1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zysi [14]
2 years ago
9

I need help with cramer's rule​

Mathematics
1 answer:
natali 33 [55]2 years ago
4 0
Aight .. what exactly do you need help with?
You might be interested in
Identify the values that should be written to complete the X diagram.
cestrela7 [59]

Answer:

See the attachment for what goes on your X diagram.

Rewrite: x² -7x +4x -28

Grouping: (x² -7x) +(4x -28) = x(x -7) +4(x -7) = (x +4)(x -7)

Step-by-step explanation:

The given quadratic is ...

... x² -3x -28 . . . . . a=1, b=-3, c=-28

a) The value at the top of the X diagram is the product a·c = 1·(-28) = -28.

The value at the bottom of the X diagram is the coefficient b = -3.

The values on the sides of the diagram are the factors of -28 that add up to make -3. These are -7 and 4. That is, ...

(-7)·(4) = -28

(-7)+(4) = -3

b) Since the two values on the sides of the diagram add up to give "b", the value of "b" in the equation can be rewritten as the sum of these two numbers. Doing that, we have ...

... x² -3x -28

... = x² +(-7+4)x -28

... = x² -7x +4x -28 . . . . . . order does not matter. It could also be x² +4x -7x -28

c) We can group pairs of terms in the rewritten expression and factor each pair.

... = (x² -7x) +(4x -28) . . . . . first pair has a common factor of x; second pair, 4

... = x(x -7) +4(x -7) . . . . . . . these terms now have a common factor: (x -7)

... = (x +4)(x -7) . . . . . . . . . . the complete factorization of x² -3x -28

3 0
3 years ago
What are the dimensions of the product?
Oksi-84 [34.3K]

Answer:

<h2>2 x 2</h2>

Step-by-step explanation:

Dimensions: m x n

m = number of rows

n = number of columns

When multiplying two matrices:

m x n *  n x k = m x k

MATIX 1:

m = number of rows

n = number of columns

MATRIX 2:

n = number of rows

k = number of columns

RESULTING MATIX:

m = number of rows

k = number of columns

2 x 3 * 3 x 2 = 2 x 2

8 0
3 years ago
Read 2 more answers
A bakery packages 868 cupcakes into 31 boxes. The same number of cupcakes are pput into each box. How many cupcakes are in each
ratelena [41]
To find this you would divide 868cupcakes by 31boxes witches is 28cupcakes in each box
hope this helps good luck have a good nite hope u enjoy ur the rest of ur weekend
6 0
3 years ago
What is y when x is 893?
garik1379 [7]

The computation shows that the value of y when is 893 will be 1339.5

<h3>How to compute the value?</h3>

It should be noted that when x is 2 y is 3.

Therefore, the value of y when x is 893 will be

= 893 × 3/2

= 1339.5

Therefore, the value of y will be 1339.5

Learn more about computations on:

brainly.com/question/4658834

#SPJ1

When x is 2, y is 3. Then what is y when x is 893?

5 0
1 year ago
Is riding an elevator down 3 floors positive or negative
creativ13 [48]

Answer:

negative

Step-by-step explanation:

that would be a negative corrolation

5 0
2 years ago
Read 2 more answers
Other questions:
  • −20cos ​2 ​​ x−3cosx=−2 answer in decimals
    15·2 answers
  • Which of the following pair(s) of circles have /as a common internal tangent? Select all that apply.
    11·1 answer
  • Please help! Question above
    5·1 answer
  • 5/12 - 3/10 we are doing keep change change
    5·2 answers
  • <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B100%7D%7B1000%7D%20%20%3D%20%20%7B10%7D%5E%7Bx%7D%20" id="TexFormula1" title=" \f
    13·2 answers
  • Frankie descends 56 ft in 4 minutes. what is frankies average change in position per minute from which he started.
    7·1 answer
  • What is the relationship between the area of the rectangle ABCD and triangle ABC?
    15·2 answers
  • Sophia works in a clothing store and earns $40 per day. She earns an extra $5 for each outfit she sells. If Sophia wants to earn
    11·2 answers
  • A square piece of cheese covers 10 square inches of a plate. What is the approximate length of one side of the piece of cheese?
    15·2 answers
  • When the outlier are removed, how does the mean change?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!