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malfutka [58]
3 years ago
10

The difference of twice a number and 3 is -21 translated

Mathematics
2 answers:
Westkost [7]3 years ago
7 0

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

a_sh-v [17]3 years ago
5 0

Answer:

\Huge \boxed{2x-3=-21}

Step-by-step explanation:

Let the number be x.

The difference of two values is the result from subtracting them.

2x-3=-21

Add 3 to both sides.

2x=-18

Divide both sides by 2.

x=-9

The number is -9.

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The figure is made up of a cylinder and a cone.
Gnoma [55]

Answer:

51*pi or 160.221

Step-by-step explanation:

total volume = volume of a cone + volume of a cylinder

total volume = 1/3* pi*r^2* height(of cone) + pi* r^2 *height(of cylinder)

total volume = 1/3 * pi * 3^2 * 5 + pi * 3^2 * 4

total volume = 51*pi = 160.221

7 0
3 years ago
Find the coordinates of the midpoint of CD if C(-2, 6) and (7, -1)
d1i1m1o1n [39]

Answer:

(2.5, 2.5)

Step-by-step explanation:

Coordinates of midpoint

=  \bigg(  \frac{ - 2 + 7}{2}, \:  \:  \frac{6 - 1}{2}  \bigg) \\  \\  =  \bigg(  \frac{5}{2}, \:  \:  \frac{5}{2}  \bigg) \\  \\  = ( 2.5, \:  \:  2.5  )

8 0
2 years ago
Graph the equation y = x2 + 8x + 12 on the accompanying set of axes. You must
UkoKoshka [18]

Answer:

Step-by-step explanation:

Roots:  set y = x^2 + 8x + 12 = 0 and solve for x:  x + 6 = 0, so x = -6 is one root.  The other is x = -2.  The corresponding points are (-6, 0) and (-2, 0).

y-intercept:  Let x = 0.  Then y = 12.  The y-intercept is (0, 12).

Axis of symmetry:  x = -b / (2a) => x = -8/(2*1) = -4:  x = -4

Vertex y-value:  evaluate y at x = - 4:  (-4)^2 + 8(-4) + 12 = -4:    (-4, -4)

Arbitrarily chosen x value:  x = 1 => 1^2 + 8(1) + 12 = 21:     (1, 21)

The five points are:  (-6, 0) and (-2, 0), (0, 12), (-4, -4), (1, 21).  The vertex is (-4, -4).  The parabolic graph opens UP.

8 0
3 years ago
What is the<br> Greatest<br> Common<br> factor<br> of 36 and 54?
Shkiper50 [21]

Answer:

18 is the answer

Step-by-step explanation:

We know this because The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36

The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54

4 0
3 years ago
Read 2 more answers
Can someone help me please
mart [117]
Your answer is D 6561 multiply each number 3 and your answer will be this
5 0
2 years ago
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