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Dominik [7]
2 years ago
15

Liana is studying the activity of nurse sharks. She starts at a position that is 25 feet below sea level. She rises 9 feet, then

descends 12 feet to take a photo of a sleeping shark. Find her position relative to sea level when she took the photo.
Mathematics
1 answer:
Reil [10]2 years ago
6 0

Answer:

I believe the answer is -28

Step-by-step explanation

I gotchu bro

The answer is -28 because Liana starts at 25 below sea level (which is the same thing as -25) If she rises 9 feet, then you know to add because she is going up so your just gonna add. Next she descends 12 feet, so she went down, so subtract. So i know the answer is going to be -28 because -25+9 is -16, then imma subtract -16 and 12 so, -16 - 12= -28. There ye go

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In trapezoid ABCD with legs AB and CD , diagonals BD ∩ AC =M so that BM:MD=1:4. Find AAMD, ACMD, and AACD if the area of AABM=8
bazaltina [42]

Answer:

Area of triangle AMD is 32 square inches.

Area of triangle CMD is 8 square inches.

Area of triangle ACD is 40 square inches.

Step-by-step explanation:

In trapezoid ABCD with legs AB and CD.

Diagonal BD and AC intersect at M so that BM:MD=1:4

We are given ar(ABM)=8 in²

Ratio of area of two triangle is equal to ratio of their base.

\dfrac{ar(ABM)}{ar(AMD)}=\dfrac{BM}{MD}

\dfrac{8}{ar(AMD)}=\dfrac{1}{4}

ar(AMD)=32\text{ in}^2

Thus, Area of triangle AMD is 32 square inches.

If two triangles lie on same base and same parallel line then their area is equal.

\therefore ar(ABD)=ar(ACD)

ar(ACD)=ar(ACD)=ar(AMD)+ar(ABM)

ar(ACD)=8+32\Rightarrow 40\text{ in}^2

Thus, Area of triangle ACD is 40 square inches.

ar(CMD)=ar(ACD)-ar(AMD)

ar(CMD)=40-32\Rightarrow 8\text{ in}^2

Thus, Area of triangle CMD is 8 square inches.

5 0
3 years ago
the length of a rectangle is 5 ft more than the width. The. Is 22 ft. Find the width of a rectangle.​
musickatia [10]

Answer:

To the tenth = 2.8

Step-by-step explanation:

x*(x+5) = 22

2.8 * (2.8 + 5) = about 22

5 0
3 years ago
Plz awnser because Aleks is dumb
Black_prince [1.1K]
Since you know it's a square, you also know that all the sides are 3 2/3. So to find area you multiply, so 3 2/3 x 3 2/3. An easy way to do this is convert it to a mixed number (11/3) and then multiply: 
11/3 x 11/3 = 121/9
8 0
3 years ago
Write a ratio for this number
Vladimir79 [104]

Answer:

o/3 or 1/1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Me. Silvera bought a can of paint. He used 3/8 of it to paint a fence and 1/4 to paint a table top. He painted a chair with some
LuckyWell [14K]
Well, seeing the information above, he used 5/8 of paint to paint the fence and table top. If he only had 1/8 left of the paint, he used 2/8 on the chair.

I found the 5/8 because I needed a common denominator. I multiplied the top and bottom by 2 to get 2/8. 3/8+2/8=5/8, and then I added 2/8 to the 5/8 that then gave me 7/8 of paint used, and 1/8 of paint left. 

Hope I helped!
3 0
3 years ago
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