if you can answer any of these please do and put the question number by the answer

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{k = 3}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{4.5 + 1.5k = 18 - 3k}[/tex]

Move 3k to left hand side and change it's sign

Similarly, move 4.5 to right hand side and change it's sign

[tex] \longrightarrow{ \sf{1.5k + 3k = 18 - 4.5}}[/tex]

Collect like terms

[tex] \longrightarrow{ \sf{4.5k = 18 - 4.5}}[/tex]

Subtract 4.5 from 18

[tex] \longrightarrow{ \sf{4.5k = 13.5}}[/tex]

Divide both sides by 4.5

[tex] \longrightarrow{ \sf{ \frac{4.5k}{4.5} = \frac{13.5}{4.5} }}[/tex]

Calculate

[tex] \longrightarrow{ \sf{k = 3}}[/tex]

Hope I helped!

Best regards! :D

Answer:

k = 3

Step-by-step explanation:

Subtract 4.5 from both sides:

4.5 + 1.5k = 18 - 3k

-4.5            -4.5

1.5k = 13.5 -3k

Subtract -3k from both sides:

1.5k = 13.5 - 3k

+3k             +3k

4.5k = 13.5

Now simplify:

4.5k = 13.5

k = 3

Answer:

1.    x = 1, y = 2.

12.  x = 1, y = -3.

Step-by-step explanation:

I won't do all these for you, just the first and the last. The method is similar  for all 12.

1.

y = x + 1

x + y = 3

Substitute y = x + 1 into the second equation:

x + y = 3 so:

x + (x + 1) = 3

2x + 1 = 3

2x + 1 -1 = 3 - 1

2x = 2

x = 1.

Now substitute x = 1 into the first equation to get the value of y:

y = x + 1

y = 1 + 1

y = 2.

12.

4x = y + 7

3x + 4y + 9 = 0

Solve for y in the first equation:

4x = y + 7                Subtract 7 from both sides of the equation:

4x - 7 = y + 7 - 7

y = 4x - 7.

Now substitute  y = 4x - 7 in the second equation:

3x + 4y + 9 = 0   so:

3x + 4(4x - 7) + 9 = 0

3x + 16x - 28 + 9 = 0

19x - 19 =  0

19x - 19 + 19 = 0 + 19

19x = 19

x = 19/19 = 1.

Now substitute x = 1 in the first equation:

4x = y + 7

4*1 = y + 7              Subtract 7 from both sides of the equation:

4 - 7 = y + 7 - 7      

-3 = y.

Step-by-step explanation:

9x² + 6 = 12x

3x² + 2 = 4x

3x² − 4x + 2 = 0

Use quadratic formula.

x = [ -b ± √(b² − 4ac) ] / 2a

x = [ -(-4) ± √((-4)² − 4(3)(2)) ] / 2(3)

x = [ 4 ± √(16 − 24) ] / 6

x = [ 4 ± √(-8) ] / 6

x = (4 ± 2i√2) / 6

x = (2 ± i√2) / 3

Step-by-step explanation:

Area of a parallelogram=base×height

=10×4

=40cm^2

The area of the parallelogram is 40 square cm if the parallelogram has a base of 10 centimeters and a height of 4 centimeters.

In two-dimensional geometry, it is a plane shape having four sides, in which two pairs of sides are parallel to each other and equal in length. The sum of all angles in a parallelogram is 360°.

It is given that:

A parallelogram has a base of 10 centimeters and a height of 4 centimeters.

As we know:

Area of a parallelogram = base×height

Area of a parallelogram = 10×4

Area of a parallelogram = 40 square cm

Thus, the area of the parallelogram is 40 square cm if the parallelogram has a base of 10 centimeters and a height of 4 centimeters.

Learn more about the parallelogram here:

brainly.com/question/1563728

#SPJ2

Answer:

Graph 1    

Discrete graph on a coordinate plane shows number of math questions, numbered 1 to 8 along the horizontal axis, and total homework time, numbered 5 to 40, on the vertical axis. Solid circles appear at points (0, 10), (1, 13), (2, 15), (3, 19), (4, 22), (5, 25), (6, 29), (7, 32), (8, 34).

Answer:

b= 2a/h

Step-by-step explanation:

The new measurement can be obtained by the formula b = 2A/h the answer is b = 2A/h

In terms of geometry, the triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.

We have:

Charlie runs a screen printing company and is resetting a machine he uses to print triangular banners.

Given:

A = bh/2

Make subject as b

2A = bh

b = 2A/h

Thus, the new measurement can be obtained by the formula b = 2A/h the answer is b = 2A/h

Learn more about the triangle here:

brainly.com/question/25813512

#SPJ2

Answer:

(25x2 + 4y2) (5x + 2y) (−5x + 2y)

Step-by-step explanation:

Factor 16y4−625x4

−625x4 + 16y4

=(25x2 + 4y2) (5x + 2y) (−5x + 2y)

Answer: (4y^2+25x^2)(2y+5x)(2y-5x)

Step-by-step explanation: I just did it and got it correct.

I think option for the (D)

Answer:

90 degrees

Step-by-step explanation:

Answer:

The angle of AEF is 90°.

Step-by-step explanation:

Given that DEF is an equilateral triangle so all angles are the same which is 60° and in a regular square, all angles are 90°. Next, we have to find ∠ADE :

∠EDF = 60° / ∠CDF = 180° / ∠CDA = 90°

∠ADE = 180° - ∠EDF∠CDA

∠ADE = 180° - 60° - 90°

∠ADE = 30°

Given that ADE is an isosceles triangle so ∠ADE and ∠AED have the same angles. Lastly, we have to find ∠AEF by adding ∠AED and ∠DEF together :

∠AED = 30° / ∠DEF = 60°

∠AEF = ∠AED + ∠DEF

∠AEF = 30° + 60°

∠AEF = 90°

Answer:

IT'S B,D, AND F.

Step-by-step explanation:

i took the quiz and it was right ;)

Answer:

good luck :P

Step-by-step explanation:

Answer:

1. 7

2. 6

Step-by-step explanation:

An inverse additive is a number that when added to its additive inverse equals 0. So, in this case -7 +7 = 0 and -6 +6 = 0.

Answer:

8, 10, 12

Step-by-step explanation:

Because they are even there is a whole number x so that (1st)2x, (2nd) 2x+2, and (3rd)2x+4 are the 3 consecutive integers.

so

If the third is 8 less than twice the 2nd then:

 3rd   = 2 (2nd) - 8

2x + 4 = 2 (2x+2) - 8

2x + 4 = 4x + 4 - 8

2x + 4 = 4x - 4         Add 4 to each side

2x + 4 + 4 = 4x - 4 + 4

2x + 8 = 4x    Subtract 2x from each side

2x - 2x + 8 = 4x - 2x

8 = 2x         Divide each side by 2

8/2 = 2x/2

8/2 = x

4 = x

No we plug into our equations to find the integers.

2x = 2(4) = 8    

2x + 2 = 2(4) + 2 =  8 + 2 = 10              

2x + 4 =  2(4) + 4 =  8 + 4 = 12

So our integers are 8, 10, 12

Answer:

9.9 meters

Step-by-step explanation:

7.5+2.4=9.9 meters

Answer:

c

Step-by-step explanation:

$376.35 / 4 does equal to $94.0875 but when it comes to money, it should be rounded to the nearest cent being $94 and .08 cents.

Answer: h<2

Step-by-step explanation:

Answer: X=1

Step-by-step explanation:

2( x+1) +4=8

2x+2+4=8

2x+6=8

2x=8-6

2x=2

Divide both sides by 2

x=1

~~~~Inuola1234

lmk if you need me to explain further

Answer:

x=1

Step-by-step explanation:

Answer: 59

Step-by-step explanation:

Answer:

It is 50

Step-by-step explanation:

Answer:

32 milimeters

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

(8)/4+(8)(6)

2+48

50

Answer:

Step-by-step explanation:

8/4 + (8)(6)

2 + 48 = 50

Answer:

Angle of CBD is 34 degrees

Step-by-step explanation:

[tex]Angle CBD + 45 = 79[/tex]

Subtract 45 on both sides

AngleCBD = 34

Answer:

B. 16

Step-by-step explanation:

A. 4

B. 16

C. 36

D.64

Answer:

Second one is -30, 20, -50

Third one is 30, 24, 6

Step-by-step explanation:

Answer:

-30,20,-50

30,24,6

R2+R3-R3

0,44,-44

Step-by-step explanation:

i just did it thats the answers to all of the question after the first question too

Answer:

x=-11

Step-by-step explanation:

-2(x+3)+5x=-39

Remove parenthesis

-2x-6+5x=-39

Collect like terms

3x-6=-39

Move the constant to the right

3x=-39+6

Calculate

3x=-33

Divide both sides by 3

x=-11