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Arisa [49]
3 years ago
10

Twice the sum of a number and 3 is 20.

Mathematics
2 answers:
tamaranim1 [39]3 years ago
4 0

Answer:

true

Step-by-step explanation:

Nastasia [14]3 years ago
4 0
This is very true
Lol
Oof
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HELLLLPPPP! brainliest!!!<br><br> f = 180° – 50° – =?
Schach [20]

Step-by-step explanation:

f = 180 \degree - 50 \degree = 130 \degree

4 0
3 years ago
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What is the vertex of the quadratic equation y = - 1/3 (x + 2)^2 +5
Wewaii [24]

Answer:

<h2>(-2, 5)</h2>

Step-by-step explanation:

\text{The vertex form of a quadratic equation:}\\\\y=a(x-h)^2+k\\\\(h,\ k)-vertex\\---------------\\\text{We have:}\\\\y=-\dfrac{1}{3}(x+2)^2+5=-\dfrac{1}{3}(x-(-2))^2+5\Rightarrow h=-2\ \text{and}\ k=5\\\\\text{therefore the vertex is:}\ (-2,\ 5)

6 0
3 years ago
∆ABC is translated 2 units down and 1 unit to the left. Then it is rotated 90° clockwise about the origin to form ∆A′B′C′. The c
Ivenika [448]

Answer:

A'(-2, 1), B'(1, 0), C'(-1, 0)

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, reflection, dilation and translation.

If a point X(x, y) is translated a units right and b units down, the new location is X'(x + a, y + b) whereas if a point X(x, y) is translated a units left and b units up, the new location is X'(x - a, y - b).

If a point X(x, y) is rotated 90° clockwise about the origin, the new location is X'(y, -x)

From the image attached, ∆ABC is at A(0, 0), B(1,3) C(1, 1)

If ∆ABC is translated 2 units down and 1 unit to the left (x - 1, y - 2), the vertices would be A*(-1, -2), B*(0, 1), C*(0, -1)

If it is then rotated 90° clockwise about the origin, the new location is A'(-2, 1), B'(1, 0), C'(-1, 0)

7 0
3 years ago
Line CD passes through points (0, 2) and (4, 6). Which equation represents line CD?
Vikentia [17]
(0,2)(4,6)
slope = (6 - 2) / (4 - 0) = 4/4 = 1

y = mx + b
slope(m) = 1
use either of ur points (0,2)...x = 0 and y = 2
sub and find b, the y int
2 = 1(0) + b
2 = b

ur equation is : y = x + 2 <==

8 0
3 years ago
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Gwyneth begins solving for x in the equation 2(x-4)=5(4-2x)+4x.after applying the distributive property and combining like terms
Leya [2.2K]
The answer would be:
8x-4=20-6x
4 0
3 years ago
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