Ask question

Ask question

All categories

AleksAgata [21]

3 years ago

10

Linda started taking piano lessons she had to 13 /4each day and if after only 8 days Linda decided she wanted to stop how many h

ours did she take lessons ?

1 answer:

nikitadnepr [17]3 years ago

6 0

Answer:

224

Step-by-step explanation:13/x8=28 so 28X8=224

You might be interested in

A rectangular tank that is 5324 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes

marishachu [46]

Answer:

Side of 22 and height of 11

Step-by-step explanation:

Let s be the side of the square base and h be the height of the tank. Since the tank volume is restricted to 5324 ft cubed we have the following equation:

$V = s^2h = 5324$

$h = 5324 / s^2$

As the thickness is already defined, we can minimize the weight by minimizing the surface area of the tank

Base area with open top $s^2$

Side area 4sh

Total surface area $A = s^2 + 4sh$

We can substitute $h = 5324 / s^2$

$A = s^2 + 4s\frac{5324}{s^2}$

$A = s^2 + 21296/s$

To find the minimum of this function, we can take the first derivative, and set it to 0

$A' = 2s - 21296/s^2 = 0$

$2s = 21296/s^2$

$s^3 = 10648$

$s = \sqrt[3]{10648} = 22$

$h = 5324 / s^2 = 5324 / 22^2 = 11$

4 0

3 years ago

Divide. −4 1/3 ÷ −2 3/5 A. 1 2/3 B. 1 4/5 C. 2 1/5 D. 2 3/5

Inga [223]

a. $1 \frac{2}{3}$

trust me it's the correct answer :)

7 0

3 years ago

What is the value of the 5 in the number 7.522

joja [24]

Its 0.5. Which would be in fraction form 5/10 meaning its 5 tenths.

8 0

3 years ago

Please help help help help help please ASAP

lora16 [44]

Answer

~~~~~~~~~~~~

slope: 1

y intercept: 4

equation: y=x+4

6 0

2 years ago

Holly deposited $10,000 in an investment account. After 6 years the account is worth approximately $13,400. Which formula repres

anyanavicka [17]

A=p(1+r)^t
13400=10000(1+r)^6
Solve to find the interest rate
r=((13,400÷10,000)^(1÷6)−1)×100
r=4.99%=5%

7 0

3 years ago