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WINSTONCH [101]
3 years ago
12

Which of the summation properties or formulas require the lower index to be 1? Check all that apply.

Mathematics
1 answer:
Talja [164]3 years ago
3 0

Answer:

all but the fourth option

Step-by-step explanation:

pre-calc edg 2020

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Find the area of a triangle with legs that are 9mm 6mm and 12mm
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Here we are given the three sides of the triangle.

So we have Heron's formula to find its area.

Heron's formula is given by :

A= \sqrt{S(S-A)(S-B)(S-C)}

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S= \frac{A+B+C}{2}

plugging values of A, B and C to find S

S= \frac{9+6+12}{2}

S=13.5

Now plugging values of A, B , C and S in Heron's formula

A= \sqrt{13.5(13.5-9)(13.5-6)(13.5-12)}

A=26.14 mm²

Answer: Area of triangle is 26.14 mm².



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How many real numbers solutions are there in the equation?<br> 0=-3x^2+x-4?
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3 years ago
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Umnica [9.8K]

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Step-by-step explanation:

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3 years ago
70 POINTS HELP ME URGENT SHOW YOUR WORK
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Answer:

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It is a$1.25 per ticket for the rides at the fair, so it would be 1.25 multiplied by the amount of tickets that are purchased (x). Spencer bought 17 tickets, so 17x1.25= 21.25 and it says that he spent a total of $30.75 at the fair, so 30.75-21.25=9.5, so that means the cost of admission is $9.50.

Step-by-step explanation:

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Answer:

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