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Marat540 [252]
3 years ago
14

Melissa had $24 dollars to spend on school supplies. After buying 10 pens, she had $12.20 left.

Mathematics
2 answers:
vaieri [72.5K]3 years ago
6 0

Answer:

And the question is?

Step-by-step explanation:

Haha, im joking,  It should be 11.8. (Mixed it up)

Leya [2.2K]3 years ago
4 0

Answer: She spent $11.8

Step-by-step explanation:

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Evaluate the expression 2ab 3+ 6a 3 - 4ab2 when a=2 and b=4.<br> a.176<br> b.180<br> c.215<br> d.216
Tom [10]
The first step for solving this expression is to insert what a and b stand for into the expression. This will change the expression to the following:
2(2)(4)³ + 6(2)³ - 4(2)(4)²
Now we can start solving this by factoring the expression
2(2 × 4³ + 3 × 2³ - 4 × 4²)
Write 4³ in exponential form with a base of 2.
2(2 × 2^{6} + 3 × 2³ - 4 × 4²)
Calculate the product of -4 × 4².
2(2 × 2^{6} + 3 × 2³ -4³)
Now write 4³ in exponential form with a base of 2.
2(2 × 2^{6} + 3 × 2³ -2^{6})
Collect the like terms with a base of 2.
2(2^{6} + 3 × 2³)
Evaluate the power of 2³.
2(2^{6} + 3 × 8)
Evaluate the power of 2^{6}.
2(64 + 3 × 8)
Multiply the numbers.
2(64 + 24)
Add the numbers in the parenthesis.
2 × 88
Multiply the numbers together to find your final answer.
176
This means that the correct answer to your question is option A.
Let me know if you have any further questions.
:)
5 0
2 years ago
A population of insects increases according to the law of exponential growth. After 2 days of growth there are 100 insects. Afte
Fantom [35]

Answer:

I think its A so hope this helps

3 0
3 years ago
What does a residual value of 0.8 mean in reference to the line of best fit?
notka56 [123]

Answer:

i think its -The given point is 0.8 units above the line of best fit

Step-by-step explanation:

only because if it were -0.8 it would be below the line

6 0
2 years ago
Read 2 more answers
$34,300 loan at 3.5% for 4 months.
cestrela7 [59]

keeping in mind that 4 months is not even a year, since there are 12 months in a year, 4 months is then 4/12 years.

let's assume is simple interest.


\bf ~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$34300\\ r=rate\to 3.5\%\to \frac{3.5}{100}\dotfill &0.035\\ t=years\to \frac{4}{12}\dotfill &\frac{1}{3} \end{cases} \\\\\\ A=34300\left[ 1+(0.035)\left( \frac{1}{3} \right) \right]\implies A= 34300(1.011\overline{6})\implies A=34700.1\overline{6}

5 0
3 years ago
I’m confused on this
Colt1911 [192]
Angle ABC would equal 36 degrees because angleDBC is congreunt to angle ABD.
8 0
3 years ago
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