All categories

3 years ago

1. Emily is allowed to spend 60% of her allowance. The remaining 40% she deposits into her

Mathematics

2 answers:

kkurt [141]3 years ago

4 0

Answer:

5

Explanation:

40x 200
—— ——
40 40
X=5

stellarik [79]3 years ago

4 0

he gets $5.00 for her allowance

You might be interested in

Find the price per unit for each item, then choose the best buy. a. Cereal, 10 oz. box for $5.90 would b. Cereal, 24 oz. box for

brilliants [131]

The Best Buy would be the 24 oz. box.

4 0

3 years ago

Find the perimeter of the figure below, in feet.

Sergeu [11.5K]

Answer:

add all and multiply it by 2

Step-by-step explanation:

i don't kniw

3 0

2 years ago

The sum of three consecutive odd integers is 69. find the integers

Marta_Voda [28]

Let the integers be x-2, x, x+2.

Given,

x -2 + x + x + 2 = 69

3x = 69

x = 23

Hence, the integers are 21, 23 and 25.

6 0

2 years ago

Barb and John each have a savings account with a sum of money in it. Barb and John each begin to add a set amount of money each

BigorU [14]

Answer:

The answers are, "John saves $35 dollars the first week" and "John is saving at a faster rate than Barb"

8 0

3 years ago

Read 2 more answers

The sum of the first number cubed and the second number is 500 and the product is a maximum.

soldier1979 [14.2K]

We are given the following information:

the sum of the first number cubed and the second number is 500

their product is a maximum

We are looking for the 2 missing numbers.

To answer this, let's represent the two numbers as x and w.

From the given, we can form the following equation:

$x^3+w=500$

We can then express y as:

$w=500-x^3$

We can express their product as:

$x(500-x^3)=500x-x^4$

To find the maximum value of x, let's solve for the derivative of -x^4 + 500 x.

$\begin{gathered} f(x)=-x^4+500x \\ f^{\prime}(x)=-4x^3+500 \end{gathered}$

Then we solve for the value of x where f'(x) = 0.

$\begin{gathered} -4x^3+500=0 \\ -4x^3=-500 \\ x^3=125 \\ x=5 \end{gathered}$

Then we use x = 5 to solve for the second number, w.

$\begin{gathered} w=500-x^3 \\ w=500-5^3 \\ w=500-125 \\ w=375 \end{gathered}$

Therefore, the two numbers are 5 and 375.

3 0

11 months ago