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12. Mrs. Melissa is purchasing Supplies for her classroom. She spent $3.50 for 25 erasers. At this rate
how much does 1 eraser cost, in dollars and cents?
Use the boxes below to plan your answer. Make sure that you record your final answer by typing in
the box provided on the online answer sheet.
Positive values CANNOT have a (+) sign in Edugence.
Negative values MUST have a (-) sign in Edugence.
(2011.0
+/-

Answer:

$26.00

ad the picture Step-by-step explanation: it would be better if i had the pictrue but t ook the unshaded plus the shaded and got $26.00

Answer:

The correct answer is $26.00

Step-by-step explanation:

 $21.00

+$  5.00

________

 $26.00

Answer:

18.3

18.3 only has three significant figures while the other numbers have more

An experimental study involves the researcher seeking to affect the results on purpose. The given situation is an observational study.

Since the researcher needs to find if a certain medicine improves the symptoms of the flu, therefore, the objective is to find out what influence a certain therapy has on the result. Hence, the given situation is an observational study.

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Answer:

33

Step-by-step explanation:

33= 11 * 3

99= 11 * 3 * 3

Answer:

33.

Step-by-step explanation:

33 = 3*11

99 = 3*3*11

The common factors are 3 and 11 so the GCF = 3*11 = 33.

Answer:

B

Step-by-step explanation:

decreasing is a key word meaning negitive

Answer:

B

Step-by-step explanation:

Decrease shows negative and also if temperature decreases , it mostly is negative

Answer:

It's the one with only one line.

Step-by-step explanation: The cross and angle looking one both only have one solution and the parallel lines have no solutions.

The squares represent a visual representation of equivalent fractions. Each square is divided into a certain number of equal parts, and the number of parts that are shaded in represents the numerator of the fraction. The total number of parts the square is divided into represents the denominator of the fraction.

In the first square, it is divided into 23 equal parts and 8 of them are shaded in. Therefore, the fraction represented by that square is 8/23.

In the second square, it is divided into 812 equal parts and 23 of them are shaded in. Therefore, the fraction represented by that square is 23/812. Since both squares are divided into the same number of equal parts, the fractions 8/23 and 23/812 represent the same quantity, just in different forms. Therefore, they are equivalent fractions.

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Answer:

The expression represents the price you paid per gallon is:

Step-by-step explanation:

To identify the expression is right, I'll show you with an example: suppose that you paid $56 buying 7 gallons of gas, now you can replace those values in the expression I gave you:

And you can check this value by multiplying the price paid by the gallon and the number of gallons, which you obtain the number of dollars you spent:

Answer:

\(+5\sqrt{5} and -5\sqrt{5}\)

Step-by-step explanation:

The radicals are \(+5\sqrt{5} and -5\sqrt{5}\)

as                 \(5\sqrt{5}* 5\sqrt{5} = 125\)

also              \(-5\sqrt{5} *-5\sqrt{5} = 125\)

Answer:

The y-intercept and slope are wrong. In this problem, they are mixed up.

Step-by-step explanation:

In an equation like that, the y-intercept not supposed to be attached to the x. In this problem, the y-intercept point would be 4, not -3. Instead, the -3 represents the slope (rise/run).

Option c. 2

Among the given targets, two targets are correctly described:

Regarding chemical pesticide use, the target is to reduce it by 50% by 2050. This aligns with the vision presented in the Green Food System Strategy.

In terms of chemical fertilizers, the target is to reduce the use of chemical fertilizers produced in Japan from fossil fuels by 30% by 2050. This target is also consistent with the strategy's vision.

The remaining two targets are not correctly described:

The target of expanding the organic market and increasing the ratio of organic farming to arable land to 30% (1 million hectares) by 2050 is not mentioned in the given options.

The target of reducing household food loss by half from the FY2000 level by 2030 is also not mentioned in the given options.

Therefore, the correct answer is option c. 2, as two of the targets are accurately described in the provided options.

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Answer:

99

Step-by-step explanation:

There are 5 numbers between 50 and 100 that are multiples of 11:

55, 66, 77, 88, 99

Of these, 3 are not multiples of 2:

55, 77, 99

Only one is a multiple of 3:

99

Answer:

194.4

Step-by-step explanation:

The remainder is 4

Answer:

The answer is C

Step-by-step explanation:

I may be wrong but you need to line the decimal

Answer:

yz = 14*28 = 392

Step-by-step explanation:

gimme brainliest

Answer: 56

Step-by-step explanation:

yz

Lets rewrite it

When you have two terms next to each other, it means multiply.

Therefore, we can rewrite this as

(14) x (4)

y times z

14 x 4 = 56

Answer:

248 + 7x = 360

Step-by-step explanation:

x = 16

Answer:

4175.40384   Dutch guilders

Step-by-step explanation:

The main objective here is to convert the currency at hand (2,000 swiss francs) to Dutch guilders. In order to achieve that ; we need first require to convert the currency at hand into United states dollars

So ; if 1 swiss francs  =  1.0328 united states dollars  (as at Wednesday)

Then 2000 swiss francs  will be = 2000  ×  1.0328 united states dollars  = 2065.6 united states dollars

SO; if  1 united states dollars = 2.0214 Dutch guilders ( as at Wednesday)

Then 2065.6 united states dollars will be = 2065.6 × 2.0214

= 4175.40384   Dutch guilders

Answer:

closest would be 3,500

Step-by-step explanation:

Answer:

50 % alcohol solution = 10 millimetres

30 % alcohol solution = 90 millimetres

Step-by-step explanation:

two equations can be derived from this question

x + y = 100 equation 1

0.3x + 0.5y = 100 x 0.32 = 32

0.3x + 0.5y = 32 equation 2

where :

x = 30% alcohol solution

y = 50% alcohol solution

multiply equation 1 by 0.3

0.3x + 0.3y = 30 equation 3

subtract equation 3 from 2

0.2y = 2

y = 10

substitute for y in equation 1

x + 10 = 100

x = 100 - 10

x = 90

To find the correct equations for the missing boxes, we need more information about the relationships between the different activities in Jake's Gems. However, based on the given context, we can make some assumptions and suggest potential equations:

Mining and Cutting activities produce diamonds, rubies, and other gems. Let's assume that the production of each gem type is represented by a variable: D (diamonds), R (rubies), and G (other gems).

Maintenance supports the Mining and Cutting activities. We can assume that the maintenance effort required for each activity is represented by the variable M (maintenance).Since the question mentions five missing boxes, we can suggest additional equations to represent relationships between these variables, such as:

Mining + Cutting = D + R + G (the sum of all gem types produced equals the total production from Mining and Cutting activities).

Maintenance = M (maintenance effort required).

The relationships between these variables might include equations like D = f(M), R = g(M), G = h(M), where f, g, and h represent some functions or formulas that relate gem production to maintenance effort.

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The dimensions of the rectangle are 10 feet (length) and 8 feet (width).

To find the dimensions of the rectangle with an area of 80 square feet and a width that is 2 feet less than the length,

follow these steps:

1. Let the length of the rectangle be L feet and the width be W feet.

2. According to the given information, W = L - 2.

3. The area of a rectangle is calculated by multiplying its length and width: Area = L × W.

4. Substitute the given area and the relationship between L and W into the equation: 80 = L × (L - 2).

5. Solve the quadratic equation: 80 = L² - 2L.

6. Rearrange the equation: L² - 2L - 80 = 0.

7. Factor the equation: (L - 10)(L + 8) = 0.

8. Solve for L: L = 10 or L = -8 (since the length cannot be negative, L = 10).

9. Substitute L back into the equation for W: W = 10 - 2 = 8.

So, the dimensions of the rectangle are 10 feet (length) and 8 feet (width).

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Answer:

5,5,15

Step-by-step explanation:

Using the Euclidean inner product the

(a) projvu = (-1, -1)

(b) projuv = (1, 1)

(a) To find projvu, we need to calculate the projection of vector u onto vector v. The formula for the projection of u onto v using the Euclidean inner product is projvu = (u · v) / ||v||^2 * v. Given u = (-3, 4) and v = (1, 1), we can calculate:

projvu = ((-3, 4) · (1, 1)) / ||(1, 1)||^2 * (1, 1)

projvu = (-3 + 4) / (1^2 + 1^2) * (1, 1)

projvu = 1 / 2 * (1, 1)

projvu = (1/2, 1/2)

Therefore, projvu = (-1, -1) (rounded to whole numbers).

(b) To find projuv, we need to calculate the projection of vector v onto vector u. Using the same formula as before, but with u and v swapped, we get:

projuv = ((2, -1, 1) · (2, 1, 1)) / ||(2, 1, 1)||^2 * (2, 1, 1)

projuv = (4 - 1 + 1) / (2^2 + 1^2 + 1^2) * (2, 1, 1)

projuv = 4 / 6 * (2, 1, 1)

projuv = (4/6 * 2, 4/6 * 1, 4/6 * 1)

projuv = (8/6, 4/6, 4/6)

Simplifying, we get projuv = (4/3, 2/3, 2/3).

Therefore, projuv = (1, 1) (rounded to whole numbers).

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Answer:

300kg

Step-by-step explanation:

x = kilograms of butter used this month

A bakery used 25% more butter this month than last month.

x = 240 * 1.25

x = 300

Answer:

300kg

Step-by-step explanation:

So if the bakery used 240kg

60 is 25%

240 + 60 = 300kg this month

So, the total butter used this month is 300 kilograms

Answer:

Bottom Left

Step-by-step explanation:

We can check by seeing the numbers with the tens place that has the digit 1.

We have numbers 10, 10, 15, 15, 15

That means one's digit values of 0, 0, 5, 5, 5

The bottom left is the only option.

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer: bottom left

Step-by-step explanation:

The expected value of y is (D.) 35.5.

The expected value of a discrete random variable is found by multiplying each value of the variable by its corresponding probability and then summing these products. In this case, the probability distribution of y is given in the table.

To find the expected value of y, we need to calculate the sum of the products of each value of y and its corresponding probability.

y * probability = y * P(y)

The expected value of y is E(y) = 100.10 + 200.25 + 300.05 + 400.30 + 500.20 + 600.10

= 2 + 5 + 1.5 + 12 + 10 + 6 = 37.

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Answer:

a radius

b diameter

Step-by-step explanation:

a radius is any segment from the center to the edge of a circle. a diameter is any segment from edge to edge of a circle through the center.

The equation of the line would be y = (-1/4)x.

Option (D) is correct.

What is the slope-intercept form of a line?

The slope-intercept form of a line is a way of representing the equation of a line in the form y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept is the point at which the line crosses the y-axis.

From the graph, we can say that the line is passing through the points (-4, 1) and (4, -1)

So slope = -1/4.

And the y-intercept is 0. as the line is passing through the origin.

So by using a slope-intercept form of a line, we can write

y = mx + c

y = (-1/4)x+0

y = -1/4x

Hence, the equation of the line would be y = (-1/4)x.

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The equation for money collected m for h boxes of chocolate bars sold is m = 30h.

We are given that the band is selling every bar of chocolate for $1.50

Now, they have boxes of chocolate, with every box containing 20 bars of chocolate in them.

Hence if we are going to calculate the amount of money collected on selling one box it will be

20 X $1.5

= $30

We need to find the equation for the amount of money collected based on the number of boxes of chocolate bars sold.

We have been given that money collected should be represented b m while the number of chocolate boxes sold should be represented by h

Now we know that

Money collected = price per box X no.of boxes sold

we have already calculated the price per box hence we get

m = 30h

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