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3 years ago

A motorboat travels 244 kilometers in 4 hours going upstream and 665

Mathematics

1 answer:

professor190 [17]3 years ago

5 0

Answer:

Rate of the current: 19 kilometers per hour

Rate of the boat in still water: 80 kilometers per hour

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The length of a side of a square is √7 cm. What is the perimeter of the square? (Perimeter = the distance around the outside of

Sonja [21]

Since the square has 4 sides, you only have to add $\sqrt{7}$ four times.

The perimeter of the square is: $4 \cdot \sqrt{7} = 10.6$ cm

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3 years ago

Read 2 more answers

Y= -2x + 15 y= -2(x-2)2 + 35

barxatty [35]

Answer:

(x, y)=(301 43)

( ---- , ---)

( 29 29)

Step-by-step explanation:

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3 years ago

The volume of the pyramid shown in the figure is cubic centimeters. If the slant height of the pyramid increases by 4 centimeter

Nostrana [21]

Answer:

Part a) The volume of the original pyramid is $15\ cm^{3}$

Part b) The volume of the pyramid increases by $6\ cm^{3}$

Step-by-step explanation:

The complete question is

Part 1) The volume of the pyramid shown in the figure is 9,15,21, or 63 cubic centimeters?. Part 2) If the slant height of the pyramid increases by 4 centimeters and its height increases by 2 centimeters, the volume of the pyramid increases by 6,9,12 or 21 cubic centimeters?

we know that

The volume of the pyramid is equal to

$V=\frac{1}{3}Bh$

where

B is the area of the base

h is the height of pyramid

see the attached figure to better understand the problem

Step 1

Find the volume of the original pyramid

the area of the base B is equal to

$B=3^{2}=9\ cm^{2}\\h=5\ cm$

substitute

$V=\frac{1}{3}(9)(5)=15\ cm^{3}$

Step 2

Find the volume of the new pyramid

$B=9\ cm^{2}$ -------> the area of the base is the same

$h=5+2=7\ cm$ ------> the height increase by

substitute

$V=\frac{1}{3}(9)(7)=21\ cm^{3}$

Subtract the original volume from the new volume

$21\ cm^{3}-15\ cm^{3}=6\ cm^{3}$

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3 years ago

How much fencing will John need? Use 22/7 for x.

Serjik [45]

Well 22/7 is 3.14 and so on but since there is a little more than 3 you need to make sure he covers up all the fencing places... SO John will need 4 fences

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3 years ago

at Kayla swimwear 6 out of 20 style at the store are bikinis what percentage of swimsuit styles at the store are bikinis

jasenka [17]

Answer:

is wrong，6/20,3/10

Step-by-step explanation:

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3 years ago