3 years ago

2(X+3)=x-4 and 4(5x-2)=2(9x+3)

Mathematics

1 answer:

Fudgin [204]3 years ago

7 0

Answer:

2x+10=x and 2x=14 this is what I got

Step-by-step explanation:

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In ΔOPQ, the measure of ∠Q=90°, OQ = 80, QP = 39, and PO = 89. What ratio represents the cosecant of ∠P?

Serjik [45]

Answer:

cos(O) = 39 / 89

Step-by-step explanation:

Given:

ΔOPQ, where

∠Q=90°

PO = 89

OQ = 39

QP = 80

cosine of ∠O?

cos(O) = Adjacent / Hypotenuse

cos(O) = 39 / 89

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3 years ago

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Roman55 [17]

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vovikov84 [41]

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-Ayden

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3 years ago

AC=36cm, and BC=27cm. Verify that DE\\AB.

emmasim [6.3K]

Answer:

$\overline {DE} \parallel \overline{AB}$ because $\frac{EC}{DC} = \frac{AC}{BC}$ .

Step-by-step explanation:

According to the Theorem of Thales and definition of proportionality, $\overline {DE} \parallel \overline{AB}$ if and only if $\frac{EC}{DC} = \frac{AC}{BC}$ . If we know that $EC = 15\,cm$ , $DC = 20\,cm$ , $BC = 36\,cm$ and $AC = 27\,cm$ , then we have the following result: