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Mrrafil [7]
3 years ago
13

Find the area of a triangle with a =33, b =51, and c =42.

Mathematics
1 answer:
PolarNik [594]3 years ago
4 0

Answer:

d. 690.1 units²

Step-by-step explanation:

1. You can use the Heron's formula to calculate the area of the triangle, which is:

K=\sqrt{s(s-a)(s-b)(s-c)}

Where:

s=\frac{a+b+c}{2}

2. Calculate s:

s=\frac{33+51+42}{2}\\s=63

3. Substitute values into the formula shown above and calculate the area, as following:

K=\sqrt{63(63-33)(63-51)(63-42)}\\K=690.1units^{2}

4. Therefore, the area is 690.1 units².

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Sveta_85 [38]
8 cm and 9 cm is the correct answer
8 0
3 years ago
What is the mean median and mode of 99, 69, 96, 69, 78. Round to the nearest tenth if necessary
KiRa [710]
A median is the middle number of a data set.
To find it put the numbers in order.
78, 69, 69, 96, 99
Then find the middle number
78, 69, *69,* 96, 99

The median is 69

A mode is the number that appears the most in a set of numbers.
78, *69, 69,* 96, 99

The mode is 69

To find the mean or average of a set of numbers, add all the numbers together then divide by the number of numbers there are.
99+69+96+69+78 = 411
411/5 = 82.2

The mean is 82.2

Hope this helped! If you have anymore questions or don't understand, please comment on my profile or DM me. :)
6 0
3 years ago
These four numbers are plotted on a number line: -2/3, 5/8, -3/5, and -1/2. Which is the correct ordering on the number line fro
stiks02 [169]

Answer:

-2/3 ; - 3/5 ; - 1/2 ; 5/8

Step-by-step explanation:

Given that:

We could convert the numbers to decimal to obtain a better view of the values :

-2/3 = - 0.66666

5/8 = 0.625

-3/5 = - 0.6

-1 /2 = - 0.5

Negative values are always arranged first on left of a number line.

-0.66666 < - 0.6 < - 0.5 <0.625

Hence,

-2/3 ; - 3/5 ; - 1/2 ; 5/8

5 0
3 years ago
Answer this question please and thank you
ELEN [110]

Answer:

x = -11

-11-3=-14

-14/7=-2

7 0
3 years ago
Find the perimeter and area of the figure below.
hichkok12 [17]

Answer:

perimeter = 40

area = 46(unit)^2

Step-by-step explanation:

Perimeter - all sides added together

  1. Find unknown sides (8-3 = 5, 12-2 = 10)
  2. Add all sides together (8+2+5+10+3+12 = 40)

Area - Length multiplied by width

  1. Divide shape into two rectangles (#1 is 2x5 and #2 is 3x12)
  2. Find individual area (rectangle #1: 2*5 = 10 / rectangle #2: 3*12 = 36)
  3. Add areas together (10+36 = 46)
  4. Finish with unit squared (46___^2)
8 0
3 years ago
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