Ask question

Ask question

All categories

2 years ago

11

Mona is four years older than Karly.

1 answer:

Yuri [45]2 years ago

5 0

Answer:

Let karly's age be x

mona is four years older

mona = 4+x

Alexis it twice as old as mona

alexis= 2(4+x)

alexis= 8+2x

the sum of their ages is 48

x + 4+x + 8+2x= 48

4x+12=48

4x=48-12

4x=36

x=9

katly is nine years old

mona = 4+x

mona = 4+9

mona = 13

mona is 13 years old

alexis = 8+ 2x

alexis = 8+ 2(9)

alexis = 8+18

alexis = 26

alexis is 26 years old

You might be interested in

A catering company’s recipe for salad uses a ratio of 2 c of dressing to 4 lb of vegetables. Draw a model for the ratio. Write t

s2008m [1.1K]

The ratio of dressing to vegetable in its reduced form is determined by dividing the amount of dressing by the amount of vegetables. This will give us the answer of,
2 c / 4 lb
In its simplest form, we divide both the numerator and denominator by 2 and the final answer would be,
1 c / 2 lb

7 0

3 years ago

The surface area of a given cone is 1,885.7143 square inches. What is the slang height?

kap26 [50]

Answer:

If $r >> h$ , the slang height of the cone is approximately 23.521 inches.

Step-by-step explanation:

The surface area of a cone (A) is given by this formula:

$A = \pi \cdot r^{2} + 2\pi\cdot s$

Where:

$r$ - Base radius of the cone, measured in inches.

$s$ - Slant height, measured in inches.

In addition, the slant height is calculated by means of the Pythagorean Theorem:

$s = \sqrt{r^{2}+h^{2}}$

Where $h$ is the altitude of the cone, measured in inches. If $r >> h$ , then:

$s \approx r$

And:

$A = \pi\cdot r^{2} +2\pi\cdot r$

Given that $A = 1885.7143\,in^{2}$ , the following second-order polynomial is obtained:

$\pi \cdot r^{2} + 2\pi \cdot r -1885.7143\,in^{2} = 0$

Roots can be found by the Quadratic Formula:

$r_{1,2} = \frac{-2\pi \pm \sqrt{4\pi^{2}-4\pi\cdot (-1885.7143)}}{2\pi}$

$r_{1,2} \approx -1\,in \pm 24.521\,in$

$r_{1} \approx 23.521\,in \,\wedge\,r_{2}\approx -25.521\,in$

As radius is a positive unit, the first root is the only solution that is physically reasonable. Hence, the slang height of the cone is approximately 23.521 inches.

3 0

2 years ago

Simplify equation 8m²n³+16M⁴n²

gulaghasi [49]

Answer:

your answer is 24m n hope this helps

Step-by-step explanation:

8 0

2 years ago

Ten little monkeys were jumping on a bed. There is a 35% chance that one will fall off and bump his head. In the bedroom next do

valina [46]

Answer:

Explanation is in a file

Step-by-step explanation:

3 0

2 years ago

30. The average of a list of 4 numbers is 92.0. A new list

klasskru [66]

<u><em>Answer:</em></u>

H. 94.0

<u><em>Explanation:</em></u>

The original list: $a _1$ $a _2$ $a _3$ $40$

The new list: $a_1$ $a_2$ $a_3$ $48$

$\frac{a_1+a_2+a_3+40}{4} =92$

$a_1+a_2+a_3=92$ × $4-40=328$

$\frac{a_1+a_2+a_3+48}{4} =\frac{328+48}{4} =94$

3 0

2 years ago