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satela [25.4K]
3 years ago
13

Hi guys . pls help me with this​

Mathematics
1 answer:
daser333 [38]3 years ago
6 0

Step-by-step explanation:

The upstream speed is S / t₁, and the downstream speed is S / t₂.

If we say f is the speed of the fish in calm water, and r is the speed of the river, then:

f − r = S / t₁

f + r = S / t₂

If we say T is the time it takes to cross the river, then the speed perpendicular to the river is ℓ/T, the speed parallel to the river is r, and the overall speed is f.

Using Pythagorean theorem:

f² = (ℓ/T)² + r²

f² − r² = (ℓ/T)²

(f − r) (f + r) = (ℓ/T)²

(S / t₁) (S / t₂) = (ℓ/T)²

S² / (t₁ t₂) = (ℓ/T)²

(t₁ t₂) / S² = (T/ℓ)²

√(t₁ t₂) / S = T/ℓ

T = ℓ√(t₁ t₂) / S

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I NEED HELP ASAP.
diamong [38]

Triángulo equilátero = todos los 3 lados son congruentes ("equilátero" = lados iguales)

Triángulo isósceles = solo 2 lados son congruentes

Triángulo escaleno = todos los lados son diferentes

El triángulo que se muestra aquí es isósceles porque 2 de los lados tienen la misma longitud de 7 cm.

3 0
3 years ago
If f(x)=(x-4 +6, then f(2)= ?<br> (1) 12<br> (3) -4<br> (2) 8<br> (4) 4
kykrilka [37]

Answer:

The answer to it is 4

Step-by-step explanation:

plug 2 to x and solve it

((2)-4)+6

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4 0
3 years ago
The interior dimensions of Mr. Tran's pet fish Mino fish tank are 4 feet long, 3 feet wide, and 2 feet high. The water level in
nika2105 [10]

Answer:

The height of water in the second tank is 2ft

Step-by-step explanation:

In this question, we are asked to calculate the height of water in a second tank if the content of a first tank is poured into the second tank.

The plot twist to answering this question is that we need to note the volume of water in the first tank. Although the first tank has dimensions of 2ft by 3ft by 2ft height, the water in the tank only rose to a height of 1 feet.

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Mathematically, the volume of water present in the tank will be;

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We ignore the 4ft height as it is just the height of the tank and not the height of the water in the tank

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8 0
3 years ago
Read 2 more answers
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Lunna [17]

Answer:

p = 100

Step-by-step explanation:

10 = p/10

multiply both sides of the equation by 10 (the inverse of 1/10, which is 1p/10)

p = 100

please let me know if you have questions about this.

6 0
3 years ago
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balandron [24]

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Step-by-step explanation:

1.Subtract 6 from both sides of the equation

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7 0
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