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3 years ago

What is the chemical formula for the coumpound formed from Mg^2+ and Cl-?

Mathematics

1 answer:

NikAS [45]3 years ago

7 0

Answer:

MgCl₂

Step-by-step explanation:

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ABC with altitude \overline{BD}

just olya [345]

The length of $\overline{AC}$ is given by the relationship between the similar triangles

ΔABD and ΔBDC.

$\overline{AC}$ = <u>80</u>

Reasons:

The given parameters are;

The altitude of triangle ΔABD = $\overline {BD}$

The hypotenuse of formed right triangle = $\overline {AC}$

The length of AD = 8

Length of BD = 24

Whereby ΔABD is a right triangle

We have;

ΔABD is similar to ΔBDC

Therefore, by similar triangle proportional sides relationship, we have;

$\displaystyle \frac{\overline{AD}}{\overline{BD}} = \mathbf{ \frac{\overline{BD}}{\overline{DC}}}$

Which gives;

$\overline{BD}^2$ = $\mathbf{\overline{DC} \times \overline{AD}}$

Therefore;

$\displaystyle \overline{DC} = \mathbf{\frac{\overline{BD}^2}{\overline {AD}}}$

$\displaystyle \overline{DC} = \frac{24^2}{8} = \mathbf{72}$

$\overline{AC} = \overline{DC} + \overline{AD}$

Which gives;

$\overline{AC} = 72 + 8 =\mathbf{ 80}$

Learn more about similar triangles here:

brainly.com/question/4618367

8 0

2 years ago

Which of the following represents the formula that could be used to find the height of the cone

podryga [215]

If you know the volume then:
(3 * Cone Volume) / (PI * radius^2) = height

3 0

3 years ago

Choose the correct description of the graph of the compound inequality x − 1 less than or equal to 9 or 2x greater than or equal

DerKrebs [107]

X - 1 < = 9 or 2x > = 24
x < = 9 + 1 x > = 24/2
x < = 10 x > = 12

closed circle on 10, shaded to the left
closed circle on 12, shaded to the right

________10_______12__________
<====X X======>
the X represents closed circles

8 0

3 years ago

Please help me out if you can

Arlecino [84]

Answer:

(a, 0)

Step-by-step explanation:

Point S has the same x-coordinate as does Point R: a.

Point S has the y-coordinate 0, as Point S lies on the x-axis.

Correct final answer: (a, 0) represents Point S.

6 0

3 years ago

Can someone help me with this?

jekas [21]

Answer:

$\huge\purple{ x^2 +(y+2)^2 = 4}$

Step-by-step explanation:

Circle is centred at (0, -2)

-> h = 0 & k = - 2

radius of the circle (r) = y-coordinate of the center = - 2

Equation of circle in standard form is given as:

$(x-h)^2 +(y-k)^2 = r^2$

Plugging the values of h, k and r in the above equation, we find:

$(x-0)^2 +[y-(-2)]^2 = (-2)^2$

$\implies\huge\orange{ x^2 +(y+2)^2 = 4}$

This is the required equation of circle.

6 0

2 years ago