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faust18 [17]
4 years ago
9

I need help please

Mathematics
2 answers:
Dima020 [189]4 years ago
6 0

It's either A or D.

erica [24]4 years ago
6 0

Answer:

-r^2+5r+6

Step-by-step explanation:

The parentheses are there to mess you up, ignore them. Combine like terms, 2 r^2 + (-3) r^2

r + 4r

-1 + (-5)

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Mandarinka [93]
The correct answer is B.)
5 0
3 years ago
Calculate each sum 2and3/8 + 5 and 1/4=
Ray Of Light [21]

Answer:

Sum of 2 3/8 + 5 1/4 = 7 5/8

8 0
4 years ago
Which is the correct calculation of the y-coordinate of point A? 0 (0 - 0)2 + (1 - y2 = 2 O (0 - 1)² + (0- y2 = 22 (0-0)² + (1 -
dimaraw [331]

Answer:

The y-coordinate of point A is \sqrt{3}.  

Step-by-step explanation:

The equation of the circle is represented by the following expression:

(x-h)^{2}+(y-k)^{2} = r^{2} (1)

Where:

x - Independent variable.

y - Dependent variable.

h, k - Coordinates of the center of the circle.

r - Radius of the circle.

If we know that h = 0, k = 0 and r = 2, then the equation of the circle is:

x^{2} + y^{2} = 4 (1b)

Then, we clear y within (1b):

y^{2} = 4 - x^{2}

y = \pm \sqrt{4-x^{2}} (2)

If we know that x = 1, then the y-coordinate of point A is:

y = \sqrt{4-1^{2}}

y = \sqrt{3}

The y-coordinate of point A is \sqrt{3}.  

4 0
3 years ago
Find the measure of angle t
natima [27]

\huge \tt \color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }

\large\underline{  \boxed{ \sf{✰\:Important\: point's }}}

  • ➢Given two lines are intersecting lines
  • ➢ as it's clearly known when two or more lines meet each other at a specific points is said to be as intersecting lines nd they must be having a common point
  • ➢Here angle t and angle 120⁰ forms adjacent angles
  • and sum sum of adjacent angles is 180⁰

{ \rule{70mm}{2.9pt}}

\underline{  \boxed{ \sf{✵\: let's\: solve\:✵}}}

\sf ➛\angle \: 120 \degree + \angle \:t  = 180\degree \\   \sf ➛\angle  \:t = 180 \degree -   \angle \:120 \degree \\   \sf ➛\angle \: t =  \:60 \degree

{ \rule{70mm}{2.9pt}}

\boxed{✛\underline{  \boxed{ \sf{ \: \angle \: t = 60 \degree  \: }}}✛}

Hope it helps !

5 0
2 years ago
the sum of three times a number and 2 less than 4 times the same number is 15. which of the following equations could be used to
Ulleksa [173]
To solve for a number x,

3x+4x-2=15
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or x=~2.43

was one of your answer choices either of the first two equations?
4 0
3 years ago
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