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4 years ago

Explain why multiplying 37.4×0.1 gives a product that is less than 37.4

Mathematics

2 answers:

Yuliya22 [10]4 years ago

5 0

Multiplying by 0.1 is the same as dividing by 10, as 0.1 = 1/10

So, 37.4x 0.1 = 37.4/10 = 3.74

-Dominant- [34]4 years ago

4 0

Answer/Explanation:

When reading 0.1, we read it as "one tenth." This can also be represented as 1/10.

A fraction bar represents division; this means when we multiply something by 1/10, or take 1/10 of something, we divide it by 10. Division results in a smaller number; thus multiplying by 1/10 results in a smaller number.

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How many nickels are in 2.25

Papessa [141]

Try getting rid of the decimal. then divide 225 by 5.
the answer will be 45 nickels

3 0

4 years ago

Read 2 more answers

QveST [7]

Answer:

Step-by-step explanation:

Let x represent the number of calls made with plan 1 in a month.

Let y represent the number of calls made with plan 2 in a month.

Plan 1 charges $25 per month for unlimited calls. This means that the total cost of x calls made with plan 1 in a month would be $25

Plan 2 charges $15 per month plus $0.04 per call. This means that the total cost of x calls made with plan 1 in a month would be

15 + 0.04x

a) for the number of calls for which Plan 1 is more economical than Plan B, it becomes

25 < 15 + 0.04x

25 - 15 < 0.04x

10 < 0.04x

0.04x > 10

x > 10/0.04

x > 250

b) plan 1 would be more economical when the calls per month exceed 250.

6 0

3 years ago

If the circle has the same diameter as the edge length of the square, then the area of this circle is ___________the area of the

WINSTONCH [101]

Answer:

The area of this circle is $(\frac{\pi}{2} )$ the area of the square.

For the uniform electric field normal to the surface, the flux through the surface is electric field multiplied by the area of this surface.

Therefore, Φsquare is $(\frac{2}{\pi} )$ ϕcircle

Step-by-step explanation:

Area of the circle is given by;

$A_c = \frac{\pi d^2}{4}$

Area of the square is given by;

$A_s = L^2$

relationship between the edge length of the square, d, and length of its side, L,

$d = \sqrt{L^2 + L^2} \\\\d = \sqrt{2L^2}$

But area of the square , $A_s = L^2$

$d = \sqrt{2A_s}$

Then, the area of the square in terms of the edge length is given by;

$A_s = \frac{d^2}{2}$

Area of the circle in terms of area of the square is given by;

$A_c = \frac{\pi d^2}{4} = \frac{\pi}{2}(\frac{d^2}{2} )\\\\But \ A_s = \frac{d^2}{2} \\\\A_c = \frac{\pi}{2}(\frac{d^2}{2} )\\\\A_c = \frac{\pi}{2}(A_s )$

For the uniform electric field normal to the surface, the flux through the surface is electric field multiplied by the area of this surface.

Ф = E.A

Flux through the surface of the circle is given by;

$\phi _{circle} = E.(\frac{\pi d^2}{4})$

Flux through the surface of the square is given by;

$\phi _{square} = E.(\frac{d^2}{2} )\\\\\phi _{square} =E.(\frac{d^2}{2} ).(\frac{\pi}{2} ).(\frac{2}{\pi} )\\\\\phi _{square} =E.(\frac{\pi d^2}{4} ).(\frac{2}{\pi} )\\\\\phi _{square} =(\phi _{circle}).(\frac{2}{\pi} )$

Therefore, Φsquare is $(\frac{2}{\pi} )$ ϕcircle

5 0

3 years ago

Given Sn=2n^2 - 5n, find

brilliants [131]

Answer:

a) -3

b) 117

c) 100

Step-by-step explanation:

(a) 2(1)²-5(1)

1²= 1

2×1= 2

2-5= -3

(b) 2(9)²-5(9)

9²= 81

81×2= 162

162-45= 117

4²=16

16×2= 32

32-20= 12

8²=64

64×2= 128

128-40= 88

88+12= 100

hope it helps!

6 0

3 years ago

Find z. Just write the number. Answer should be a whole number. PLS HELP DUE IN 10 MINS WILL GIVE BRAINLIST

Delicious77 [7]

Answer:

square root of 338 or 18.38

Step-by-step explanation:

since a² and b² are equal, you would do 13² plus 13² then add those and you end up with 338. then you find the square root of 338 which is 18.38477631, or 18.38

5 0

3 years ago