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Savatey [412]
3 years ago
9

Eva has $10 for lunch. Her meal cost $8.60. She wants to leave a 20% tip. Does she have enough money? Explain your reasoning.

Mathematics
1 answer:
snow_tiger [21]3 years ago
6 0
No she doesn't have enough money. All you do is multiply 8.60 by .2 which come out to 1.72 and 8.60 plus 1.73 which equals 10.33 so she needs 33 more cents tone able to tip 20%.
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A right rectangular prism has a length of 4 1/2 feet, a width of 6 1/2 feet, and a height of 8 feet What is the volume of the pr
lilavasa [31]

Alright, lets get started.

The formula of volume for a right rectangular prism = l*w*h

where l denotes length

w denotes width

h denotes height of the prism

Hence the volume of the prism = 4\frac{1}{2}*6\frac{1}{2}*8

So, the volume will be = \frac{9}{2}*\frac{13}{2} *8

So the volume will be = 4.5*6.5*8= 234 cubic feet

So the answer is 234 cubic feet : Answer

Hope it will help :)

3 0
3 years ago
Read 2 more answers
Which number line correctly shows –0.8 + 0.6? A number line going from negative 1.6 to positive 1.6. An arrow goes from negative
Phoenix [80]

Answer:

Hi there, are you sure you didn't forget any parenthesis or signs? I can't find the right answer in the options, the one that would end up at -0.2 in the end I can edit my answer if you tell me some additional option or info about the expression I need to show on the number line

Step-by-step explanation:

which number line shows correctly -0.8 + 0.6?

well lets write it in words minus eight tenths plus six tenths\

so minus:

you go 0.8 units to the left from 0,

then plus:

you go 0.6 units right from -0.8, getting to -0.2

since there is no exact answer like that we can rearrange the addends 0.6-0.8, now:

we go from 0 6 tenths units to the right and get to 0.6, then we go from 0.6 eight tenths unit to the left to get to -0.2

4 0
3 years ago
Read 2 more answers
A 0.3 ml dose of a drug is injected into a patient steadily for 0.65 seconds. At the end of this time, the quantity, , of the dr
Darya [45]
Use the compound interest formula: A=P(1+i)^t.

P is the initial amount of the drug, 0.3ml.
i is - 0.0035.
t is in seconds.

You'll get:
A=0.3(1-0.0035)^t.

Sub in any value on t to find out how many ml are left t seconds after injection.

The 0.65 second injection time does not seem to be relevant as the question clearly states that the exponential decay starts AFTER the injection is completed.
4 0
3 years ago
A registration fee for a used car is 0.8% of the sale price of $5,700. How much is the fee
natima [27]

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{0.8\% of 5700}}{\left( \cfrac{0.8}{100} \right)5700}\implies 45.6

5 0
3 years ago
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Oduvanchick [21]
Step 1: -3(x+2y=3)
Step 2: -3x-6y=-9
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5 0
3 years ago
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