Mathematics Middle School

NEED HELP ASAP
Alan used the expression StartFraction 5 over 9 EndFraction (F minus 32), where F is a temperature in degrees Fahrenheit, to convert a temperature from Fahrenheit to Celsius. He evaluated the expression as shown below and found that 45 degrees Fahrenheit was equivalent to –7 degrees Celsius.

StartFraction 5 over 9 EndFraction (F minus 32) = StartFraction 5 over 9 (45 minus 32) = 25 minus 32 = negative 7

What error did Alan make?
He substituted 45 for F instead of –7 and should have found the answer to be Negative 21 and two-thirds degrees Celsius.
He did not combine within the parentheses first before multiplying and should have found the answer to be 7 and StartFraction 2 over 9 EndFraction degrees Celsius.
He multiplied 45 by the fraction incorrectly and should have found the answer to be 49 degrees Celsius.
He divided 5F by 9 before subtracting 32 and should have found the answer to be 21 and StartFraction 4 over 9 EndFraction degrees Celsius.

Answers

Answer 1

Answer:

Kk

Step-by-step explanation:

Answer 2

Answer:

THE ANSWER IS B.

SORRY FOR REALLY LATE REPLY!! lol im a year late

Step-by-step explanation:

got it right on edge:)

Related Questions

What is x
-3/4x=-3+3x

Answers

Answer:x =4/5

Step-by-step explanation:

{3}{4}x=-3+3x

4/5 -3/4x4/5 = -3+3x

Given:
f(x)=xˆ2-6x+13
What is f(4)?
A. -8
B. -7
C. -3
D. 3
E. 5

Answers

Just plug 4 in
E. 5 is the answer
Given:f(x)=x2-6x+13What is f(4)?A. -8B. -7C. -3D. 3E. 5

Hope this helps you

Answer: E 5

fx) = x^2 -6x+13

Let x=4

f (4) = 4^2 -6(4) +13

      = 16 -24 +13

      = 5

There are 22 students in the class. Make two groups such that the first group has 8 students less than the second one.


Answer should look like:
The numbers of students in groups are ___ and ___ .

Answers

Answer: The number of students in groups are 7 and 15

Step-by-step explanation:

7+15=22

15-7=8

Giving brainliest!!!!!!!!!!!!

Giving brainliest!!!!!!!!!!!!

Answers

Answer:

c

Step-by-step explanation:

4 is considered the median which is whichever value is in the middle, 3 3 4 4 6

the range describes the distance between the smallest value and the largest value, thus the data spans 3in between the lowest value of 3 and the largest value of 6

Turn these equations into Standard Form. Pls show the steps on how you did it.
y=-2x-3/2
y=4/5x-10
y=11/8x+6
y=1/3x-2
y=-6/5x-3

Answers

let me help you step by step

1 y+2x=-3/2
2y+4=-3
4x+2y=-3

2. y-4/5x=-10
5y-4x=-50
-4x+5y=-50
4x-5y=50

3. y-11/8x=6
8y-11x=48
-11x+8y=48
11x-8y=-48

4. y-1/3x=-2
3y-x=-6
-x+3y=6

5. y+6/5x=-3
5y+6x=-15
6x+5y=-15

Help me find the values of x

1. 2x+1=9

2. 4x+3=19

3. 3x-2=7

Answers

1.) x = 4
2.)x = 4
3.)x= 3
1. x = 42. x = 43. x = 3

____________________________________________________

If there's addition, use subtraction to find the value.If there's subtraction, use addition to find the value.

x(y) means to multiply x with y

____________________________________________________

1. In the first problem, we need to subtract 1 from 9 since there is an addition:

9 – 1 = 8

Next, divide 8 by 2, and we get:

8 ÷ 2 = 4

This means that x = 4

Finally, check the answer by:

2(4) + 1 = 9

2. In the second problem, we need to subtract 3 from 19 since there is an addition:

19 – 3 = 16

Next, divide 16 by 4, and we get:

16 ÷ 4 = 4

This means that x = 4

Finally, check the answer by:

4(4) + 3 = 19

3. In the third problem, we need to add 2 with 7 since there is subtraction:

2 + 7 = 9

Next, divide 9 by 3, and we get:

9 ÷ 3 = 3

This means that x = 3

Finally, check the answer by:

3(3) – 2 = 7

Hope this helps :)

Which list orders the numbers from least to greatest?

Negative 2.4, negative 1.5, negative 2 and one-fourth, negative 3, negative 1 and one-eighth

A number line going from negative 4 to positive 4.
Negative 1 and one-eighth, negative 1.5, negative 2 and one-fourth, negative 2.4, negative 3
Negative 3, negative 2.4, negative 2 and one-fourth, negative 1.5, negative 1 and one-eighth
Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5
Negative 1.5, negative 1 and one-eighth, negative 2.4, negative 2 and one-fourth, negative 3

Answers

Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth


Hope my answer helps you✌️

Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5 is the list that orders the numbers from least to greatest.

The circumference of a circular park is approximately 18 feet. What is the approximate area inside the circular park?

Answers

Answer:

25.685 square feet.

Step-by-step explanation:

Circumference = 2 * π * radius

From this, we can derive the formula for the radius:

radius = Circumference / (2 * π)

Let's substitute the value of the circumference and calculate the approximate radius:

radius = 18 / (2 * π)

radius ≈ 18 / (2 * 3.14159)

radius ≈ 2.865 feet

Now that we have the approximate radius, we can calculate the area:

Area ≈ π * radius²

Area ≈ 3.14159 * (2.865)²

Area ≈ 3.14159 * 8.193225

Area ≈ 25.685 square feet

Therefore, the approximate area inside the circular park is approximately 25.685 square feet.

We know that the circumference of a circle is given by:

C = 2πr

where C is the circumference and r is the radius of the circle.

In this case, we are given that the circumference is approximately 18 feet, so we can set up the following equation:

18 = 2πr

Solving for r, we get:

r = 9/π ≈ 2.864 feet

Now we can use the formula for the area of a circle:

A = πr^2

Substituting the value we found for r, we get:

A = π(2.864 ft)^2 ≈ 25.85 ft^2

Therefore, the approximate area inside the circular park is approximately 25.85 square feet.

Multiply.
(−2.1)⋅(−1.4)

Multiply.(2.1)(1.4)

Answers

C , 2.94

Two negatives - • - = + equal a positive

Answer:

(-2.1) x (-1.4) = 2.94

Step-by-step explanation:

May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I only need 10 more brainliest to become a genius! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!

QUICKLY I NEED MORE HELP!! NO WRONG ANSWERS!!!!

You select a marble without looking and then put it back. If you do this 25 times, what is the best prediction possible for the number of times you will pick a marble that is not blue?

LOOK AT IMAGE

QUICKLY I NEED MORE HELP!! NO WRONG ANSWERS!!!!You select a marble without looking and then put it back.

Answers

Answer:

15

Step-by-step explanation:

Green is 3/5 of the set.

3/5 of 25 is 15.

Answer:

15 times

Step-by-step explanation:

Assuming that you are picking the marbles without replacement, the probability of picking a marble that is not blue is 3/5. This is because there are 3 green marbles and 2 blue marbles in the bag, so out of 5 possible outcomes, 3 of them are not blue.

To find the best prediction for the number of times you will pick a marble that is not blue in 25 trials, you can multiply the probability by the number of trials. This gives you 3/5 x 25 = 15. So, the best prediction is that you will pick a marble that is not blue 15 times out of 25.

PLEASE ANSWER ALL QUESTIONS!!! I'LL GIVE 30 PTS TO WHOEVER ANSWERS!! Find the area of each shape. (sorry if it's hard to read)

PLEASE ANSWER ALL QUESTIONS!!! I'LL GIVE 30 PTS TO WHOEVER ANSWERS!! Find the area of each shape. (sorry

Answers

Answer:

Rectangle's is 28

Step-by-step explanation:

We multiply 9 * 4 to get rectangless shape and then we substract squares (2) shape 2*2*2

(9*4) - (2*2*2)= 28

(9*4)=36
(2*2*2)=4

36-4=28

Please answer quickly and correctly, and add the steps to solving the math equation!

Please answer quickly and correctly, and add the steps to solving the math equation!

Answers

^^^^^^^^^^^^^^^^^^^^^
A=21
B= -21
C= Negative or (-) because 2x2=4
Then -2x2=-4 so -4x4=16
A negative times a positive = a negative

so basically you can just tell me where the boxes go and bam you get 20 points

so basically you can just tell me where the boxes go and bam you get 20 points

Answers

Step-by-step explanation:

(2/3)(-4)(9) = -24

(5/16)(-2)(-4)(-4/5)= -2

(-3/4)(7/8)=-21/32

(2 3/5) (7/9)=91/45

(2/3) x (-4)(9) -> -24
(5/6) x (-2)(-4) x (-4/5) -> -2
(-3/4) x (7/8) -> -21/32
(2 3/5) x (7/9) -> 91/45

When a spaceship full of scientists landed on Planet Q, they found that 17/40 of the 160 aliens had 3 eyes. How many aliens had 3 eyes?

Answers

Answer:

68 aliens

Step-by-step explanation:

Take the fraction of aliens that had 3 eyes and multiply by the number of aliens

17 / 40 * 160 =

17 * 160/40

17 *4

68

Help, quickly if possible.

Help, quickly if possible.

Answers

Answer: D

Step-by-step explanation:

Hope this helps!

Answer:

D

Step-by-step explanation:

because you need to multiply 9 and s together and you get add 10 to

(make s into whatever number you want)

You have a pizza with diameter 12
2
3 in., and a square box that is 12.65 in. across. Write 12
2
3 as a decimal. Can you fit the pizza inside the​ box?
What is the decimal expansion for 12
2
3​?
A.12.6
B.12.65
C.12.6
D.12.66
pls help me

Answers

Answer:

D is the right choice and no you cannot fit the pizza inside the box.

Step-by-step explanation:

D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.

Answer:

I believe the answer is D.

Step-by-step explanation:

GOOGLE

PLEASE HELP ASAP. im stuck

PLEASE HELP ASAP. im stuck

Answers

Answer:

A=-1 B=1

Step-by-step explanation:

When in top left it will be negative bottem right positive.

Yes that is correct A= -1 and B= 1

I need help with this question, I'm not very good at math and all help is appreciated!

I need help with this question, I'm not very good at math and all help is appreciated!

Answers

Answer:

A

Step-by-step explanation:

We can solve for H by isolating it on one side of the equation, as follows:

J/H - I/H = G

Taking H as the common denominator:

(J - I)/H = G

Multiplying both sides by H:

J - I = GH

Adding I to both sides:

J = GH + I

Dividing both sides by G:

H = (J - I)/G

So the answer is

(A)

H = (J - I)/G.

Answer:   A

Step-by-step explanation:

\(\frac{J}{H} = G + \frac{I}{H}\)                >Since you are solving for H bring I/H to the other side

                                   by subtracting I/H from both sides

\(\frac{J}{H}- \frac{I}{H} = G\)               >There is a common denominator so you can

                                   combine the fractions

\(\frac{J-I}{H} = G\)                   >Multiply both sides by H or cross multiply whichever

                                  way your mind things about how to get H on top

\(J-I = G(H)\)           >Divide both sides by G

\(\frac{J-I}{G} = H\)                   >Answer is A

Determine the line of reflection.

Reflection across x = 4
Reflection across y = 4
Reflection across the x-axis
Reflection across the y-axis

Determine the line of reflection. Reflection across x = 4 Reflection across y = 4 Reflection across the
Determine the line of reflection. Reflection across x = 4 Reflection across y = 4 Reflection across the

Answers

Answer:

The correct answer:

Reflexion across x = 4

Answer:

The correct answer:

Reflexion across x = 4

-5 - +23 =

Negative five added by positive twenty three is equal to ?

Answers

\(\huge\boxed{\sf{Hello\:there!}}\)

-a-(+b)=-a-b

Let's use this rule to solve our math problem:

-5-(+23)

-5-23

-28

\(\huge\boxed{\boxed{Hope\:it\:helps!}}\)

\(\huge\bold{Good\:luck!}\)

\(\huge\mathfrak{LoveLastsAllEternity}\)

-5+23= 18
Explanation:
The signs are different so we subtract and take the sign of the bigger number. 23-5=18 and the bigger number is 23 so you take it’s sign which is + so ur final answer should be 18 or +18 same thing basically.

During the month of august, Mr. Amazon received junk mail on 25 of those days. What is the relative frequency of Mr. Amazon receiving junk mail?

Answers

Answer:

1.24

Step-by-step explanation:

To find the relative frequency, divide the frequency(f) by the total number of data values (n)

31 days in August / 25 = 1.24

Sarah is walking hope from school. She decides to buy a candy bar and a soda from the convenience store. The soda costs 2.39 and the candy bar costs 1.69. What was the total cost of her snacks?

(I made this question up for fun so u dont have to answere it)

Answers

Answer:

$4.08

Step-by-step explanation:

Answer:

I think... $4.08 maybe... I may be wrong lol actually that's it..

Sarah is walking hope from school. She decides to buy a candy bar and a soda from the convenience store.

A bag has 8 red marbles, 4 green marbles, and 2 yellow marbles. Bill draws a red marble from the bag and does not replace it. What is the probability of Bill drawing a yellow marble next? A. 1/7 B. 1/13 C. 2/13 D. 1/14

Answers

I think the probability of Bill drawing a yellow marble is 2/13.

Answer:

c. 2/13

Step-by-step explanation:

The bag starts with 8 red marbles, 4 green marbles, and 2 yellow marbles. Since he draws a red marble from the bag and does not replace it, there will be one less marble.

So now there are 7 red marbles, 4 green marbles, and 2 yellow marbles. Add the number of marbles together and then find the probability of drawing a yellow marble.

7+4+2 = 13

2/13

So the probability of Bill drawing a yellow marble would be 2/13.

Gabriel worked for 19.5 hours helping his grandfather at his auto shop. If Gabriel was paid $497.25, how much did he earn per hour?

Answers

Answer:

25,5

Step-by-step explanation:

i divided the money in the hours

He made $25.05
You just divide $497.25 by 19.5.

Using Fraction Bars to Divide
3 fraction bars. Each bar is labeled 1 with 5 boxes containing one-fifth underneath each bar.

Divide: 3 divided by two-fifths
7
7 and one-fifth
7 and one-half
8

Using Fraction Bars to Divide3 fraction bars. Each bar is labeled 1 with 5 boxes containing one-fifth

Answers

Answer is 7.5 which is 7 1/2 meaning the answer is 7 and one-half.

Answer:

7 and one half

Step-by-step explanation:

Got it right on edge

Using Fraction Bars to Divide3 fraction bars. Each bar is labeled 1 with 5 boxes containing one-fifth

PLEASE HURRY!!!!! Which statement describes the situation shown in the graph?

PLEASE HURRY!!!!! Which statement describes the situation shown in the graph?

Answers

Answer:

Sales increase with a decrease in the price.

Step-by-step explanation:

It is a cause the sales decrease when the price is higher

help!! its a part A and part b question
(don't mind my answer for A I pressed it by accident)

help!! its a part A and part b question(don't mind my answer for A I pressed it by accident)

Answers

Answer:

2cm is 5km

Step-by-step explanation:

16cm is 40km

Answer: 4e+6 centimeters

Step-by-step explanation:

Multiply the length value by 100000 and you'll get your answer.

40x100000= 4e+6 (Multiplied by length value).

Study the dashed arrows in the image.

A diagram of the Earth rotating on its axis. A red horizontal line through the center of the Earth shows the Equator. A double headed arrow runs vertically through the center of the Earth and is labeled Intended path. A line begins at the bottom right of the Earth, curves to pass through the center, and ends in the top right.

What causes the arrows to move in this direction?

Earth rotating
air moving to the poles
Earth’s equator
wind moving over short distances

Answers

Answer:

earth rotaiting

Earth rotating hope this helps

help please
Manuel ate \(\frac{1}{3}\) of crakers on a plate. His brother ate \(\frac{1}{4}\) of crackers. There were 5 crackers left on the plate. How many crackers were there, to begin with?

Answers

1/3 + 1/4 = 4/12 + 3/12 = 7/12
7/12 = both brothers ate 7 crackers out of 12 crackers

there were 5 crackers left on the plate means 5/12 crackers left on the plate

answer: 12 crackers at the begining
It was one seventh a fraction with one with seven under

Solve 2(x + 7) = 28

A. x= 10.5
B. x= 14
C. x=21
D. x=7

Answers

The answers is D. x=7
the answer is x = 7!!!
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