Solve the simultaneous equations
2y - 5x = 9
4y + 3x = 5
Do not use trial and improvement

'I hope my answer helps you'

Question: y = 3cos[6(x-4)] - 5

Answer: 3

Step-by-step explanation:

The reason for this is in order to find amplitude, it's always the number before "cos" or "sin". Also, the "[6(x-4)]" was just a distraction to throw you off

Here's a trick to find everything; amplitude, period, phase sift, etc.:

      y = A sin(B(x + C)) + D

* amplitude is A

* period is 2π/B

* phase shift is C (positive is to the left)

* vertical shift is D

Answer:

Sum of Interior Angles = (Number of Sides -2) • 180 degrees

Sum = (12 -2) * 180

Sum of the interior angles = 1,800 degrees

Source:  http://www.1728.org/polygon.htm

Step-by-step explanation:

Hey there!

The answer is [tex]9[/tex]

We will start by forming an equation to solve this.

So we are starting with a number, [tex]x[/tex], then doubling it and adding [tex]7[/tex], which gives us 25.

So:

[tex]2x+7=25[/tex]

Now we solve this equation:

[tex]2x+7=25[/tex]

[tex]2x=18[/tex]

[tex]x=9[/tex]

Have a super awesome day!

Answer:

X = 9

Step-by-step explanation:

If you take 9, then double it, you get 18. 9+9 = 18. Then, you would add 7. 18 plus 7 is 25.

Hence, the answer to this problem is 9.

Answer:

hello

Step-by-step explanation:

i think diameter is 13 cm

but radius is equal to 13/2=6,5cm

hope it helps

have a nice day

bye

Answer: 1.09375

Step-by-step explanation:

35÷32 is already in the simplest form. It can be written as 1.09375 in decimal form (rounded to 6 decimal places).

Step-by-step explanation:

Radius (r) = 2 ft

V = 4/3 × 22/7 × (2)³

= 4/3 × 22/7 × 8

= 33.52 ft³

Answer:

TWU is congruent to WUV

Step-by-step explanation:

Answer:

0.75

Step-by-step explanation:

4 + 5=9

√(9)=3

3 ÷ 4 =  0.75

Answer:

C. 7.9 + x

Step-by-step explanation:

Given - A. 7.9x  B. 7.9 · (-10)  C. 7.9 + x  D. - 79

To find - Which expression doesn't belong? Why does it not belong?

Proof -

As given

A.  7.9x

B. 7.9·(-10)

C. 7.9 + x

D. -79

As we can see that Option A, B, D are the multiple of 7.9 but Option C is not the multiple of 7.9

So, Option C does not belong here.

∴ we get

The correct answer is - C. 7.9 + x

9514 1404 393

Answer:

  t = ±√3

Step-by-step explanation:

The first equation tells us ...

  x^2 +tx +2 = (x -h)(x -k)

 x^2 +tx +2 = x^2 -(h+k)x +hk

Comparing coefficients, we have the equations ...

  t=-(h+k)

  2 = hk

__

The second equation tells us ...

  2x^2 +mx +2m = 2(x -h/k)(x -k/h)

  2x^2 +mx +2m = 2x^2 -2(h/k +k/h)x +2

Comparing coefficients, we have the equations ...

  m = -2(h/k +k/h)

  2m = 2

__

Dividing the last equation by 2 gives ...

  m = 1

Using that in the third equation, we have ...

  1 = -2(h/k +k/h) = -2(h^2 +k^2)/hk

Using hk = 2, this gives us ...

  h^2 +k^2 = -1

From the first equation, we know ...

  t^2 = (-(h+k))^2 = h^2 +2hk +k^2 = (h^2 +k^2) +2(hk)

Substituting the values for these terms, we have ...

  t^2 = -1 + 2(2) = 3

  t = ±√3

Possible values of t are √3 and -√3.

Answer:

The correct answer is B

Step-by-step explanation:

-3,-4

Coordinates of M are (-3, -4) as LMNP rotates 180° clockwise.

" Clockwise rotation means when any object is moving in the direction of hands of clock."

According to the question,

As per the diagram ,

Coordinates of M are ( 3, 4)

Rotation of a point through 180° about the origin when a point M( x, y) is rotated about the origin through 180° in anticlockwise or clockwise direction, it takes the new coordinates ( -x ,-y).

Therefore , coordinates of M are ( -3, -4).

Hence, coordinates of M are (-3, -4) as LMNP rotates 180° clockwise.

Learn more about clockwise rotation here

https://brainly.com/question/14701550

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Area of flower garden is 39.9 square feet

Solution:

Given that, flower garden in the shape of a parallelogram

The length of the base of the garden is 9.5 feet and the height is 4.2 feet

To find the area of a parallelogram, multiply the base by the height

The formula for area of parallelogram is:

 From given,  

Base = 9.5 feet

Height = 4.2 feet  

Substituting the values in formula,

Thus area of flower garden is 39.9 square feet

(hope this helps can i plz have brainlist :D hehe)

Answer:

D

Step-by-step explanation:

A=bh

A=(9.5)(4.2)

A=39.9 ft

Answer: 10

Step-by-step explanation:

80/100 of 10

0.8 × 10 = 8

8 is 80% of 10

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100.

To find a number such that, it's 80% is 8.

Let the number be x

80%x =8

This forms an equation in one variable which can be solved by transposition.

[tex]80x/100=8[/tex]

On multiplying 100 both sides,

[tex]80x=800[/tex]

On dividing 80 both sides,

x=10

Thus,  80% of 10 is 8.

Learn more about percentage, here:

https://brainly.com/question/16797504

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Answer:

it would be -1, 4

-1 x 5 = -5 and 2 x 4 = 8 so -5 + 8  = 3

-1 x 3 = -3 and 2 x 4 = 8 so -3 + 8 = 5

Answer: They are being multiplied by 2 each time

Step-by-step explanation:

2x2=4 4x2=8 8x2=16 16x2=32  

Answer:

They are being multiplied by 2 each time

Step-by-step explanation: hope it helps ^w^

Answer:

3/6 cups have a great day!!

Answer:

A

Step-by-step explanation:

I took the test now that is what I got.

Hope this helps.

The function that represents the amount of radioactive substance left after {x} hours is : f(x)=100(0.15)ˣ.

Given is that the amount of a certain radioactive substance decreases by 15% every hour. A sample starts with 100 g of this radioactive substance.

The function that represents the amount of radioactive substance left after {x} hours is -

f(x)=100(0.15)ˣ

Therefore, the function that represents the amount of radioactive substance left after {x} hours is : f(x)=100(0.15)ˣ.

To solve more questions on algebraic expressions, visit the link below-

brainly.com/question/1041084

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Answer:

i believe it would be 0.79b + 3.59c [tex]\leq[/tex] 100

Step-by-step explanation:

the price of the number of cans of beans added to the number of boxes of cereal must be less than or equal to $100

0.79b represents the price of the beans multiplied by the amount of cans the contestant buys, and 3.59c represents the price of the cereal multiplied by the amount of boxes the contestant buys

Answer:

2,960.00

Step-by-step explanation:

5000x7.4x8=2,960.00

hope this helps

Answer:

− 4x + 12

ENJOY...

Step-by-step explanation:

Answer:

12 - 4x

Step-by-step explanation:

Distribute the 4 to both terms within the parentheses:

4(3 - x)

4*3 - 4*x

12 - 4x

This is called the expanded form, while 4(3 - x) is called the factored form of this expression.

Hope this helps!! :)

Answer:

31/90 is the prob.

Step-by-step explanation:

sorry if this is incorrect :9

ty for reading :9

Step-by-step explanation:

1. 5 1/4 = 21/4

21/4 ÷ 3/4 = 7/4

2. 7 1/2= 15/2

15/2 ÷ 1/4 = 1.875

3. 3 2/5 = 17/5

17/5 ÷ 2/7 = 0.24

Answer:

(x+2)(x-2)

Step-by-step explanation

x times x equals x^2, 2 times x equals 2x, -2 times x equals -2x, and 2 times -2 equals -4. If you add that up, the x-values cancel out, leaving the x^2 and the -4. (This explanation is working it backwards which is the easiest way IMO)

Answer:

13/12

Step-by-step explanation:

Answer:

12/13

Step-by-step explanation:

remember it's adj/hyp so it would be 36/39. When simplified it becomes 12/13.

Answer:

true

Step-by-step explanation:

Answer:

False

Step-by-step explanation: