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meriva
3 years ago
8

I need urgent help with this one

Mathematics
2 answers:
dolphi86 [110]3 years ago
6 0

Answer:

0.6

Step-by-step explanation:

-1 1/2 + 2.1 = 0.6

Serhud [2]3 years ago
5 0

let the unknown answer be equal to f

.-2.1 - f = -3/2

-f = -3/2 + 2.1

-f = 0.6

f = -0.6

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⊙O and ⊙P are given with centers (−2, 7) and (12, −1) and radii of lengths 5 and 12, respectively. Using similarity transformati
goldenfox [79]

Answer:

Whereby circle \bigodotP can be obtained from circle \bigodotO by applying the transformations of a translation of T₍₁₄, ₋₈₎ followed by a dilation by a scale factor of 2.4, \bigodotO is similar to \bigodotP

Step-by-step explanation:

The given center of the circle \bigodotO = (-2, 7)

The radius of \bigodotO, r₁ = 5

The given center of the circle \bigodotP = (12, -1)

The radius of \bigodotP, r₂ = 12

The similarity transformation to prove that \bigodotO and \bigodotP are similar are;

a) Move circle \bigodotO 14 units to the right and 8 units down to the point (12, -1)

b) Apply a scale of S.F. = r₂/r₁ = 12/5 = 2.4

Therefore, the radius of circle \bigodotO is increased by 2.4

We then obtain \bigodotO' with center at (12, -1) and radius r₃ = 2.4×5 = 12 which has the same center and radius as circle \bigodotP

∴ Circle \bigodotP can be obtained from circle \bigodotO by applying similarity transformation of translation of T₍₁₄, ₋₈₎ followed by a dilation by a scale factor of 2.4, \bigodotO is similar to \bigodotP.

7 0
3 years ago
Number 3 and how you got the answer
melomori [17]
You have the correct steps and final answer. The area of the room is 196 square feet, so each side is sqrt(196) = 14. The perimeter is 14*4 = 56 feet. You'll need 6 boards (each 10 ft long) to get 60 ft total. You'll have 60-56 = 4 ft of board left over. This is assuming that there isn't any other type of waste or mistakes made in cutting. 

Nice work on getting the correct steps and final answer.
8 0
3 years ago
Find the area of the trapezoid
valkas [14]

6, because the formula for funding area of a trapezoid is base 1 plus base 2 times the height divided by 2. So you plug that in and get [(6+2)4]÷2.

3 0
3 years ago
Find the equation of the line. Use exact numbers.<br> y = __x + __
rewona [7]

Answer:

y   = 3x+3

Step-by-step explanation:

We know the y intercept since it crosses the y axis at (0,3) and we know the x intercept since it crosses the x axis at (-1,0)

We can fidn the slope

m = (y2-y1)/(x2-x1)  (0,3) (-1,0)

     =(0-3)/(-1-0)

     = -3/-1

      =3

The equation for the line is in the form

y = mx +b where m is the slope and b is the y intercept

y   = 3x+3

7 0
3 years ago
If f(x) = 4x + 3 and g(x) = 3x, evaluate for X = -1/2
miskamm [114]

Answer:

 f(-\frac{1}{2}) = 1

g(-\frac{1}{2} ) = -\frac{3}{2}

Step-by-step explanation:

Given the function f(x) = 4x + 3 and the function g(x) = 3x, to evaluate for x=-\frac{1}{2}, you need to substitute it into each function.

Then, for the function f(x), when  x=-\frac{1}{2}, you get:

 f(-\frac{1}{2}) = 4(-\frac{1}{2}) + 3

 f(-\frac{1}{2}) = 4(-\frac{1}{2}) + 3

 f(-\frac{1}{2}) = -\frac{4}{2}+ 3

 f(-\frac{1}{2}) = -2 + 3

 f(-\frac{1}{2}) = 1

For the function g(x), when  x=-\frac{1}{2}, you get:

g(-\frac{1}{2} ) = 3(-\frac{1}{2})

 g(-\frac{1}{2} ) = -\frac{3}{2}

4 0
3 years ago
Read 2 more answers
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