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3 years ago

PLEASE CLICK THE INAGE I NEED HELP PLEEEAAASSSE!!!

Mathematics

2 answers:

morpeh [17]3 years ago

5 0

Answer:

Question 3: There are 12 boys in the class.

Question 4: 120 cookies were not oatmeal raisin.

Question 5: Target offers the best deal.

Step-by-step explanation:

If the ratio of girls to boys is 3:2, and there are 18 girls, that means there will be $\frac{18}{3}$ * 2 = 6 * 2 = 12 boys.

Because there are 200 cookies total, and $\frac{2}{5}$ of them are oatmeal raisin, that means that $\frac{3}{5}$ of the cookies aren't oatmeal raisin. 200 * $\frac{3}{5}$ = 40 * 3 = 120 cookies that aren't oatmeal raisin.

The cookies at Kroger have a unit rate of $0.45 per cookie, the cookies at Meijer have a unit rate of $0.50 per cookie, the cookies at Walmart have a unit rate of $0.38 per cookie, and the cookies at Target have a unit rate of $0.20 per cookie. So Target has the better buy.

ivann1987 [24]3 years ago

3 0

Step by step explanation

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Simplify the expression shown. (3m4n)2

laiz [17]

Answer:

9m⁸n²

Step-by-step explanation:

(3m⁴n)² Remove parentheses

= 3²m⁸n² Square the 3

= 9m⁸n²

6 0

4 years ago

What will be the value of

madreJ [45]

The expression as given doesn't make much sense. I think you're trying to describe an infinitely nested radical. We can express this recursively by

$\begin{cases}a_1=\sqrt{42}\\a_n=\sqrt{42+a_{n-1}}\end{cases}$

Then you want to know the value of

$\displaystyle\lim_{n\to\infty}a_n$

if it exists.

To show the limit exists and that $a_n$ converges to some limit, we can try showing that the sequence is bounded and monotonic.

Boundedness: It's true that $a_1=\sqrt{42}\le\sqrt{49}=7$ . Suppose $a_k\le 7$ . Then $a_{k+1}=\sqrt{42+a_k}\le\sqrt{42+7}=7$ . So by induction, $a_n$ is bounded above by 7 for all $n$ .

Monontonicity: We have $a_1=\sqrt{42}$ and $a_2=\sqrt{42+\sqrt{42}}$ . It should be quite clear that $a_2>a_1$ . Suppose $a_k>a_{k-1}$ . Then $a_{k+1}=\sqrt{42+a_k}>\sqrt{42+a_{k-1}}=a_k$ . So by induction, $a_n$ is monotonically increasing.

Then because $a_n$ is bounded above and strictly increasing, the limit exists. Call it $L$ . Now,

$\displaystyle\lim_{n\to\infty}a_n=\lim_{n\to\infty}a_{n-1}=L$

$\displaystyle\lim_{n\to\infty}a_n=\lim_{n\to\infty}\sqrt{42+a_{n-1}}=\sqrt{42+\lim_{n\to\infty}a_{n-1}}$

$\implies L=\sqrt{42+L}$

Solve for $L$ :

$L^2=42+L\implies L^2-L-42=(L-7)(L+6)=0\implies L=7$

We omit $L=-6$ because our analysis above showed that $L$ must be positive.

So the value of the infinitely nested radical is 7.

4 0

3 years ago

The original cost of a pair of jeans was $50. The jeans are now on sale for $48. What is the percent of change of the cost of th

aleksandrvk [35]

4%

(50 x 4)/100 = $2.00

50 - 2.00 = $48.00

7 0

3 years ago

A Web site defines a regular polygon as “a polygon with all angles the same measure.” Is this definition valid?

grandymaker [24]

Answer:

Yes, because all regular polygons fit this definition.

Choice D is correct

Step-by-step explanation:

A polygon is said to be regular if it is equiangular that is all its angles are equal and equilateral which implies that all its sides have equal length. Examples of regular polygons include;

Regular pentagon

Regular octagon

3 0

3 years ago

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HOW CAN THE DISTANCE FORMULA HELP ME DETERMINE WHETHER A QUADRILATERAL ON A COORDINATE PLANE IS A PARALLELOGRAM

Dominik [7]

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3 years ago

PLEASE CLICK THE INAGE I NEED HELP PLEEEAAASSSE!!!​

PLEASE CLICK THE INAGE I NEED HELP PLEEEAAASSSE!!!