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OlgaM077 [116]
2 years ago
11

Help me, please i need help or I'm gonna spend hours on this

Mathematics
1 answer:
Alekssandra [29.7K]2 years ago
7 0

Answer:

28 sq units

Step-by-step explanation:

to find the area of a triangle you multiply the base and height together and then divide by 2

in this problem, i counted and found the base = 7 units and

the height = 8 units

A = 7x8÷2

A = 56/2 = 28

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Answer:

48

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8 girls x 3books = 24.....

6boys x 4books = 24...( 48 i think would be the answer

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Please help with this!! Triangles and angles
Delvig [45]

Answer:

Hello, for the second question, you can actually form a triangle from the line. From there, you can see the height (aka y) will be easier to solve. I hope this helps!

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8 0
3 years ago
-x + 4y = 15<br> 5x + 6y =3 <br> A (3,3)<br> B (-3,-3)<br> C (-3,3)<br> D (3,-3)
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b

Step-by-step explanation:

6 0
3 years ago
Determine whether a triangle can be formed with the given side lengths. If so, use Heron's formula to find the area of the trian
kipiarov [429]
Triangle inequality rule states that the sum of eachpair of sides must be greater than the third sides.
 240 + 123 > 207 true
240 + 207 > 123 true
123 + 207 > 240 true

A = √(s(s-a)(s-b)(s-c))
s is the semi-perimeter (a + b + c)/2
s = (240 + 123 + 207)/2
s = 285
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4 0
3 years ago
TRIGONOMETRY - Given the complex numbers <img src="https://tex.z-dn.net/?f=z_%7B1%7D%20%3D20%20cis%20226" id="TexFormula1" title
Norma-Jean [14]

This is easily done after writing both complex numbers in exponential form:

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z_2=5\,\mathrm{cis}76^\circ=5e^{76^\circ i}

Then

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In trigonometric form, this is

\dfrac{z_1}{z_2}=4\,\mathrm{cis}150^\circ=4(\cos150^\circ+i\sin150^\circ)=\boxed{-\dfrac{\sqrt3}2+\dfrac i2}

8 0
3 years ago
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