sets of 10.how many sets of 1

aleksklad [387]

Answer:

200 sets of 10 can be ordered to complete the order of 2,000 cakes.

Step-by-step explanation:

Total numbers of cupcakes to be ordered = 2,000

The number of cupcakes in 1 set = 10

So, $\textrm{Total sets to be ordered} = \frac{\textrm{Total Cupcakes to be ordered}}{\textrm{Cupcakes in 1 set}}$

= $\frac{2,000}{10} = 200$

or, Number of cupcake sets = 200

Hence, 200 sets of 10 can be ordered.

3 0

4 years ago