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4vir4ik [10]
3 years ago
9

An 80-foot rope is attached to a boat

Mathematics
1 answer:
vfiekz [6]3 years ago
3 0

An 80-foot rope is attached to a boat

7 feet above the water level as shown and a

boy jumps over the wake while

wakeboarding. What is the distance between

his hands and the water level?

80 ft

:[?] ft

Round to the nearest hundredth.

enter

Answer:2.81 feet

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Determine the direction that this parabola opens y=-4x^2-8x-13
Mazyrski [523]

Answer:

The direction that the paraboa y=-4x^2-8x-13 open is

Down

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What is the area of a sector with radius 4 and an angle of 18°? Use 3.14 for pi.
iVinArrow [24]
The area of the sector (As) of a circle may be calculated by the formula,
                                     As = (a / 360) x π x r²
where a is the measure of angle in degrees and r is the radius. Substituting the known values, 
                                    As = (18 / 360) x 3.14 x (4²) = 2.512
Thus, the area of the sector is approximately 2.512 squared units.

8 0
3 years ago
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EF is the median of trapezoid ABCD.
BARSIC [14]

Answer:

Part A) x = 11

B) length of BC =  x + 12 =  x + 12 = 11 + 12 =23

length of EF =  4x - 18 =  4(11) - 18 = 44 - 18 =26

length of AD =  3x - 18 =  3(11) - 4 = 33 - 4 =29

Step-by-step explanation:

Median of trapezium is m=\frac{base1+base2}{2}

In provided figure, base1 is x+12 and base2 is 3x-4

A) solve for value of x

calculate the median m=\frac{base1+base2}{2}

4x-18=\frac{x+12+3x-4}{2}

4x-18=\frac{4x+8}{2}

4x-18=2x+4

2x-18=4

2x = 18 + 4

2x = 22

x = 11

B) To find the length of BC, AD and EF , put the value of x in equation of lines

length of BC =  x + 12 =  x + 12 = 11 + 12 =23

length of EF =  4x - 18 =  4(11) - 18 = 44 - 18 =26

length of AD =  3x - 4 =  3(11) - 4 = 33 - 4 =29

5 0
3 years ago
Change the following algebraic expressions to the statement in words: i. 3mn +7 ii. xy + (x+y)
kicyunya [14]

Answer:

i) 3*m*n + 7

Then we can write the first term as:

"3 times the product between two numbers"

Where the product of two numbers is m*n

And after that we need to add 7, then the complete sentence is:

"3 times the product between two numbers, increased by 7"

ii) x*y + (x + y)

The first part, x*y, can be written as:

"the product of two numbers"

where the two numbers are the number x and the number y.

After that, we add the sum of these two numbers, then the complete sentence can be:

"the product of two numbers, plus the sum of these two numbers"

8 0
2 years ago
PLEASE HELP
Ad libitum [116K]

Answer:

D. Jessie needs to buy more eggs, flour, butter, and sugar.

Step-by-step explanation:

it is good to have more then none

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