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3 years ago

Which decimal number is equal to 4/9 ?

Mathematics

2 answers:

mash [69]3 years ago

5 0

The decimal that is equal to 4/9 is 0.44444?

Fittoniya [83]3 years ago

5 0

0.(4). the 4 after the decimal is infinite. Divide four by nine, what do you get? 0.444444444444444444444444444 etc.

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Prove this trigonometric equation;<br><br> - tan^2x + sec^2x = 1,

alekssr [168]

Hey there :)

- tan²x + sec²x = 1 or 1 + tan²x = sec²x

sin²x + cos²x = 1
Divide the whole by cos²x

$\frac{sin^2x}{cos^2x} + \frac{cos^2x}{cos^2x} = \frac{1}{cos^2x}$

$\frac{sinx}{cosx} = tanx$ so $\frac{sin^2x}{cos^2x} = tan^2x$
and
$\frac{1}{cosx} = secx$ so $\frac{1}{cos^2x} = sec^2x$

Therefore,
tan²x + 1 = sec²x
Take tan²x to the other side {You will have the same answer}

1 = - tan²x = sec²x or sec²x - tanx = 1

3 0

3 years ago

Someone help with this

timama [110]

Answer:

18% decrease

Step-by-step explanation:

7,500 - 6,125 = $1,375
Set up a proportion: $\frac{1375}{7500} = \frac{x}{100}$
Cross multiply, then divide: 1375 × 100 = 137500, 137500 ÷ 7500 = 18 1/3
18 1/3% rounded = 18%
It went down, so it is a decrease

I hope this helps!

7 0

3 years ago

Read 2 more answers

Write a real world problem for the following equation:<br> 80-3x=53

Afina-wow [57]

Answer:

x=9

Step-by-step explanation:

Step 1: Simplify by both sides of the equation.

80-3x=53

80+-3x=53

-3x+80=53

Step 2: Subtract 80 from both sides.

-3x+80-80=53-80

-3x=-27

Step 3: Divide by both sides by 3.

-3x/-3 = -27/-3

x=9

4 0

3 years ago

HURRY ITS TIMED UUUUUUUUUUUUUUUUUYUUUUUUUUUYTDFBDHMHHDHKGFG

BabaBlast [244]

Answer:

3,2

Step-by-step explanation:

18,12

18/6 = 3

12/6 = 2

3,2

srry its timed so i tried to be quick

6 0

2 years ago

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Given triangle ABC, A = 120°, a = 8, b = 3; determine B to the nearest whole degree. Do not use a decimal point or extra spaces

zubka84 [21]

The answer is 45
8/120. = 3/x cross multiply

4 0

3 years ago

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