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ddd [48]
3 years ago
14

Solve for d: d + 9 = 15 show work please

Mathematics
2 answers:
oksian1 [2.3K]3 years ago
5 0

Answer:

6

Step-by-step explanation:

First, subtract 9 on both sides:

d+9-9=15-9

d=6

Hope this helped!

yKpoI14uk [10]3 years ago
4 0

Answer:

6 + 9 = 15

Step-by-step explanation:

d + 9 = 15, you take 15 and substract it by 9 so you can get 6

15 - 9 = 6

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3 years ago
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Find the value of x.<br> 43°<br> X<br> x = [?]°
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The opposite sides are supplementary
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3 years ago
1. round the result to 2 decimal places. -0.9x+2.8=4.1
lora16 [44]
1. <span>-0.9x+2.8=4.1
First subtract 2.8 from both sides.
-0.9x = 1.3
Now divide both sides by -0.9.
x = -1.4444..
This can be rounded to -1.44
</span><span>c) -1.44

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3 years ago
Find the area of ABC with vertices A(3,-6), B(5,-6), and C(7,–9).
stellarik [79]

Area of a triangle ABC with the given vertices is 3 square units.

Given that, the vertices of a triangle ABC, A(3,-6), B(5,-6), and C(7,–9).

<h3>What is the area of triangle formula in coordinate geometry?</h3>

In Geometry, a triangle is a three-sided polygon that has three edges and three vertices. The area of the triangle is the space covered by the triangle in a two-dimensional plane.

Area of a triangle = \frac{1}{2} ( |x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2)|)

Here, (x1, y1) = A(3,-6), (x2, y2) = B(5,-6), and (x3, y3) = C(7,–9)

Now, the area of a triangle = 1/2 (|3(-6+9)+5(-9+6)+7(-6+6)|)

= 1/2 (|3(3)+5(-3)+7(0)|)

= 1/2 (|(9-15)|)

= 1/2 × 6

= 3 square units

Therefore, area of a triangle ABC with the given vertices is 3 square units.

To learn more about the area of a area of triangle with vertices visit:

brainly.com/question/26633662.

#SPJ1

7 0
1 year ago
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