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2 years ago

How.to express the sum 21/9 in a whole number and fractions

Mathematics

1 answer:

JulijaS [17]2 years ago

8 0

Answer:

2 1/3

Step-by-step explanation:

21/9 is 2.33 or 2 1/3

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Evaluate the six trigonometric functions of the angle 0

Alla [95]

# Sin θ = 9/15.

# Cos θ = 12/15.

# Cosec θ = 15/9.

# Sec θ = 5/4

Step-by-step explanation:

$by \: using \: pythagorian \: triplets$

${a}^{2} + {b}^{2} = {c}^{2}$

${9}^{2} + {12}^{2} = {c}^{2}$

$81 + 144 = {c}^{2}$

$225 = {c}^{2}$

$c = 15.$

$\sin θ = \frac{9}{15}$

$\cos θ = \frac{12}{15} = \frac{4}{5}$

$\csc θ = \frac{15}{9}$

$\secθ = \frac{5}{4}$

7 0

3 years ago

What is AE?<br> Enter your answer in the box?

Nataly [62]

Answer:

AE = 18 units

Step-by-step explanation:

Δ AEB and Δ DEC are similar , then corresponding sides are in proportion, that is

$\frac{AE}{DE}$ = $\frac{AB}{DC}$ , substitute values

$\frac{2x+4}{x+8}$ = $\frac{12}{10}$ ( cross- multiply )

10(2x + 4) = 12(x + 8) ← distribute parenthesis on both sides

20x + 40 = 12x + 96 ( subtract 12x from both sides )

8x + 40 = 96 ( subtract 40 from both sides )

8x = 56 ( divide both sides by 8 )

x = 7

Then

AE = 2x + 4 = 2(7) + 4 = 14 + 4 = 18 units

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3 years ago

X^2+15x+c is a perfect square trinomial, what is c?

Natalija [7]

Answer:

C equals 56.25

Step-by-step explanation: because all we have to do is 225 divided by 4. Hope this helps and can you make me brainliest. :)

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3 years ago

Simplify the product. 8p(-3p2+6p-2)

Temka [501]

Answer:

Step-by-step explanation:

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LCM of 20 and 24.<br> Pls answer this question.

GREYUIT [131]

Answer:

it's very simple..just see the image which I have sended you I have done it myself...hope you will understand

Step-by-step explanation:

please do follow me and keep asking me questions of maths and science I am quite good in them and don't forget to mark me as the brainliest answer✌✌

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3 years ago

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