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Goshia [24]
3 years ago
14

WILL MARK BRAINLYIST IF RIGHT!!I don’t know how to do this

Mathematics
1 answer:
Agata [3.3K]3 years ago
5 0

Answer:

i would just round 0.50 to the nearest tenth

Step-by-step explanation:

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Write the explicit formula for the following sequence.<br> 2, 5, 8, 11, ...
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add by 3

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What is the product of 3/4 x 3​
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9/4

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3 years ago
The solution to 2x2 – 11 = 87 is
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\text{Solve the equation:}\\\\2x^2-11=87\\\\\text{Add 11 to both sides}\\\\2x^2=98\\\\\text{Divide both sides by 2}\\\\x^2=49\\\\\text{Square root:}\\\\x=\pm\sqrt49\\\\\text{This means that the answer could be 7 or -7}\\\\\boxed{\text{x=7 or x= -7}}

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3 years ago
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somebody please help.. What is the area of the equilateral triangle? Round to the nearest square centimeter.
zloy xaker [14]
<span>for an equilateral triangle you need to know that:
- Sides are equal a = b = c (figure 1)
- Each angle is 60 degrees (figure 1)
- Height led from the top of the base of the triangle divide into two identical special right triangles on Measures angles 30,60,90 degrees. (figure 3)

</span>triangle with angles : 30°,60° , 90°<span>  is the length of the sides :
1 a = a  catheus (red)
2 b = a</span>√3  catheus (red)
<span>3 c = 2a  hypotenuse

</span><span>the product of the hypotenuse of the triangle is the value of the surface of an equilateral triangle
</span>
P = a*b = (1/2*68cm*√3)*(1/2*68cm) = (34√3cm) * (34cm) = 1156√3cm²

for notebook
You can use the model

P =  \frac{ a^{2} * \sqrt{3} }{4}  =  \frac{ (68cm)^{2}* \sqrt{3}  }{4} =  \frac{4624 \sqrt{3}  cm^{2} }{4}  = 1156 \sqrt{3}  cm^{2}

<span>as soon as I add attachments - drawings</span>

8 0
3 years ago
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