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noname [10]
3 years ago
11

Plz help! (I will give brainliest)

Mathematics
1 answer:
lianna [129]3 years ago
7 0

Answer:

  • 25 mph, 5 mph

Step-by-step explanation:

  • Speed of the boat = x
  • Speed of the current = y

<u>Travel downstream, speed is:</u>

  • x + y = 120/4 = 30

<u>Travel upstream, speed is:</u>

  • x - y = 120/6 = 20

<u>Add up the equations:</u>

  • x + y + x - y = 30 + 20
  • 2x = 50
  • x = 25

<u>Find y:</u>

  • y = 25 - 20 = 5

Speed of the boat is 25 mph

Speed of the current is 5 mph

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Find the missing measures for the rectangle. l = _?_ w = 4.2 m A = 37.8 m2 P = _?_ A) 9 m; 26.4 m B) 14.7 m; 61.74 m C) 9 m; 13.
egoroff_w [7]

Answer:

The correct answer is A.

Step-by-step explanation:

The area of a rectangle can be calculated using the following formula:

Ar=W . I

If we know that the area measures 37.8 m^{2} and one side of the figure measures 4.2 m, we can say that:

37.8m^{2}=4.2m. I

We isolate the side we don't know:

\frac{37.8m^{2}}{4.2m} = I\\9 m = I

So I = 9 m

To know the perimter of a rectangle, we use the following formula:

P= I. 2 + W . 2

P= 9m. 2 + 4.2m. 2

P= 26.4 m

3 0
3 years ago
*EDITED TO SEE BOTH DIAGRAMS* MEANT TO SAY BIOLOGY NOT MATH
poizon [28]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Need some help! Please
Genrish500 [490]

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Ivahew [28]

Answer:

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WINSTONCH [101]

Answer: is an irrational number

Step-by-step explanation:

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3 0
3 years ago
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