<img src="https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7B15%7D" id="TexFormula1" title="\frac{6}{15}" alt="\frac{6}{15}" align="absmid

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IceJOKER [234]

1 year ago

dle" class="latex-formula"> + $\frac{3}{10}$ + $\frac{3}{5}$ = __
(it would help if you showed how you did it)

Mathematics

2 answers:

Kisachek [45]1 year ago

8 0

Hey, I hope this helps! I tried to write down some stuff for you.

aleksklad [387]1 year ago

3 0

So what you do,is you add them together to get 13/10 but then you can also simplify it but you can keep the answer to 13/10

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Find the value of x, given cos 0 = 0.4 PLEASE HELP!!!!!! And explain if possible

elena-14-01-66 [18.8K]

Answer:

$x=30$

Step-by-step explanation:

For each right-angled triangle:

$\cos\theta=\frac{cathetus \ adjacent \ \theta}{hypotenuse}$

Because $\cos \theta=0.4, \ \ cathetus\ adjacent \ \theta \ = \ 12, \ \ \ hypotenuse=x$

we have an equation

$0.4=\frac{12}x$

multiplying both sides by x, we get $0.4x=12$

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using calculator, we divide 12 by 0.4

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2 years ago

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Evgesh-ka [11]

Answer:

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Molodets [167]

Answer:

Step-by-step explanation:

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3 years ago

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Which side lengths form a right triangle? Choose all answers that apply: Choose all answers that apply: (Choice A) A 3, 6, \sqrt

dlinn [17]

Answer:

A, B and C

Step-by-step explanation:

Given any three side lengths of a right triangle, the longest side is the hypotenuse.

The side lengths of a right triangle must satisfy the Pythagorean Theorem.

Pythagorean Theorem: $Hypotenuse^2=Opposite^2+Adjacent^2$

Option A: $3, 6, \sqrt{45}$

$(\sqrt{45})^2=3^2+6^2\\45=36+9\\45=45$

True

Option B: 2.5, 6, 6.5

$6.5^2=6^2+2.5^2\\42.25=36+6.25\\42.25=42.25 (TRUE)$

Option C: $4, 8, \sqrt{80}$

$4, 8, \sqrt{80}\\( \sqrt{80})^2=4^2+8^2\\80=16+64\\80=80 (TRUE)$

Since all are true, the side lengths in Options A, B and C forms a right triangle,

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3 years ago