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3 years ago

50 points and brainliest!

Mathematics

2 answers:

Rzqust [24]3 years ago

6 0

Answer:

Step-by-step explanation:

a - b = 2

$27^{1/3b} / 9^{1/2a}$ =
$(3^3)^{1/3b} / (3^2)^{1/2a}$ =
$3^{b} / 3^a$ =
$3^{b - a}$ =
$3^{-2}$ =
1/9

lora16 [44]3 years ago

3 0

Answer:

Step-by-step explanation:

$\frac{27^{1/3b}}{9^{1/2a}}$

We know that 27^(2/3) = 9. So:

= $\frac{27^{1/3b}}{27^{1/3a}}$

note: 9^(1/2a) = 9^((2/3)(1/2)(a)) = 27^(1/3a)

$= 27^{1/3b-1/3a}=27^{1/3(b-a)} = 27^{1/3(2))} = 9$

9 is the answer

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wariber [46]

Answer:

Step-by-step explanation:

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3 years ago

Eva collected 2,090 coins. Elijah collected 1,910 coins. They divided all their coins into 8 equal stacks. How many coins are in

Oxana [17]

Answer:

500 coins. 2,090 + 1,910 = 4,000. 4,000/8 = 500. hope this helps

Step-by-step explanation:

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3 years ago

How many solutions does the system have?<br> 3x + y = 8<br> 2 + 2y = 8

REY [17]

Answer:

x=2,y=2

Step-by-step explanation:

This question is a simultaneous equation

So let's solve

3x+y=8...(1)

2x+2y=8....(2)

Multiply (1) by 2

6x+2y=16...(3)

Substrate (2) From (3)

4x=8

Let's make x the subject of formula by dividing both sides by 4

x=2

So let's substitute the value of x into (1)

3x+y=8

3(2)+y=8

6+y=8

y=8-6

y=2

Therefore x is 2,y is 2

3 0

3 years ago

Polygon LMNO is similar to polygon QRST, and I and QR are

Oksana_A [137]

Answer:

Step-by-step explanation:

A. The measure of RS

As both polygons are similar, corresponding sides will be same

8 0

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