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Ivanshal [37]
3 years ago
14

Please help me I don't understand this

Mathematics
1 answer:
zzz [600]3 years ago
5 0

Answer: MN = 8.5

Step-by-step explanation:

Form it into a right triangle with MN being the hypotenuse (side opposite the right angle)

To make this a right triangle, plot a point at (8,-2) and connect the sides. The lengths of the legs that form the right angle are both 6 units. Use the Pythagorean theorem to solve for length of MN. a^2+b^2=c^2. (a and b are the legs that form the right angle and c is the hypotenuse)

6^2+6^2=c^2

36+36=c^2

72= c^2

8.48528137 = c.

Question says to round to nearest tenth of a unit

8.5 = c (line MN)

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PLEASE HELP!! I DON'T UNDERSTAND IT!!
tia_tia [17]
Use the formula  V=Bh

V is 306.52
B is 19.4

to get (h) height you divide

306.52 divided by 19.4= 15.8


3 0
3 years ago
Read 2 more answers
If my radius is 7.8 maters. What is the circumference and area of my circle
Burka [1]
Circumference = 2 · π · r   or  π · d

Radius = 7.8

7.8 × 2 = 15.6

15.6 × 3.14(π) = 48.984

Circumference = 48.984 rounded = 49

Area = π · r²

Radius = 7.8

7.8 × 7.8 = 60.84

60.84 × 3.14(π) = 191.0376

Area = 191.0376 rounded = 191

Hope this helped☺☺
4 0
3 years ago
Could 7.7 cm, 4.0 cm, and 1.7 cm be the side lengths of a triangle?
Sedbober [7]
  • Triangle Inequality Theorem: States that the sum of any two sides of a triangle is greater than the length of the third side; A+B>C\\B+C>A\\A+C>B

So for this, we are applying the triangle inequality theorem. If any of the inequalities are not true, then this cannot be a triangle. (Let A = 7.7, B = 4.0, and C = 1.7)

7.7+4.0>1.7\\11.7>1.7\ \textsf{(true)}\\\\4.0+1.7>7.7\\5.7>7.7\ \textsf{(false)}\\\\7.7+1.7>4.0\\9.4>4.0\ \textsf{(true)}

<u>Since the second inequality is false, these lengths cannot form a triangle.</u>

3 0
4 years ago
1)
Nutka1998 [239]

Answer:

So a ratio of 8:3 means for every 8 cars that is 3 trucks so we have the number of trucks which is 21 so what i did to find the answer was see how many times 3 went into 21 which is 7 times then you would take the 7 and times it by 8 and get 56 so there are 56 cars.

Step-by-step explanation:

6 0
3 years ago
A supermarket had bags of red grapes for $13.00 for 5 bags. They also had bags of green grapes priced at $5.08 for 2
boyakko [2]

Answer:

Green grapes are less expensive.

Step-by-step explanation:

5.08/2 = 2.54

Multiply that by 5

You get $12.70 for 5 bags.

6 0
3 years ago
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