Ask question

Ask question

All categories

3 years ago

12

Riley is saving up to buy a new television. She needs a total of $968.58. Riley has saved $200.78 already and earns $76.78 per w

eek at her job. How many weeks does Riley need to work to save enough money to buy the new television?

1 answer:

attashe74 [19]3 years ago

8 0

968.58=200.78+76.78w
-200.78
767.8=76.78w
/76.78
=10w
Riley must save for 10 weeks

You might be interested in

Find the unit rate kenny reads 5/8 pages in 2/3 minutes

Cerrena [4.2K]

.9375 pages / 1 minute

or 15/16 pages for every 16/16 minute.

4 0

3 years ago

Convert the complex number z = 4 - 10i from rectangular form to polar form.

mrs_skeptik [129]

ANSWER

$r = 2 \sqrt{29} ( \cos(292 \degree) + \sin(292 \degree))$

EXPLANATION

The polar form of a complex number ,

$z = x + yi$

is given by:

$z = r( \cos( \theta) + i \sin( \theta) )$

where

$r = \sqrt{ {x}^{2} + {y}^{2} }$

The given complex number is:

$z = 4 - 10i$

$r = \sqrt{ {4}^{2} + {( - 10)}^{2} }$

$r = \sqrt{16 + 100}$

$r = \sqrt{116} = 2 \sqrt{29}$

And

$\theta= \tan^{ - 1}(\frac{ y}{x} )$

$\theta= \tan^{ - 1}(\frac{ - 10}{4} )$

$\theta= 292 \degree$

Hence the polar form is :

$r = 2 \sqrt{29} ( \cos(292 \degree) + \sin(292 \degree))$

6 0

3 years ago

Does a polygon usually have more sides or angles?

Arisa [49]

Polygons include
triangles
rectangle
square
pentagon
hexagon
etc.

7 0

3 years ago

Read 2 more answers

ONLY THE BRAINLIEST OF USERS ANSWER THIS QUESTION 30 POINTS!!!!!!!!!!!!!!!

denis23 [38]

Answer:

8*5^n-1 / 2^n-1 = n

This is the function for your sequence

3 0

3 years ago

Read 2 more answers

Given centerB with m∠ABD = 95 degrees

kirill [66]

Answer:

It would be the fourth one to me Yw

Step-by-step explanation:

8 0

3 years ago