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user100 [1]
3 years ago
5

| \l/ HELP! | \|/ PLEASE!

Mathematics
1 answer:
shutvik [7]3 years ago
7 0

Answer:

Esmeralda added the numerators; Esmeralda added the denominators; Esmeralda did not use the reciprocal of the divisor

Step-by-step explanation:

-5 1/4 divided by 3/2 = -7/2

The same goes for the second fraction.

For the -21/4 and the 3/2 with the parenthesis, they added the numerators and denominators when they should've multiplied.

And they did not use the reciprocal of the divisor because -21/4 divided by 3/2 would mean that you would have to multiply -21/4 by 2/3 not 3/2.

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a ferry shuttles people from one side of a river to the other. the speed of the ferry is still water is 25 mi/h. the river flows
Anarel [89]

Answer:

The Terry's resultant speed is 27mi/h

Direction of ferry=20°

Step-by-step explanation:

(-25,0) + ( 0, 9)= (-25, -9) is the vector representing the movement of the ferry

Speed of ferry = sqrt[(-25)^2 + (-9)^2]

Speed= sqrt (-625 + (-81))

Speed= sqrt(-706)

Speed=26.57mi/h

Nearest tenth,speed= 27mi/h

Tanz° = (-9/-25)

Tanz°= 0.36

Z°= tan^-1 0.36

Z= 19.80°

Nearest tenth,z=20°

7 0
3 years ago
(Look at picture above) Find the volume of the cone. Round your answer to the nearest tenth. 9 yd 7 yd The volume of the cone is
nata0808 [166]

Answer:

V = 115.5 cubic yards

Step-by-step explanation:

V (cone) = 1/3πr²h

just substitute given values to get:

r = 7/2 or 3.5

h = 9

V = π(3.5²)(9)/3

V = 115.5 cubic yards

3 0
2 years ago
I need help with the equation (11) - 2.
nirvana33 [79]

Answer:

it's technically 9 because it's the same as 11-2

3 0
3 years ago
Using the given points and line, determine the slope of the line. (1, 2) and (2, 1) slope = 2 slope = 1 slope = -1
Bas_tet [7]

Answer:

-1

Step-by-step explanation:

Slope formula: (y₂ - y₁) / (x₂ - x₁)

= (2 - 1) / (1 - 2)

= -1

8 0
3 years ago
2. Water is leaking from a faucet at a constant rate of gallon per minute.
Alex Ar [27]
64 gallons per minute
7 0
3 years ago
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