All categories

3 years ago

Help with this question, please!! I don't understand!!

Mathematics

2 answers:

Natalija [7]3 years ago

8 0

Answer:

h = (2x - 6) m

Step-by-step explanation:

Area of a triangle:

A = 1/2 b h

2A = hb

so h = 2A/b

Plug in

h = 2(x^2 - 9) / (x + 3)

= 2 (x + 3)(x - 3) / (x + 3)

= 2 (x - 3)

= 2x - 6

Answer

h = (2x - 6) m

Natalija [7]3 years ago

6 0

the answer is correct answer c. I=(2x - 3) m

You might be interested in

What are the measures of angle B and D

insens350 [35]

Answer:

Step-by-step explanation:⇔

∠B

∠D

are the measures but if you forgot to add the picture then... who knows

7 0

3 years ago

25x2 - 64 = 0<br> I need help solving this using quadratic function.

andreev551 [17]

Answer:

Step-by-step explanation:

25x^2-64=0

x=8/5, -8/5

6 0

2 years ago

Read 2 more answers

Find the value of x from the given figure:

zubka84 [21]

Answer:

60°

Step-by-step explanation:

2x and x are linear pair,

=> 2x + x = 180

=> 3x = 180

=> x = 180/3

=> x = 60°

=>2x =120°

7 0

3 years ago

Read 2 more answers

A present is shaped like a

matrenka [14]

Answer: Yes

Step-by-step explanation:

8 0

3 years ago

One large bubble separates into four small bubbles so that the total area of the small bubbles is equal to the area of the large

sergey [27]

Answer:

R = 10 cm

Step-by-step explanation:

The area of a spherical shape is given by :

$A=4\pi r^2$

Where

r is the radius of the sphere

ATQ,

One large bubble separates into four small bubbles so that the total area of the small bubbles is equal to the area of the large bubble.

The radius of each small bubble is 5 cm

Using the given condition,

$4\pi R^2=4\times (4\pi r^2)\\\\R^2=4r^2\\\\R=\sqrt{4r^2} \\\\R=2r\\\\R=2\times 5\\\\R=10\ cm$

So, the radius of the large bubble is equal to 10 cm.

5 0

3 years ago

Read 2 more answers