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Mathematics 22 Online
OpenStudy (anonymous):

MEDAL!! Amber earned $14.50 babysitting on Saturday. On Sunday, she spent $6.95 when she purchased a movie ticket. She needed to borrow money from a friend to complete her purchase of a snack. How much money did Amber pay for the snack if she owes her friend $5? $9.50 $12.55 $16.45 $26.45

OpenStudy (anonymous):

Ok, in order to find this, first you have to do 14.50 - 6.95. That gives you $7.55 left. Then, since Amber owes her friend $5, because the snack cost her her leftover money PLUS the $5, you add 7.55 and 5, to find out that the snack costs $12.55 to get B.

OpenStudy (anonymous):

thx :) can i ask u more questions?

OpenStudy (anonymous):

Sure!

OpenStudy (anonymous):

ok yay!

OpenStudy (anonymous):

Karina is showing her steps to solve the expression −26.7 ÷ . In which step did Karina make an error? Step 1: −26.7 ÷ Step 2: −26.7 ⋅ −3 Step 3: 80.1 Step 1 Step 2 Step 3 There is no error.

OpenStudy (anonymous):

Um, for me it shows lots of Q marks in rhombus's (I added a pic), so will you tell me what it is?

OpenStudy (anonymous):

all you have to do to see the numbers is reload your page

OpenStudy (anonymous):

just reload the website page

OpenStudy (anonymous):

Oh, k

OpenStudy (anonymous):

did it work?

OpenStudy (anonymous):

It doesn't say what -26.7 is divided by.

OpenStudy (anonymous):

what do u mean. show me a pic

OpenStudy (anonymous):

OpenStudy (anonymous):

oh i see :)

OpenStudy (anonymous):

its -26.7 divided by 1/3

OpenStudy (anonymous):

Ok. So, to divide by a fraction, you have to flip it, so it becomes -26.7/1 x 3/1. So, -26.7 basically get multiplied by 3 to get -72.55. She made a mistake by multiplying it by -3, instead of 3, so she made an error in Step 2.

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