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Solnce55 [7]
2 years ago
8

Expand and simplify (2c+1)(2c+3)

Mathematics
1 answer:
Mandarinka [93]2 years ago
6 0
The answer would be 4c^2+8c+3

The arrow stands for squared off you didn’t already know but these are very easy to solve because you just multiply it out
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Which equation is true when the value of x is -127
notsponge [240]
Hbshsheheuwjjwhwegwhehheueh
7 0
2 years ago
Which is a graph for the inequality x ≥ 2? HELP I WILL GIVE BRAINIEST
Svetach [21]

Answer:

B

Step-by-step explanation:

x has to be larger than 2 so the arrow has to point to the right.

The value 2 is included, so the start has to be a closed dot.

3 0
2 years ago
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If the measure of base angle ABC is 75°, what is m∠BAC?
Rudik [331]
B 
isos triangle means 2 sides are = 
Ignore the image most images are not to scale
one angle is 75 so another is 75. 75*2 =150
180-150 =30
3 0
3 years ago
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The line CD passes through the points C (2, -1) and D (1, 1). Which of the
inn [45]

Answer:

<em>The equation of the straight line in point - slope form</em>

<em>y +1 = -2 ( x-2)</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given points are C( 2,-1) and D(1,1)

Slope of the line

     m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  } = \frac{1-(-1)}{1-2} = \frac{2}{-1} = -2

   m = -2

<u>Step(ii):-</u>

Equation of the straight line passing through the point ( 2,-1) and having slope

m =-2

y - y₁ = m ( x- x₁)

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

y +1 = -2 ( x-2)

<u><em>Final answer:-</em></u>

<em>The equation of the straight line</em>

<em>y +1 = -2 ( x-2)</em>

3 0
2 years ago
Please help meeeeeeeeeee
mixas84 [53]

Answer:

x=72

y=54

Step-by-step explanation:

1st question. y=54 because it is a bisector of the 108 degree angles. (a polygon's interior angles add to number of sides minus 2 times 180)

There are two ys, so they add up to 108. A triangle's interior angles add to 180. 180-108 =72 x=72

2nd question, x is 72 ( it says x is the same measure) so 180-72=2y.

y still equals 54

4 0
3 years ago
Read 2 more answers
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