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Iteru [2.4K]
3 years ago
12

X² + 6x – 27=0 What is the answer for this question

Mathematics
2 answers:
Tju [1.3M]3 years ago
7 0
(x+9)(x-3)=0
x = 3,-9
muminat3 years ago
6 0
The answer is X1=-9,X2=3
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Jem boy wants to make his 8-meter square pool into a rectangular one by increasing its length by 2m and decreasing its width by
butalik [34]
Side = 8m
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(a.) New dimensions will be -
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 here we will use the special product (x+y) (x-y)
length = (x+y) and width = (x-y)
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3 0
3 years ago
18. What's 7?8 as a decimal? A. .78 B. 8.7 C. .875 D. 7.8
kenny6666 [7]

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3 years ago
What is the height of the triangle? 12 units 24 units 36 units 72 units.
konstantin123 [22]

Height of the triangle is the altitude of the triangle and which is drawn perpendicular from the vertex of the triangle to the opposite side. The height of the tringle is 24 units. Hence option 2 is the correct option.

<h3>Given information-</h3>

The triangle for the given problem is shown in the image below.

Form the figure the length of the each side is 16 \sqrt{3} units.

As all the sides are equal thus the \Delta MNO is a equilateral triangle in which the height of the divides the triangle into two equal part of the length 8\sqrt{3} at point <em>R.</em>

<h3>Height of the triangle-</h3>

Height of the triangle is the altitude of the triangle and which is drawn perpendicular from the vertex of the triangle to the opposite side.

Now in the  \Delta MRN, the length of the hypotenuse is 16 \sqrt{3} units and the length of the base is 8\sqrt{3} units. Let <em>h </em>is the height of the triangle thus by the Pythagoras theorem,

(16\sqrt{3})^2 =(8\sqrt{3})^2+h^2

Solve for <em>h,</em>

<em />

<em />\begin{aligned}h^2 &=(16\sqrt{3})^2 -(8\sqrt{3})^2\\h^2 &=16\times16\times3 -8\times8\times3\\h^2 &=576\\h &=\sqrt{576}\\h &=24\\\end<em />

<em />

Thus the height of the tringle is 24 units. Hence option 2 is the correct option.

Learn more about the equilateral triangle here;

brainly.com/question/4268382

5 0
2 years ago
Which of the following ratios is equivalent to 12/15​
Mnenie [13.5K]

4/5 because 12/15 was simplified using 3.

6 0
3 years ago
PLLZZ HELPP!!<br> Which graph shows a curve with exactly one axis of symmetry?
AleksandrR [38]

Answer:

the first picture shows the curve of a axis of symmetry

4 0
3 years ago
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