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2 years ago

This shake is made from five congruent triangles. Find the total area of the shape

Mathematics

1 answer:

erik [133]2 years ago

8 0

Area of one triangle = $A = \frac{a·b}{2} = \frac{6 \times 3}{2} = \frac{18}{2} = 9 {cm}^{2} \\$

For 5 triangles = $9 \times 5 = 45 {cm}^{2}$

- BRAINLIEST answerer

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Brahmagupta’s solution to a quadratic equation of the form ax2 + bx = c involved only one solution. Which solution would he have

zlopas [31]

Answer:

0.897

Step-by-step explanation:

Brahmagupta formula for quadratic equation $ax^2+bx=c$ is

$x=\dfrac{\sqrt{4ac+b^2}-b}{2a}$

It involved only one solution.

The given equation is

$3x^2+4x=6$

Here, a=3, b=4 and c=6. Put these values in the above formula.

$x=\dfrac{\sqrt{4(3)(6)+(4)^2}-4}{2(3)}$

$x=\dfrac{\sqrt{72+16}-4}{6}$

$x=\dfrac{\sqrt{88}-4}{6}$

$x\approx \dfrac{5.38}{6}$

$x\approx 0.897$

Therefore, the required solution is 0.897.

7 0

3 years ago

596 divided by 3 using long divison

Basile [38]

Answer:

198.6 with the remaining 6

Step-by-step explanation:

596/3

596/3 = 198.666666667 as a decimal form

596/3 = 198.67 in 2 decimal places

596/3 = 198.7 to the nearest tenth

596/3 = 198.67 to the nearest hundredth

596/3 = 198.667 to the nearest thousandth

3 0

3 years ago

Alfonso leans a 20 ft ladder long against the wall with a base of 6 feet from the wall. How far up the wall does the ladder reac

jolli1 [7]

Answer:

19.1 ft

Step-by-step explanation:

-This a Pythagorean theorem problem given by the function:

$b^2+h^2=H^2$

Where

H is the Hypotenuse length

h is the perpendicular height

b is the base length.

#Given that H=20 ft and base length,b =6 ft, the perpendicular height is calculated as:

$h^2+b^2=H^2\\\\h^2=H^2-b^2\\\\h^2=20^2-6^2=364\\\\h=\sqrt{364}\\\\=19.0788\approx 19.08\ ft$ $\approx 19.1 \ ft$

Hence, the ladder reaches the wall at a height of 19.1 ft

5 0

3 years ago

Prove que (a-b) x (a + b) = 2 (axb)

sergejj [24]

The answer is twentysix

6 0

3 years ago

One roll of yarn is used to make 1/5 of a blanket. How many rolls would you use in order to make 65 blankets?

vekshin1

325 rolls of yarn. it takes 5 rolls to make one blanket.
so 5 x 65= 325 rolls of yarn

7 0

3 years ago