Mathematics College

Bài 7. Biện luận theo tham số a hạng của các ma trận sau:

a)
1 2 1
0 3 2 1
5 1 0
2 7 0 1
a

a
  
 

 
  
    

b)
0 0 2 5
0 3 4
0 11 4 7
3 4 1
a

a
   
 
 
   

c)
1 2 0 3
1 1 4
0 5 1 1
0 4 0 6
a
   
 

 
  
  

Answers

Answer 1

Answer:A

Step-by-step explanation:A

Related Questions


<1 and <2 are complementary. Solve for the measure of <1.

<1 = 12x + 4
<2 = 9x + 2

A. 52
B. 4
C. 38
D. 8.3

Answers

I think it’s letter b 4

A maintenance warranty for solar heaters cost $50 a month plus a one time $15 processing fee. Complete the table to determine the total cost for different number of months.

Answers

Answer:

50+15=65

Step-by-step explanation:

I know because it says total

Write the answer to 6 2/5 × 4 in improper fraction form AND mixed number form.

Improper fraction:
-------------------------

Mixed number: -------------------------
(whole number + fraction number

Answers

Answer:

6 2/5 as an improper fraction is 32/5 and if we turn 4 into a fraction (4/1) we can multiply them.

32/5 * 4/1 = 128/5

128/5 is the improper fraction

and the mixed number is 25 3/5

Step-by-step explanation:

6 2/5 as an improper fraction is 32/5 and if we turn 4 into a fraction (4/1) we can multiply them.

32/5 * 4/1 = 128/5

Express the following rate as a unit rate: 28 1/3 minutes to run 3 1/3 miles​

Answers

Answer:

28.20

Step-by-step explanation:

60 seconds in a minute

1/3 of a minute is 20 seconds

like a good neighbor...........?

Answers

Answer:

state farm is there!

Step-by-step explanation:

state farm is there............?

Please help and answer both of the questionssss

Answers

Answer:

(n + 6) / -4 = 10

n + 6 = 10 × -4

n + 6 = -40

n = -40 - 6

n = -46

(n - 2) / -3 = -6

n - 2 = -6 × -3

n - 2 = 18

n = 18 + 2

n = 20

Step-by-step explanation:

brainliest plz

help please i need help on this

Answers

See the photo attached for the solution.

Find f(0) and f(6)

f(x)= x^2+10x+72/x^2-12x+36

Answers

Answer:

f(0) = 2     f(5) = 147

Step-by-step explanation:

f(0) = (0²+10·0+72)/(0²-12·0 + 36)   Substitute 0 for x and solve.

      = 72/36

       = 2

f(5) = (5²+10·5+72)/(5²-12·5 + 36)      Substitute 5 for x and solve.

     = (25 + 50 + 72)/(25 - 60 +36)

     = 147/1

      = 147

PLEASE HELP WITH THIS ONE QUESTION

Answers

Step-by-step explanation:

thanks for the 5 points

......

the correct written expression for: (9 x 5) + (24 - 9).

Answers

45 + 24 - 9

69 - 9

60

Answer:

Step-by-step explanation:

= 45+ 15

=60

If x=47 , find the measures of angles 1,2 and 3​

Answers

Angle x and 2 are congruent so angle 2 is also 47 degrees.

Angle x and angle 1 are supplementary so angle x and angle 1 adds up to 180 degrees.

180-47=133. Angle 1 is equal to 133.

Angle 1 and angle 3 are congruent as well so angle 3 is also 133 degrees.

GUYS IS THIS CORRECT? CLASS 6 MATHS​

Answers

Answer:

yes these all are correct

I NEED HELP PLEASE!!!

Passing through (7,-2) and perpendicular to the line whose equation is y=1/2x+2

Point slope form=

Slope-intercept form=

Answers

Answer:

yyou slope intrecept is already there

Step-by-step explanation:

2+2=4

Answer:

9x+3y=36

Step-by-step explanation:

boom

Find a polynomial f(x) of degree 4 that has the following zeros. 7, −3, 0, −2

Answers

Answer:

x^4 - 2x^3 - 29x^2 - 42x

Step-by-step explanation:

Equal all the zeros to x then move them over.

x=7,x=-3,x=0,x=-2

x-7,x+3,x+0,x+2

Then multiply each factor

(x-7)(x+3)(x)(x+2)

x^4 - 2x^3 - 29x^2 - 42x

What is the equation of the following line be sure to scroll down first to see all answer options

Answers

Answer:

b

Step-by-step explanation:

mark me as brainliest have a great day

Evaluate the solid bounded by 2x + z = 2 and (x − 1)^2 + y^2 = z. Sketch the given solid.

Answers

Answer:

resuelve la pregunta*

Step-by-step explanation:

tu mamá es mi mamá

For what value of a does
( 1/9) ^a+1 •27^2-a ?

O-4
O-2
O 2
O 6

Answers

>>Exponent

__________

[tex] \: [/tex]

[tex]( \frac{1}{9} ) {}^{a + 1} = {27}^{2 - a} [/tex]

[tex]( {3}^{ - 2} ) {}^{a + 1} = ( {3}^{3} ) {}^{2 - a} [/tex]

[tex] \cancel{ {3}}^{ - 2a - 2} = \cancel{{3}}^{6 - 3a} [/tex]

-2a - 2 = 6 - 3a

-2a + 3a = 6 + 2

a = 8✔

I'm sad

What is 2x9/6+5

Answers

Answer:

8

Step-by-step explanation:

PEMDAS, Parentheses, Exponents, Multiply, Divide, Add, Subtract

First, I multiply, not because it comes first in pemdas, but because you go left to right. So 2x9=18 and then you divide, 18/6=3 and then you add, 3+5=8. If you have any question I will be here!

Directions: Find the slope of the lines graphed below.
1.
2.

Answers

we know,

slope = y_2 - y_1/x_2 - x_1

1.

according to the graph given points are,

(2,1) and (0,3)

now,

→ 3 - 1/0 - 2

→ 2/-2

→ -1

therefore, slope of the given graph is -1.

2.

according to the graph given points are,

(-6,2) and (0,1)

now,

→ 1 - (-6)/0-2

→ 7/-2

→ -3.5

therefore, slope of the given graph is -3.5 OR in fraction form it is 7/-2.

3.

according to the graph given points are,

(2,2) and (0,4)

now,

→ 4 - 2/0-2

→ 2/-2

→ -1

therefore, slope of the given graph is -1.

hope this answer helps you dear...take care and may u have a great day ahead!

1. find the measure of each angle

Answers

Answer:

The equation is 3x -5 + 10x -7 = 180°

Step-by-step explanation:

These angle are a linear pair. Linear pair are two angles that are adjacent and their sides are opposite rays, or the two angles form a straight angle = 180°

The equation is 3x -5 + 10x -7 = 180°

Please help-!! hurry​

Answers

Answer:

180

Step-by-step explanation:

3
Parallel to y = - -*+2 and goes through the point (5, -7)
S
please help it’s due next period

Answers

I’m not even sure hope it helped lol

[tex]\sqrt{108k^{7}q^{8}}[/tex]

Answers

Answer:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

6k^3*q^4√3k

Mrs. Gonzalez bought a puzzle for $10.95, a board game for $15.95, and a table lamp for $17.10. After tax, the total amount due was $46.86. What is the sales tax rate written as a percent? Round to the nearest tenth if necessary.

Answers

Answer:

6.5%

Step-by-step explanation:

15.95+10.95+17.10 = 44

46.86-44 = 2.86

2.86/44 = 0.065

0.065 = 6.5%

which of the following statements are true for sin (-430°)

i. the basic angle, a lies in the second quadrant
Ii. sin (-430°) = +sin (430°)
III. sin (-430°) = sin (70°)
iv. a = 30°​

Answers

Answer:

Step-by-step explanation:

sin(-430)=-sin(430)=-sin(360+70)=-sin 70

Pleaw hurry i nedd the answer

Answers

Number 4 is correct you can check it

If this is the graph of f(x)= a(x+h) +k, then:

Answers

Answer:

The forth one as both are positive  the domain  =  x ascending = + h and the range = y  where y = k the vortex and both include infinity

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Apie

what is the x and y intercept of 18x-3y=15

Answers

Answer:

18(0) -3y = 15

-3y=15

now divide-3 from both sides

y= 15/-3

reduced is -5

y int = (0,-5)

18x-3(0)=15

18x=15

divide the 18 from both sides

x=15/18

reduced is 5/6

x int = 5/6

no links please

Suppose you took out a $120,000 loan to go to med school. Your loan has a 6.9% APR to be paid in 30 years. You make monthly payments of $790.32 – to date, you have made 180 payments. What is the total amount you have left to pay if you simply make payments for the next 180 months?​

Answers

The total amount left to pay is $ 745,945.74.

Supposing you took out a $ 120,000 loan to go to med school. Your loan has a 6.9% APR to be paid in 30 years, and you make monthly payments of $ 790.32, and to date, you have made 180 payments, to determine what is the total amount you have left to pay if you simply make payments for the next 180 months the following calculation must be performed:

(120,000 x 1,069 ^ 30) - (790.32 x 180) = X (120,000 x 7.40) - 142,257.6 = X 888,203.34 - 142,257.6 = X 745,945.74 = X

Therefore, the total amount left to pay is $ 745,945.74.

Learn more in https://brainly.com/question/8846837

Evaluate v(x) = 12 - 2x - 5 when x = -2, 0, and 5

Answers

Answer:

65

Step-by-step explanation:

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