Mathematics Middle School

An equation is incorrectly solved below
Equation: 2+3= −4
Step 1: 2+3−3= −4−3
Step 2 :2= −1
Step 3 :2x/2=-1/2
Step 4: =−1/2

What is the irst step that shows an error inthe solution to the equation?
a.Step 1
b.Step 2
c.Step 3
d.Step 4

Answers

Answer 1

Answer:

B. Step 2

Step-by-step explanation:

2= −1 is incorrect. -4 - 3 is not -1, it's -7.

Hope this helps!

Answer 2
step 2 is incorrect.

Related Questions

A cereal packaging machine can fill ​15 oz boxes at a rate of ​3 boxes every ​2 minutes. Production has scheduled ​600 lbs to be processed during each ​8 -hour shift.

Answers

Answer:  75 boxes

Step-by-step explanation: If you divide 600 by 8 you get 75.

20 points to whoever gets these right!! <3

20 points to whoever gets these right!! &lt;3
20 points to whoever gets these right!! &lt;3

Answers

Answer:

1st one 8/20

Step-by-step explanation:

Last one is the two way tables it should be 6/8

Giovanni buys a sweater at a store. The normal price is $30 but the sweater is on sale for 25% off.

a) How much in dollars will Giovanni save from the sale?

b) What is the sale price of the sweater?

c) The next week, Giovanni goes back to the same store and sees the same sweater. Now it’s on sale for $18. What is the percent decrease from the original $30 price to the new $18 price?

Giovanni buys a sweater at a store. The normal price is $30 but the sweater is on sale for 25% off.a)

Answers

Answer:

Step-by-step explanation:

a. 7.50

b. 22.50

c. 40%

A.) $7.5
B.) $22.5
C.) 60% decrease

Liz's age is two-thirds of Debbie's age. Debbie's age is half of Freya's age. what is the ratio of Liz's age to Freya's age?

Answers

Answer:

Let's start by using variables to represent the ages of the three people:

Let L be Liz's age.

Let D be Debbie's age.

Let F be Freya's age.

From the problem, we know that Liz's age is two-thirds of Debbie's age, so we can write:

L = (2/3)D

We also know that Debbie's age is half of Freya's age, so we can write:

D = (1/2)F

To find the ratio of Liz's age to Freya's age, we need to express Liz's age and Freya's age in terms of a common variable. Since we have an equation relating Debbie's age to Freya's age, we can use that as the common variable. From the equation D = (1/2)F, we can solve for F in terms of D:

F = 2D

Now we can substitute this expression for F into the equation for Liz's age:

L = (2/3)D = (2/3)(1/2)F = (1/3)F

So Liz's age is one-third of Freya's age. The ratio of Liz's age to Freya's age is therefore 1:3.

The ratio of Liz’s age to Freya’s is 1:3

the probability of spinning an odd number on a spinner is 62 percent . What is the probability of not spinning an odd number?

Answers

Subtract the percent of getting odd from 100 percent.

100 - 62 = 38%

solve the inequality: -3x - 5 _> 7

Answers

Answer:

x< -4

Step-by-step explanation:

Help PLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEASE

Help PLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEASE

Answers

Answer:

y = 7x - 16

Step-by-step explanation:

slope = y2-y1/x2-x1

slope = 12 - (-9)/4-1

slope = 7

Y-intercept = -9-7

Y-intercept = -16

Y = 7x-16

Y= 7x-16

I think this is correct check

The table represents linear function F

The table represents linear function F

Answers

Answer:

D

Step-by-step explanation:

First we need to find the rate of change of function F. Function F have a slope/rate of change of (24-18)/(6-4)=6/2=3. Next we compute the slope/rate of change of Function G which is 4. Hence D is the answer

i’m just tryna ask my own question

Isabella invests money in an account paying a simple interest of 4.5% per year. If no money will be added or removed from the investment, what should she multiply her current balance by to find her total balance in a year in one step?
Please help! I am terrible at math.

Answers

Answer:

multiple by .045 with her current balance

So first you need IPR I= interest (.045) P= 0 R= Rate (1) multiply all of that and you got the answer

2. The graph shows a proportional relationship between the number of prairie dogs in a community and the amount of grass they eat per week.

2. The graph shows a proportional relationship between the number of prairie dogs in a community and

Answers

Answer:

A.3,000 prairie dogs

B. 18,000 pounds  

C. 6 pounds per prairie dog

Step-by-step explanation:

A. Use graph

B. 2000x9=18,000

C.18000 divided by 3000= 6

*Give 5 stars*

Please add explaination

Please add explaination

Answers

You count the number of blocks in hight then in length and multiply the answers
It’s around 18 count the inner blocks and see if the ones that aren’t full blocks are equal Im pretty sure it’s 18 I might be wrong if I am that’s embarrassing for me.

Which of the following number lines represents the solution to m/-2 - 7 = -9?

Which of the following number lines represents the solution to m/-2 - 7 = -9?
Which of the following number lines represents the solution to m/-2 - 7 = -9?
Which of the following number lines represents the solution to m/-2 - 7 = -9?
Which of the following number lines represents the solution to m/-2 - 7 = -9?

Answers

Answer:

Hey there!

m/-2-7=-9

m/-2=-2

m=4

Find the number line with a dot on the 4!

Hope this helps :)

at the toy store, Caleb and his younger brother, Gabe, each used money they had saved to buy Motor Mystery boxes. The convertibles are their favorite cars to get! Out of the 30 cars in Caleb's Jumbo box, 12 were convertibles. Out of the 10 cars in Gabe's Mini box, 4 were convertibles. Did the boxes have the same ratio of convertibles to total cars?
no links please

Answers

Answer:

Yes.

Step-by-step explanation: As you can see the Caleb's Jumbo box's ratio is 12/30, and the Gabe's Mini box's ratio is 4/10. If you divide both the numerator and the denominator by 3 for Caleb's Jumbo box's ratio it becomes:

12/30= 4/10.

So we can see that the boxes have the same ratio.

Yes. If you simply 12/30 it would lead to 4/10 and then 2/5 but you get the point. The answer is yes

i need help with this question please help me

i need help with this question please help me

Answers

Answer:

The answer is D.

Step-by-step explanation:

y = mx + b

C = 5/9 (F - 32)

C = 5/9F - 5/9 (32)

Option (D) is correct.

Write the absolute value equations in the form x−b=c (where b is a number and c can be either number or an expression) that have the following solution sets:
1. x= 2 and x=14
2. one solution : x=15

Answers

Answer:

Step-by-step explanation:

uhhhhh you should count by 2

Yeah the one above this is correct

When finding the distance on a coordinate plane, what MUST be used? 2. What is the intersection of the X and Y-axis called?
NEED HELP ASAP

Answers

Answer:

the Pythagorean Theorem

Step-by-step explanation:

Used to find distance on a coordinate plane

can some one help me pls

can some one help me pls

Answers

I’m 90% sure it’s E.

What is the measurement of the longest line segment in a right rectangular prism that is 11.2 centimeters​ long, 6.6 centimeters​ wide, and 6 centimeters​ tall?

Answers

Answer:

Step-by-step explanation:

3.1313109

Answer: the answer should equal 3.131

Step-by-step explanation: as this is the measurement of the longest line in right rectangular prism.

Please got brainliest

Name 4 line segments that have point C as an endpoint.

Name 4 line segments that have point C as an endpoint.

Answers

well, if you can go up down and sideways, I'd say, B, F, G, and D

I would probably say B, F, G, and

The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.


Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside


Part A: Calculate the measures of center. Show all work. (2 points)

Part B: Calculate the measures of variability. Show all work. (1 point)

Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)

Answers

To calculate the measures of center, we need to find the mean and median for each school.

For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26

To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5

For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21

To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5

Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).

Range: The range is the difference between the largest and smallest values in the dataset.

For Mountain View School:
Range: 9 - 0 = 9

For Seaside School:
Range: 9 - 0 = 9

Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.

For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4

For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5

To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.

Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
Part A:

For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.

For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.

Part B:

For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.

For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.

Part C:

If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.

Can someone help me please^^

Can someone help me please^^

Answers

Answer:

\( \frac{15}{ \frac{5}{4} } = 15 \times \frac{4}{5} = 12\)

C is the correct answer.

I need help with this problem it's about percents

I need help with this problem it's about percents

Answers

Answer:

95%

Step-by-step explanation:

So the fraction of the amount of balls Kayla hit is 19/20 if you multiply 19 and 20 by five, you will get the fraction 95/100, so Kayla hit 95% of the balls pitched to her.

Answer:

95%

Step-by-step explanation:

Percentage is written as the favourable outcomes, divided by the total outcomes

The favourable outcome here is the 19 hits

The total outcomes is 20

Now, we divide 19/20

19/20 = 0.95 = 95%

Another way is to multiply the fraction by 5/5 to get 95/100

Since percentage is based on 100, you can take 95 as your percentage

-Chetan K

Mr. Toney gets his car washed every 15 days. Mr. Brown gets his car washed every 20 days. Today, they are both getting their cars washed. IN how many days will they both be getting their car washed?
HELP NEEDED ASAP

Answers

They both get their cars washed on every 60th day.


You can solve this equation by finding the lcm (least common multiple):

15 30 45 60 75 90 105

20 40 60 80 100

The lowest common multiple is 60 as it is the first multiple the two have in common.

So, in sixty days, they’ll both get their car washed again

They will both be getting their car washed in 60 days.

Toney: 15, 30, 45, 60
Brown: 20, 40, 60
Count the amount of days (or multiply) until the days for both match up

Solve for x. Then, find m∠FDG and m∠GOF. answers: 1) x = 29; m∠FDG = 66°; m∠GOF = 126° 2) x = 28; m∠FDG = 64°; m∠GOF = 116° 3) x = 27; m∠FDG = 62°; m∠GOF = 118° 4) x = 24; m∠FDG = 56°; m∠GOF = 106°

Solve for x. Then, find mFDG and mGOF. answers: 1) x = 29; mFDG = 66; mGOF = 126 2) x = 28; mFDG = 64;

Answers

Answer:

3) x = 27; m∠FDG = 62°; m∠GOF = 118°

Step-by-step explanation:

2x + 8 + 4x + 10 = 180

6x + 18 = 180

6x = 162

x = 27

Answer:

x = 27; m∠FDG = 62°; m∠GOF = 118°

Step-by-step explanation:I took the test

Help me please il give 20 points!

Help me please il give 20 points!
Help me please il give 20 points!
Help me please il give 20 points!

Answers

Answer: 1. a. 15     b. 11     c. 2     d. 7     e. 5.5

2.  Stem:                   Leaf:

        1                           9

        2                         5, 9

        3                        3, 3, 8

        4                        0, 7, 9

        5                          4, 5

        6                           1, 5

        7                           2, 7

        8                             1

3. a. 13 inches        b. I'm pretty sure that it is the second quarter because there is more snow.           c. The first quarter because it's section is more spread out among the numbers.

Step-by-step explanation:

Answer: 1. a. 15 b. 11 c. 2 d.7 e. 5.5
2. Stem:
Leaf:
9
2
5, 9
3
3, 3, 8
4
0, 7, 9
5
4, 5
6
1,5
7
2, 7
8
1
3. a. 13 inches
b. I'm pretty sure that it is
the second quarter because there is more show.
c. The first quarter because it's
section is more spread out among the numbers.
Step-by-step explanation:

Shape A is enlarged to give shape B

a) what is the scale factor of the enlargement?

b) mark with a cross the centre of enlargement

Please help me, I need the answer by Friday 17th June, thanks!

Shape A is enlarged to give shape B a) what is the scale factor of the enlargement?b) mark with a cross

Answers

a)2.5 because look at how much it’s enlarged by
It’s 3 cuz big shape divided by da small shape is 3 and usin da isolation method we will get 3

Please help me! im on an assignment an cant figure it out

Please help me! im on an assignment an cant figure it out

Answers

Step-by-step explanation:

The difference beteen 9.2 ounces and 8.1 ounces is  1.1 ounces

   and the difference in price is   .49

       so 1.1 ounces cost .49

           $ .49 / 1.1 oz = $  .445  per ounce

Then Reid's bowl should cost   7.8 oz  * $ .445 / oz = $3.47

7.78 I think I don’t remember

James buys 4 hats at $12.99 each. How much does she spend

Answers

$51.96.

12.99 per hat multipled by 4 is 51.96
James has $3.24! If you divide the $12.99 between 4 hats, the would still have $3.24 left. Hope this helped :)

Math question someone pls explain how to answer it I am stuck pt.6

Math question someone pls explain how to answer it I am stuck pt.6

Answers

Answer:

1/5 or 20%

Step-by-step explanation:

Probability = favorable outcomes

                   total num. of outcomes

Probability =  2

                      10

Find the GCF, 2.

2 ÷ 2 = 1

10 ÷ 2 = 5

1/5

sorry if it's wrong

Answer:

The probability of choosing a green shirt is 20%=1/5=.2

Step-by-step explanation:

find the total amount = 10

Find the total of question (probability of choosing green) = 2

set as a fraction:

Numerator = amount needed (2)

Denominator = all things/objects involved (10)

PS*

With probability there is a good chance the answer is going to be less than 1 or 100%, knowing that can help to tell which number goes in what place of the fraction

ex:

10/2=5=500% (this can't be the answer)

So Flip it 2/10=.2=20% (This seems more of a reasonable answer)

A mirror frame in the shape of an oval is shown below. The ends of the frame form semicircles:
An oval is formed by a rectangle with semicircles at each end. The length of the rectangle is 54 inches. The width of the rectangle is 27 inches.

Which of the following is the perimeter of the inner edge of the frame?

(π = 3.14)

192.78 inches
246.78 inches
277.56 inches
331.56 inches

please help lol

Answers

Answer:

The answer is 192.78 inches

Step-by-step explanation:

An oval is formed by a rectangle with semicircles at each end. We can visualize this easily.

The length of the rectangle is 54 inches.

The width of the rectangle is 27 inches.

The perimeter of rectangle is =  

=  

= 162 inches

And because there are two semicircles, we can combine them to form a circle. So, perimeter of a circle is called a circumference.

The width of the rectangle forms the diameter, so its half will be the radius.

r =  

The circumference is given by :  

=  inches

Now as the described oval shape is a complete figure without lines inside, we will subtract the width of both sides of the rectangle from the complete perimeter.

The complete perimeter is =  inches

The inner edge perimeter will be =  = 192.78 inches

pls mark as brainliest

Answer:

1st option

Step-by-step explanation:

Other Questions
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