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3 years ago

PLEASE I NEED HELP ASAP

Mathematics

1 answer:

Amanda [17]3 years ago

4 0

Yes there is enough ribbon for a bow

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the age of Jane is 80% of the age of Alice. If we add both ages the result is 45. Find the age of Jane and Alice

inysia [295]

Answer:

Age of Alice=25 years

Age of Jane=20 years

Step-by-step explanation:

We are given that the age of Jane is 80 % of the age Alice.

We have to find the age of Jane and Alice.

Let x be the age of Alice

According to question

Age of Jane=80% of Alice=80% of x= $\frac{80}{100}\times x=\frac{4x}{5}$

$x+\frac{4x}{5}=45$

$\frac{5x+4x}{5}=45$

$\frac{9x}{5}=45$

$x=\frac{45\times 5}{9}=25$

Age of Alice=25 years

Age of Jane= $\frac{4}{5}\times 25=20 years$

Age of Jane=20 years

5 0

4 years ago

¿Cuál es el valor de la razón de cambio cuando tenemos un vaso con agua a temperatura ambiente al congelador por 15 minutos?

grandymaker [24]

Answer: $2 \°C/min$

Step-by-step explanation:

The rate of change is a measure in which one variable is modified in relation to another. In this case we have the variables:

Temperature in $\°C$

Time in $min$

Now, to calculate the rate of change, we have to divide one variable by the other. In this case the change in temperature $\Delta T$ divided by the time variation $\Delta t$ .

Hence, assuming the ambient temperature of the glass is $30 \°C$ and the elapsed time $15 min$ we have:

$\frac{\Delta T}{\Delta t}=\frac{30 \°C}{15 min}=2 \frac{\°C}{min}$

5 0

4 years ago

Formula for mean wait time

agasfer [191]

Answer:

the forumal to find thr mean is the sum of terms divided by the number of terms.

8 0

4 years ago

What is the length of an arc cut off by an angle of 3 radians on a circle of radius 8 inches?

Inessa [10]

A formula for arc length, s, given the radius, r and central angle, Ф (in radians) is s = r × Ф.

s = 8 × 3 = 24 inches

5 0

3 years ago

Gabriel is signing up for a gym membership with a one-time fee to join and then a monthly fee to remain a member. The the monthl

seraphim [82]

Answer;

T=100+40c

Step-by-step explanation:

T is the total cost so everything has to add up to that. 100 is a flat cost, plus 40 dollars a month for however long you stay with that program.

5 0

3 years ago