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vampirchik [111]

3 years ago

10

5a please :) I don't know the formula

1 answer:

KatRina [158]3 years ago

6 0

If you have to find Lateral Superficial Area just do P (perimeter of base) * h

So (8+19+10+7) * 8 = 44*8 = 352 cm^2

If you have to find Total Superficial Area the formule is LA + 2[(B+b)*h/2]

TA = 352 + 2[(19*8)/2] = 352+2(76) = 352+152 = 504 cm^2

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Can someone answer all 3 thanks.

MA_775_DIABLO [31]

Answer:

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6 0

3 years ago

M=7n make n the subject

Olin [163]

We divide both sides by 7 which makes n alone. Which is n=m/7.

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3 years ago

Simplify 3(x + 4) + 5x. Write your answer in factored form.

Anvisha [2.4K]

Answer:

8x + 12

Step-by-step explanation:

3(x + 4) + 5x

3x + 12 + 5x

8x + 12

7 0

3 years ago

an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.

dolphi86 [110]

Answer:

$\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}$

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

$A_\triangle=\dfrac{bh}{2}$

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

<em />

We need a length of a height.

Use the Pythagorean theorem:

$leg^2+leg^2=hypotenuse^2$

We have:

$leg=5,\ leg=h,\ hypotenuse=20$

Substitute:

$5^2+h^2=20^2$

$25+h^2=400$ <em>subtract 25 from both sides</em>

$h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm$

Calculate the area:

$A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2$

8 0

3 years ago

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sweet [91]

Answer:

(1.5,2)

Step-by-step explanation:Its the only one furthest away from the rest

4 0

3 years ago