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3 years ago

Respuesta para 8×-2=-9+7×

Mathematics

1 answer:

den301095 [7]3 years ago

8 0

The answer is x=-7
8x-7x-2=-9
8x-7x=-9+2
-7

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Find the area of an obtuse-angled triangle with a base of 4 cm and a height 7 cm.

SOVA2 [1]

Answer:

14 cm²

Step-by-step explanation:

Obtuse angle: more than 90° and less than 180°

The formula for the area of an obtuse triangle is the same as that for any triangle:

area of a triangle = 1/2 x base x height

Therefore, given:

base = 4 cm
height = 7 cm

⇒ area = 1/2 x 4 x 7 = 14 cm²

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3 years ago

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umka21 [38]

Answer:

x = 5 or 1

Step-by-step explanation:

Square both sides to get

x^2 - 6x + 9 = 4 now subtract four from both sides

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2 years ago

Does 18x-(9x+2)=4x have a solution?

Lena [83]

Answer:

Yes

Step-by-step explanation:

9x - 4x = 2

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x = 0.4

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3 years ago

What is the value of x, given that PQ || BC? A. 10 B. 5 C. 7 D. 8

Brums [2.3K]

Answer:

Option B $x=5\ units$

Step-by-step explanation:

we know that

If PQ || BC, then triangles APQ and ABC are similar

Remember that

If two figures are similar, then the ratio of its corresponding sides is equal

$\frac{AP}{AB}=\frac{AQ}{AC}$

substitute the values

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solve for x

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Step-by-step explanation:

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3 years ago