admin

2 months ago

Guest #1676

2 months ago

We have been given the steps to solve the equation as

Step 1: 2x = 18

Step 2: x = 18 − 2

Step 3: x = 16

There is an error in step 2.

We have

x is in multiplication with 2. So in order to get rid of 2 from the left hand side, we perform opposite operation of multiplication i.e. division.

So we must divide both sides by 2.

**Therefore, A is the correct option.**

**A) She did not divide 18 by 2.**

Guest #1677

2 months ago

The answer is b. 18/2=9

Question

What number is 21% of 450

Solution 1

Since percent means per hundred, you are basically asking how many is 21 per hundred of 450.

To calculate 21 of 450, we solve the the problem by using the following formula: (X*Y)/100 where X=21 and Y=450.

Thus, when we enter 21 and 450 into our formula, we get this:

(21*450)/100 = answer

First we multiplied 21 by 450 and then we divided that by 100. When we did this, we found the answer to be 94.5.

Therefore, 21 percent of 450 is 94.5.

To calculate 21 of 450, we solve the the problem by using the following formula: (X*Y)/100 where X=21 and Y=450.

Thus, when we enter 21 and 450 into our formula, we get this:

(21*450)/100 = answer

First we multiplied 21 by 450 and then we divided that by 100. When we did this, we found the answer to be 94.5.

Therefore, 21 percent of 450 is 94.5.

Solution 2

The answer would be 94.5

21% of 450 is 94.5

21% of 450 is 94.5

Question

PLEASE HELP !Barry has an ice tray that makes ice cubes shaped like a cone with a diameter of 2 cm and height of 2 cm. To the nearest cubic centimeter, what is the volume of an ice cube from Barry's tray? 2 cm³ 8 cm³ 25 cm³ 101 cm³

Solution 1

To the nearest cubic centimeter, the volume of an ice cube would be 2 cm³. The formula for a cone is πr²(h/3), and when you divide the diameter by 2, you get one, so the formula would turn into π1²(2/3), giving you the answer.

Question

This table shows the size, in acres, of four large water parks. What is the median of the sizes of the four water parks? 60 acres 63 acres 64 acres 65 acres Park Size (in Acres) A 66 B 70 C 60 D 60

Solution 1

The median of this list of numbers is 63.5 acres (not given).

The median of a set of data is the middle value. If you order the 4 numbers you have:

60 63 64 65

The middle is in between 63 and 64, therefore the median is 63.5.

The median of a set of data is the middle value. If you order the 4 numbers you have:

60 63 64 65

The middle is in between 63 and 64, therefore the median is 63.5.

Solution 2

**Answer:**

65 i think

**Step-by-step explanation:**

Question

Ming wrote the table of points below. x y 5 10 10 20 15 30 Which explains whether or not Ming has described a proportional relationship, and why? Ming has described a proportional relationship because the ordered pairs are linear and the line passes through the origin. Ming has not described a proportional relationship. Although it is a linear relationship, it does not pass through the origin. Ming has not described a proportional relationship. Although it passes through the origin, it is not a linear relationship. Ming has described a proportional relationship because the line does not pass through the origin.

Solution 1

**Answer:**

Option A.

**Step-by-step explanation:**

The given table is

x y

5 10

10 20

15 30

From the given table it is clear that the value of y increases by 10 when the value of x increases by 5. It means the rate of change is constant.

So, the given table represents a linear relationship.

If a linear function passes through the two points then the equation of line is

The linear function passes through (5,10) and (10,20), so the equation of line is

For x=0,

It means it passes through the origin, i.e., (0,0).

Ming has described a proportional relationship because the ordered pairs are linear and the line passes through the origin.

**Therefore, the correct option is A.**

Solution 2

This is a proportional relationship.

If you drew the points and made a line, it would pass through the origin. Also, all you need to do is multiply the x value by 2 and you have the y-value.

If you drew the points and made a line, it would pass through the origin. Also, all you need to do is multiply the x value by 2 and you have the y-value.

Question

What is the total cost of $ 2.95 notebook plus 5 %

Solution 1

First, you convert 5% to decimal. For your info, percents are always equal to 100. So, you divide 5 by a 100, which gives you 0.05. Then, you multiply 2.95 by 0.05. 2.95 x 0.05 is 0.1475 which is about 0.15. Then, you add 0.15 to 2.95. The total cost of a $2.95 notebook plus 5% is about $3.10.

Question

PLEASE HELP!!! Explain why the graph of quadratic function could not contain both a minimum vertex and maximum vertex at the same time.
Your explanation should be 3-4 sentences and include at least 6 of the following words.
-parabola
-U-shaped graph
-vertex
-minimum
-maximum
-Y-value of the vertex
-X-value of the vertex
-quadratic function

Solution 1

A parabola, a graph of a quadratic function, cannot have a maximum vertex and a minimum vertex at the same time because of the shape of the graph. A parabola is a u-shaped graph. The vertex of the parabola is the point where the u changes direction; if it was increasing, it starts to decrease, and if it was decreasing, it starts to increase. Since a parabola only changes direction once, there will either be a minimum or a maximum, not both.

Solution 2

**Answer:**

アップダウンは世の常

クズ引いたって動じない

**Step-by-step explanation:**

Question

PLEASE HELP!!!!! I WILL FAIL MATH IF I DONT GET THIS RIGHT!!! WILL MARK BRAINLIEST!!!!! What is 60 scaled down by a factor of 1/10?
ERGENT

Solution 1

You can do this a number of ways.

The first way is to set up a proportion. That's very formal, and is most respected.

x / 60 = 1 / 10 The proportion is reduced by a factor of 10. Cross Multiply.

10 * x = 60 * 1

10x = 60 Divide by 10

x = 60/10

x = 6

Beginning number * scale factor = Final result.

60 * 1/10 = Final Result

60 * 1 / 10 = Final Result

Final Result = 6

This method words even when the numbers are quite complicated.

Question

Explain in real life scenario in which opposite quantities combine together to make 0.

Solution 1

Example:

You owe someone $45.75 which is -45.75. You are able to pay that person the $45.75 which is positive and equivalent to the amount of money you owe. Add them together and you will get 0, meaning you don't owe them any money anymore.

You owe someone $45.75 which is -45.75. You are able to pay that person the $45.75 which is positive and equivalent to the amount of money you owe. Add them together and you will get 0, meaning you don't owe them any money anymore.

Question

Look at Hayley's budget below. Find the percentages associated with each category of her budget: Monthly net income: $3,000
Expenses:
Housing: $815.00
Healthcare: $225.00
Transportation: $625.00
Utilities: $110.00
Food: $375.00
Student Loan Payment: $270.00
Savings: $250.00
Other Expenses: $330.00
20 points!! Please put them in percents!!

Solution 1

Expenses:

Housing: $815.00

Healthcare: $225.00

Transportation: $625.00

Utilities: $110.00

The percentage of money that she uses in her expenses from her budget are:

Food: $375.00 = 375 is 12.5% of 3000

Student Loan Payment: $270.00 =270 is 9% of 3000

Savings: $250.00 =250 is 8.33333333333% of 3000

Other Expenses: $330.00=330 is 11% of 3000

Plz branliest

Housing: $815.00

Healthcare: $225.00

Transportation: $625.00

Utilities: $110.00

The percentage of money that she uses in her expenses from her budget are:

Food: $375.00 = 375 is 12.5% of 3000

Student Loan Payment: $270.00 =270 is 9% of 3000

Savings: $250.00 =250 is 8.33333333333% of 3000

Other Expenses: $330.00=330 is 11% of 3000

Plz branliest

Question

The Daytona 500 is a 500-mile Nascar race that normally takes about 3.5 hours to complete. How many minutes does it take to complete this 500-mile race? What is the Order of Magnitude of the number of seconds it takes to complete the race?

Solution 1

We have been given that it takes 3.5 hours to complete 500-mile Nascar race.

We know that

**1 hour = 60 minutes**

**and 1 hour = 3600 seconds.**

Therefore, when we calculate the time taken in minutes we need to multiply 3.5 to 60 and to find the time to complete the race in seconds we need to multiply 3.5 by 3600.

Thus, the time taken to complete the race

**Hence, it takes 210 minutes to complete the race.**

Now, let us find the time in seconds. The number of seconds to complete the race is

**Therefore, the order of magnitude of the number of seconds is 4.**

Solution 2

210 minutes.

10^4 seconds.

__________

10^4 seconds.

__________

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