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Nikitich [7]
2 years ago
15

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

Mathematics
2 answers:
SOVA2 [1]2 years ago
5 0

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

Shkiper50 [21]2 years ago
3 0

Answer:

The answer js 14cm².

Step-by-step explanation:

area=1/2×4×7=14cm²

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3 years ago
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Answer:

The ball shall keep rising tills its velocity becomes zero. Let it rise to a height h feet from point of projection.

Step-by-step explanation:

Let us take the point of projection of the ball as origin of the coordinate system, the upward direction as positive and down direction as negative.

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Using the formula:

v² - u² = 2 a h,

where

u = initial velocity of the ball = +120 ft/s

v = final velocity of the ball at the highest point = 0 ft/s

a = uniform acceleration acting on the ball = -32 ft/s²

h = height attained

Substituting the values we get;

0² - 120² = 2 × (- 32) h

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7 0
3 years ago
Find the slope of the line through the points (1,−8) and (−9,−10). Provide your answer as a fraction simplified in lowest terms.
Vlad [161]

Answer:

1/5

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3 years ago
What is the arithmetic mean of the following numbers?<br> 8 10 8 5 4 7 5 10 8
Bas_tet [7]
I re-orders as 4,5,5,7,8,8,8,10,10.


Mean 7.2222222222222
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Mode 8
Range 6
Minimum 4
Maximum 10
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Quartiles Quartiles:
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Q2 --> 8
Q3 --> 9
Interquartile
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Outliers none
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