3 years ago

Name one rational number and one irrational number.

Mathematics

1 answer:

prohojiy [21]3 years ago

6 0

0.333 irrational
10 rational

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Help again idk how to do this

creativ13 [48]

Answer:

it's,

$( {5}^{3} ) ^{ - 4} \\$

Step-by-step explanation:

$( {5}^{3} ) ^{ - 4} \\ = {5}^{ - 12}$

5 0

3 years ago

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Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

Find the value of AC

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

Find the value of BC

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

Find the value of BD

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

the answer is

the length of BD is 11.93 units

8 0

3 years ago

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Y=-7 + 2x how to graph

blondinia [14]

I know for 2x you would go up 2 over 1 but I don’t know about -7?? Maybe down

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3 years ago

. The regular price of a scooter is $89.99. The scooter is on sale for 20%

Artyom0805 [142]

Answer:

Step-by-step explanation:

3 0

2 years ago

<, >, =

AURORKA [14]

96 fluid ounces < 13 cups
25 pounds > 384 ounces
8 yards = 288 inches

Have a nice day!

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3 years ago