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fredd [130]
3 years ago
15

I’m stuck on this problem help

Mathematics
1 answer:
Anika [276]3 years ago
8 0
An easy way to think of this when you solve this, is to remember that all the angles in a triangle add up to 180 degrees. Therefore, the equation would be
(3x + 10) + (2x + 10) + 45 = 180. By the way, since the angles D and B are across from each other they are congruent. Now, let’s start solving it:
(3x + 10) + (2x + 10) + 45 = 180
(5x + 20) + 45 = 180
5x + 65 = 180
5x = 115
x = 23
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butalik [34]

Answer:

y-intercept: (0,-3)

Step-by-step explanation:

  • Y-intercepts mean that the x-value has to be equal to 0. When plugging in 0 for the x-value, we receive:

  • 2(0)-3y=9\\0-3y=9\\-3y=9\\y=\frac{9}{-3} \\y=-3

  • Therefore, the point is (0,-3).
6 0
2 years ago
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Square ABCD is located on a coordinate plane. The coordinates for three of the vertices are listed below.
Marrrta [24]

Answer:

B'(16,14)

Step-by-step explanation:

First find the coordinates of the vertex B. The center of the square M is the midpoint of the diagonal AC. Since A(2,7) and C(8,1), the center has coordinates

M\left(\dfrac{2+8}{2},\dfrac{7+1}{2}\right)=M(5,4).

Point M is also the midpoint of the diagonal BD. Let B has coordinates (x,y), then

\dfrac{x+2}{2}=5\Rightarrow x=8,\\ \\\dfrac{y+1}{2}=4\Rightarrow y=7.

Hence, B(8,7).

Now, the dilation by a scale factor 2 with the center of dilation at the origin has the rule

(x,y)→(2x,2y).

Thus,

B(8,7)→B'(16,14).

8 0
3 years ago
5x + 9 = 10x - 9<br> How do I solve this?
dangina [55]
5x+9 = 10x-9
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9 = 5x-9
Add 9 to both sides
18 = 5x
Divide by 5
3.6=x
6 0
3 years ago
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Ksenya-84 [330]

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actually its A... i know cause i got it WRONG

Step-by-step explanation:

5 0
1 year ago
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marusya05 [52]

Answer:

89%

Step-by-step explanation:

First find the total houses

890+110=1000 houses total

out of the 1000, 890 were for sale

so 890/1000 divide by 100

8.9/10

or 89%

4 0
3 years ago
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