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natta225 [31]
3 years ago
11

Emily’s mother is 4 times as old as Emily now in 6 years Emily’s mother will be 3 times as old as Emily will be then how old is

Emily now?
Mathematics
2 answers:
mote1985 [20]3 years ago
7 0

Answer:

mother=m

e=emily

m=4e

m+6=3(e+6)

substitute the first equation into the second.

4e+6=3(e+6)

4e+6=3e+18

4e=3e+12

e=12

Emily is currently 12 years old.

frosja888 [35]3 years ago
7 0

Answer:

12 years old.

Step-by-step explanation:

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Given:

Volume of a sphere is \dfrac{28}{3} times the surface area.

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The surface area and the volume of the sphere.

Solution:

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V=\dfrac{4}{3}\pi r^3              ...(i)

Surface area of a sphere:

A=4\pi r^2                      ...(ii)

Where, r is the radius of the sphere.

Volume of a sphere is \dfrac{28}{3} times the surface area.

V=\dfrac{28}{3}\times A

\dfrac{4}{3}\pi r^3=\dfrac{28}{3}\times 4\pi r^2

Multiply both sides by 3.

4\pi r^3=112\pi r^2

\dfrac{\pi r^3}{\pi r^2}=\dfrac{112}{4}

r=28

Using (i), the volume of the sphere is:

V=\dfrac{4}{3}\times \dfrac{22}{7}\times (28)^3

V\approx 91989

Using (ii), the surface area of the sphere is:

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A=9856

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3 years ago
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Step-by-step explanation:

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Consider the following equations: f(x) = 2x – 2 and g(x) = 5 - x
zysi [14]

Answer:

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We can say slope of f(x) is positive  and 3 more than slope of g(x) while slope of g(x)  is negative.

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We can say the y-intercept of g(x) is positive and 7 units above f(x) while y-intercept of f(x)  is negative.

Step-by-step explanation:

Given equation:

f(x) =2x - 2

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We need to find the difference of slopes and y-intercepts of the given equations.

The standard form of a slope intercept equation of line is given by:

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Answer:

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