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3 years ago

Cara is 14 years old . This is twice as old as her brother . How old is her brother

Mathematics

2 answers:

Alenkinab [10]3 years ago

6 0

Cara's brother is 7 years old.

14 is twice as much as 7 (7 * 2 = 14).

Gre4nikov [31]3 years ago

4 0

Answer:

Step-by-step explanation:

If Cara is twice the age of her brother,

divide 14/2

7, her brother is 7

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4. For f(x) = 1/x-5

ioda

Answer:

g(x) = x^2 +2
f(g(x)) = 1/(x^2 -3)

Step-by-step explanation:

A. g(x) is given:

g(x) = x^2 +2

B. f(g(x)) = f(x^2 +2) = 1/((x^2 +2) -5) . . . . substitute for g(x) and simplify

f(g(x)) = 1/(x^2 -3)

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3 years ago

Pauline withdrew $7.50 from her savings account every day for 3 days. Which expression is the best choice to help her determine

artcher [175]

Answer:

$\$(-7.50)(3\ days)= - 22.50$

Step-by-step explanation:

Given: Pauline withdrew $7.50 each day from her saving account.

She withdrew money for 3 days.

As Pauline is withdrawing the money, therefore the amount will be in negative

Now finding the expression for total amount of money withdrew.

Total money withdrew = $(Money\ withdrew\ each\ day)\times (number\ of\ day)$

∴ Total money withdrew = $\$ -7.50\times 3\ days= - 22.50$

Hence, the expression to determine the total amount of money she withdrew is $(-7.50)(3)= -22.5$ and Total money she withdrew is -$22.5

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3 years ago

A bicycle has a speed of 6 m/s. What is its speed in km/h?<br> (1 km=1000 m)<br> (1 h = 3600 s)

Tems11 [23]

answer:

m/s --- km/h = $\frac{1000}{3600}$

km/h= $\frac{5}{18}$

6m/s= $\frac{6*5}{18}$

6m/s= 1.66 km/h

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2 years ago

41x0x3 what property is this

Drupady [299]

The Multiplication Property of Zero.

It states "the product of any number and zero is zero". Even if there are more than one multiplier - it is still 0.

So 5 x 0 = 0

100 x 0 = 0

41 x 0 x 3 = 0

etc.

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3 years ago

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3 years ago

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