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xenn [34]
4 years ago
9

PLEASE ANSWER BOTH QUESTIONS

Mathematics
1 answer:
mr Goodwill [35]4 years ago
6 0
Both answers are B :)
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Fran swims at a speed of 2.9 km/h in still water. The Lazy River flows at a speed of 0.1 km/h. How long will it take Fran to swi
slega [8]

Answer:

Fran's upstream speed (against the current):

2.9 km/hr - 0.1 km/hr = 2.8 km/hr

Fran's downstream speed (with the current):

2.9 km/hr + 0.1 km/hr = 3.0 km/hr

Using the distance formula for calculating time:

rate x time = distance

time = distance / rate

Fran's upstream time = 9 / 2.8 = 3.21 hrs

Fran's downstream time = 9 / 3.0 = 3.0 hrs

6 0
3 years ago
Emily has a rectangular deck in her backyard with an area of 96 square feet. She wants to increase.
Dominik [7]

Answer:

The area of the deck after she doubles the length and width will be of 384 square feet.

Step-by-step explanation:

Area of a rectangle:

The area of a rectangle of length l and width w is given by:

A = lw

Doubling length and width:

If we double the length and the width, the dimensions are 2l and 2w. Thus, the area will be of:

A_d = 2l*2w = 4lw

That is, if both dimensions are doubled, the area is multiplied by 4.

What will the area of the deck be after she doubles the length and width?

Was 96. Then, both dimensions were doubled, and the area has to be multiplied by 4.

96*4 = 384

The area of the deck after she doubles the length and width will be of 384 square feet.

4 0
3 years ago
Any mind helping? 15 Points! :>
Hitman42 [59]
1. 63a+54b
2. 2xy+11zy
4 0
3 years ago
Read 2 more answers
The cross-sectional areas of a triangular prism and a right cylinder are congruent. The triangular prism has a height of 5 units
nydimaria [60]

Answer:

  The volume of the prism is equal to the volume of the cylinder

Step-by-step explanation:

For each solid figure, the volume formula is ...

  V = Bh

where B is the cross-sectional area and h is the height. The problem statement tells us B and h have the same values for both figures. Hence their volumes are the same.

5 0
3 years ago
an old treasure map has the following instructions stand next to the black rock and face west. Walk 20 yards and then turn 90 de
Elza [17]

Answer:

West.

Step-by-step explanation:

An old treasure map has the following instructions: stand next to the black rock and face west. Walk 20 yards and then turn 90 degrees clockwise. Walk another 10 yards and then turn 45 degrees anticlockwise. Walk another 15 yards, reverse your directions and walk 5 yards back. Turn 135 degrees clockwise and walk another 10 yards. To determine in which direction you are now facing, the following logical reasoning must be carried out:

You start by walking 20 yards west, then turning 90 degrees clockwise, turning south. Then you walk 10 yards and turn counterclockwise 45 degrees, to the southwest. Later, you walk another 15 yards, turn the direction to the northeast, and walk 5 more yards. From the northeast turn 135 degrees clockwise to the west and walk 10 yards. Thus, the final sense in which the person is walking is to the West.

6 0
3 years ago
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