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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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Vadim26 [7]

Answer:

Step-by-step explanation:

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2 years ago

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3 years ago

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3 years ago

3/8+5/16 in lowest terms

Salsk061 [2.6K]

3/8+5/16

=3/8+5/16

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(Decimal: 0.6875)

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2 years ago

Need answers ASSAP

ollegr [7]

Data:
r (radius) = 3.5 in
h (height) = 8 in
Adopt: $\pi \approx3.14$
V (volume) = ?
Ink cost per cubic inch = $0.05/in³
Total cost: ?

Calculate the volume of the paint bucket (its formed being cylindrical), we have:
 $V = \pi *r^2*h$
$V = 3.14 *3.5^2*8$
$V = 3.14*12.25*8$
$\boxed{V = 307.72\:in^3}$

What was the total cost of the paint?

price($)___measure(in³)
0.05 ---------- 1
y -------------- 307.72

It is made the rule of three: (directly proportional)

$\frac{0.05}{y} = \frac{1}{307.72}$
multiply cross
$1*y = 0.05*307.72$
$y = 15.386\:\to\:\boxed{\boxed{y\approx\$15}}\end{array}}\qquad\quad\checkmark$

Answer:
the total cost of the paint is $15

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3 years ago