Ask question

Ask question

All categories

Sergeeva-Olga [200]

2 years ago

9

Khalid buys story books from an online store. Each book costs AED12.99 and shipping fee is charged at AED 4.95 for all the books

together. Which expression could Khalid use that would represent the cost of purchasing his books?

1 answer:

oksano4ka [1.4K]2 years ago

5 0

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

You might be interested in

PLS HELP ME WITH THIS QUESTION!!!!!

sergiy2304 [10]

Answer:

D is the answer

Step-by-step explanation:

4 0

2 years ago

How is this expression written with exponents? 3 . 3 . x . x . x . x

marin [14]

Solve:-

Write it down again:-

3 · 3 · x · x · x · x

We will write it like this:-

3 · 3 · x³

7 0

3 years ago

You sent the same email message to 10 of your friends. The numbers of hours it took them to reply were 1, 1, 1, 2, 2, 3, 4, 5, 5

Katarina [22]

Median is 5
Mean is 4.9
Mode is 1

7 0

3 years ago

Read 2 more answers

An animator draws 120 cels to make a 5 seconds of a 12-second sequence of a film. How many more cels does she need to draw to co

s344n2d4d5 [400]

Answer:

She needs 168 more cels to draw to complete the film sequence

Step-by-step explanation:

120 Cells in 5 seconds

You want 12 seconds.

Ratio (Proportion)

120:5

Lets find the "unit rate" of the proportion.

120/5 = 24

So the unit ratio is 24:1

Now, we can deduce to it being:

120:5

240:10

264:11

288:12

She has 120 done.

So, 288-120 = 168.

She needs 168 more cels to draw to complete the film sequence

4 0

2 years ago

In a memory experiment, Alice is able to memorize words at a rate given by m '(t)= - 0.009t^2 + 0.6t. In the same memory exper

White raven [17]

Answer:

1) Ben, 2) $\Delta = 2$ , 3) $\dot m = 2.7$ , 4) $\dot M = 2.9$

Step-by-step explanation:

1) Ben has a higher rate of memorization, since the coefficient of the second power is lesser than the one from Alice.

2) The number of words can be estimated by integrating the function:

Alice

$\Delta m = -0.003\cdot (10\,min)^{3} + 0.3\cdot (10\,min)^{2}$

$\Delta m = 27$

Ben

$\Delta M = -0.001\cdot (10\,min)^{3} + 0.3\cdot (10\,min)^{2}$

$\Delta M = 29$

$\Delta = \Delta M - \Delta m$

$\Delta = 2$

3) The average amount of words per minute is:

$\dot m = \frac{27}{10}$

$\dot m = 2.7$

4) The average amount of words per minute is:

$\dot M = \frac{29}{10}$

$\dot M = 2.9$

4 0

3 years ago