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3 years ago

Please help!!!! Ik this is easy but I cant think correctly rn

Mathematics

2 answers:

olasank [31]3 years ago

6 0

Answer:

Lol i get like that too. This is 10

Step-by-step explanation:

4+5=9

1/2+1/2=1

9+1=10

pychu [463]3 years ago

3 0

The answer is 10 because 4.5+5.5 is 10

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translate into an algebraic expression: b is decreased by 40% and decreased again by 40% . What is the result ?

MrMuchimi

Answer:

The result is 0.36b

Step-by-step explanation:

Here. we want to translate the wordings into an expression of algebra.

Firstly, we decrease b by 40%

40% is same as 40/100 = 0.4

So decreasing b by 40% = b-0.4(b) = b-0.4b = 0.6b

Now we want to decrease 0.6b by another 40%

= 0.6b -0.4(0.6b)

= 0.6b - 0.24b

= 0.36b

6 0

3 years ago

The equation of the known circle is x^2+y^2-4x-4y+4=0, and the two tangents passing through the point (4 , 2) and the point (4/5

Nutka1998 [239]

Answer:

Answer:

4x - 3y = 0

Step-by-step explanation:

The angle between the radius and the

tangent at P is right

The equation of a line in slope-intercept

form is

y = mx + c ( m is the slope and c the y-

intercept)

Rearrange 4y + 3x = 25 into this form

Subtract 3x from both sides

4y = - 3x + 25 ( divide all terms by 4)

y = -- 3 x + 25 + in slope-intercept form

with slope m

Given a line with slope m then the slope

of a line perpendicular to it is

= -

m perpendicular

* = 4, thus

y = 4 x+c+ is the partial equation

To find c substitute P(3, 4) into the partial

equation

4 = 4 +C+c= 4-4 = 0

y = { x + equation of radius in slope-

intercept form

Multiply through by 3

3y = 4x ( subtract 3y from both sides )

4x - 3y = 0 + equation of radius in

standard form

5 0

2 years ago

Solve the system restrictions by graphing if there is no solution or an infinite number solutions so state you set notation to e

Bingel [31]

Answer:

(x, y) = (4, 16)

Step-by-step explanation:

The first equation is a proportion, so you know right away that (0, 0) is on the graph. Pick any value you like for x, and y will be 4 times that. So, for example, the point (5, 20) will also be on the graph of y=4x.

The second equation has a y-intercept of 20 and a slope of -1. So, however many unit to the right of the y-axis you choose to go, the y-value will be down that number of units from 20. In addition to (0, 20), the point (5, 15) will be on the graph of y = -x+20.

Personally, I like to use a graphing calculator to show the graphical solution.

Here, the solution is (x, y) = (4, 16).