Which strategy would not correctly solve this story problem?Ella babysits her baby brother for 30 minutes on Monday, for 45 minutes on Thursday, and for 35 minutes on Friday. Ella will continue this schedule for 6 weeks. How many minutes will Ella babysit in 6 weeks?

A.
Translate into an equation. (30 + 45 + 35) ÷ 6 = m

B.
Use logical reasoning. Add together the number of minutes Ella babysits each week: 30 + 45 + 35 = 110. Multiply 110 by the number of weeks Ella continues this babysitting schedule.

C.
Draw a diagram. Draw 6 large squares. Add up the numbers 30, 45, and 35 to get 110. Write 110 in each square. Add up the numbers in the squares.

D.
Make a table.

Week 1 2 3 4 5 6
Total (minutes): 110 220 330 440 550

Answers

Answer 1

Answer: The strategy or equation which do not solve this problem is letter A and B.
The letter A goes m=(30+45+35)/6, the question asked how many minutes Ella will babysit in six weeks. In a week Ella babysits for 110 minutes, instead of dividing it by 6 weeks (which is shown in the equation of letter A), you have to multiply by 6 weeks. It should go like this, m= (30+45+35) x 6.

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An angle measuring (870n)° is in standard position. For which value of n will the terminal side fall along the positive portion of the y-axis?n = 3
n = 4
n = 5
n = 6

Answers

Answer:

n = 3

Step-by-step explanation:

The terminal side of an angle fall along the positive portion of the y-axis,

If it can written in the form of (90°)a

Where a is any positive odd integer,

Here, the given angle is,

(870n)°,

For n = 3,

Our angle will be 2610°

Its terminal side fall along the positive portion of the y-axis,

If 2610° = (90°)a ⇒ a = 29 ( Positive odd integer )

Thus, for n = 3, the terminal side of the angle (870n)° falls along the positive portion of the y-axis,

For n = 4,

Our angle will be 3480°

Its terminal side fall along the positive portion of the y-axis,

If 3480° = (90°)a ⇒ a = 38.6667 ( Not possible )

Thus, for n = 4, the terminal side of the angle (870n)° does not fall along the positive portion of the y-axis

For n = 5,

Our angle will be 4350°

Its terminal side fall along the positive portion of the y-axis,

If 4350° = (90°)a ⇒ a = 48.333.. ( Not possible )

Thus, for n = 5, the terminal side of the angle (870n)° does not fall along the positive portion of the y-axis,

For n = 6,

Our angle will be 5220°

Its terminal side fall along the positive portion of the y-axis,

If 5220° = (90°)a ⇒ a = 58 ( Not possible )

Thus, for n = 6, the terminal side of the angle (870n)° does not fall along the positive portion of the y-axis.

The answer would be n=3

A student is deriving the quadratic formula. Her first two steps are shown.Step 1: –c = ax2 + bx

Step 2: -c = a[x^2+b/ax]

Which best explains or justifies Step 2?

division property of equality

factoring the binomial

completing the square

subtraction property of equality

Answers

The polynomial in its standard form is:

The student's first step is:

The student's second step is:

The student's second step is to factor the remaining binomial on the right side of the equation.

In this case, the student made a common factor of the letter a.

Answer:

The sentence that best explains or justifies Step 2 is:

factoring the binomial

Answer:

factotoring

Step-by-step explanation:

One recipe for cereal bars uses 5 cups of cereal and 2 1/2 cups of nuts. A different recipe uses 3 cups of cereal and 1 cup of nuts. Which recipe is more nutty?

Answers

The recipe that uses more amount of nuts is the 1st recipe, which uses 2.5 cups of nuts.

What is a fraction?

In mathematics, a fraction is represented by a specific number that designates a portion of an entire. A fraction is a piece or section of a whole, whereby a can have been any number, a particular value, or an object.

As per the information provided in the question,

Total nuts used in 1st recipe = 5/2 = 2.5 cups

Total nuts used in 2nd recipe = 1 cup

Compare the values of nuts used in both recipes.

The number of cups of nuts used in 1st recipe is greater than in the 2nd recipe.

To know more about Fraction:

brainly.com/question/10354322

#SPJ2

2 1/2 because it has more amount of nuts.

What is the perimeter of polygon ABCD?

Answers

Answer:

The perimeter is the sum of the length of the sides of a certain shape. In this case, the perimeter of the polygon would be the sum of the lengths of sides AB, BC, CD, and DA.

Step-by-step explanation:

Lets start computing the length of each side of the polygon. Using points A and B as a first example, we find that the distance between them will be:

$d_(AB)=√((x_A - x_B) ^2+(y_A - y_B) ^2 )$

Where $(x_A , y_A )$ and $(x_B , y_B )$ are the coordinates of points A and B respectively.

From the graph we can see that point A has coordinates (5, 12), B has coordinates (9, 9), C has coordinates (12, 5), and D has coordinates (0, 0). Puting values and computing the lengths we find that:

Lenght AB:

$d_(AB)=√((x_A - x_B) ^2+(y_A - y_B) ^2)=√((5 - 9) ^2+(12 - 9) ^2)$