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vovikov84 [41]
3 years ago
6

I will give 50 points and brainliest ​

Mathematics
2 answers:
Kay [80]3 years ago
6 0

Answer:

27.2mm²

Step-by-step explanation:

Area of a triangle = \frac{1}{2} * base * height

Base of this triangle = 8mm

Height = 6.8mm

Area = \frac{1}{2} * 8mm * 6.8mm

       = 4mm * 6.8mm

       = 27.2mm²

Aloiza [94]3 years ago
5 0

Answer:

2.72

Step-by-step explanation:

Area of a triangle =  Base x Height

Base of this triangle = 8

Height = 6.8

Area = 4 x 6.8

= 27.2

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PLEASE help I will mark you as brainy
larisa86 [58]

Answer:

Step-by-step explanation:

45

8 0
3 years ago
Read 2 more answers
What is the period of the function y=-4sin (2/3x-pi?3)?
ad-work [718]
2/3 x = 2 pi
x = 2pi × 3/2 = 3pi

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7 0
4 years ago
For the following geometric sequence, find the recursive formula.<br> {-80, 20, -5, ...}
skad [1K]
For the<span> geometric sequence, it has two forms of formula

</span>
<span>We are interested in the recursive formula now

</span>
<span> {-80, 20, -5, ...}

The common ratio is (20/-80)=(-5/20)=-1/4=-0.25

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</span>

I hope that helps!



3 0
3 years ago
If 2a+3b=12 and ab=6 find the value of 8a^3+27b^3
Alex17521 [72]
<span>A) 2a + 3b = 12
B) ab = 6 solving for a
B) a = 6 / b then we substitute this into equation A)
</span><span>A) 12 / b + 3b = 12  </span><span>multiplying this by "b"
A) 12 + 3b^2 = 12b
A) 3b^2 -12b +12= 0 dividing by "3"
A) b^2 -4b + 4 = 0
Factoring
(b-2) * (b-2) = 0
b = 2
Since b = 2 then a = 3

</span>NOW, we put these numbers into:
<span>8a^3 +27b^3 </span>
8*3*3*3 + 27*2*2*2
216 + 216
The answer is 512


6 0
3 years ago
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castortr0y [4]
Simplify whatever is in the parenthesis:

(5×^2-4x-1) and <span>(4x^2-4) 

after that subtract the numbers you got from both </span>parenthesis after simplifying
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3 years ago
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