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4 years ago

What is the answer 5x = 3(2x-9)

Mathematics

2 answers:

Lana71 [14]4 years ago

8 0

Answer:

x = 27

Step-by-step explanation:

(Solving steps are shown above in pic.) source: Photomath

elixir [45]4 years ago

6 0

Answer:

x=27

Step-by-step explanation:

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Suppose that we were going to conduct a study to determine if there is an decrease in risk of getting lung cancer based on wheth

nalin [4]

Answer: Option C

Step-by-step explanation:

In group(1), the risk is= 5/2000 x 100

= 0.25

In group(2), the risk is= 5/1000 x 100

= 0.5

The sample relative risk is= 0.25/0.5

= 0.5

So, option C is correct.

7 0

3 years ago

Which ordered pair is a solution of the equation? -x-4y=-10

Makovka662 [10]

Answer:

(2, 2 )

Step-by-step explanation:

To find a solution, choose any value for x, substitute into the equation and solve for y.

Choose x = 2, then

- 2 - 4y = - 10 ( add 2 to both sides )

- 4y = - 8 ( divide both sides by - 4 )

y = 2

Thus (2, 2 ) is a solution to the equation

8 0

3 years ago

Read 2 more answers

D E F Using the Pythagorean Theorem, which of the following is true?

yaroslaw [1]

Answer:

Step-by-step explanation:

5 0

3 years ago

Please answer ✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️

Levart [38]

Step-by-step explanation:

Any known 0 number with exponent 0 is known as undefined

If 2^x = 16, then the value of x is 4

Writing separated multiplication of numbers in short form is called product of powers property

If base is negative and exponent is odd the expression has negative value

True/false:

True

False

True

5 0

3 years ago

find the equation of the sides of an isosceles right angled triangle whose vertex is (-2,-3) and the base is on the line x=0

Serggg [28]

Answer:

AC:y=x-1 CB:y=-x-5 AB:x=0

Step-by-step explanation:

Consider the triangle. The base AB is on the line x=0, the vertex C is (-2,-3)

The side AC is equal to BC. The angle ACB is 90 degrees. If the base is on the line x=o, it is on the axis Y.Explore the distance from the point C to the AB

c(-2,-3), the distance to the axis Y is equal to the modul of the coordinate x (-2), it is 2. The coordinates of point projected by the point C to the axis Y is N(0,-3). The modul of the height is 2, the height of the isosceles triangle to the base is the bisectrix, so the angle BCA is 90/2=45degrees, CBA is 180-90-45=45 degrees too

the heigt CN is equal to side NB, NB=2

Suppose B is (0,y) (x=0 because the base is on this line)

THe modul of the vector NB is equal to sqrt ((0-0)^2+(y+3)^2)= 2

modul (y+3)= 2

y=-1 or y=-5

(0,-1), (0,-5) - two points, one of them (suppose B) is (0,-5) when A is (0,-1) (A is remote from the point N on the same distance with B, because AB is the median too)

Find CB and AC

Use the equation for AC

(x-0)/(-2-0)= (y+1)/(-3+1)

x/-2= (y+1)/-2

x=y+1

y=x-1

For CB

(x-0)/ (-2-0)= (y+5)/ (-3-(-5))

x/-2= (y+5)/2

-x=y+5

y=-x-5

7 0

3 years ago