Mathematics Middle School

Hannah wanted to check her solution of b=-3 for the equation 9/7 (1+b)-6/7b 1=1 . Substituting b for -3, she writes the following:
A. 9/7(1+(-3))-6/7b+1=1
B. 9(1+(-3))-6(-3)-7=7
C. 9(1+(-3))+18+7=7
D. 6-18+7=7
E. -12+7=7 -5=7
F. -5=7
In which line did Hannah make a mistake? Choose one.

Answers

Answer 1

Answer:

B

Step-by-step explanation:

Answer 2
Answer is
B
Step equation

Related Questions

Help please I have no idea how :(

Answers

Answer:

1

Explanation:

The open dot shows greater than and/or less than, but the closed dot is greater than or equal to and/or less than or equal to

Answer:

Step-by-step explanation:

i think the last

someone please answer this question for me!

Answers

Answer:

Distribute them out:

[tex]-\frac{5}{8} (-3)+(-\frac{5}{8})(-7)[/tex]

Answer:

-3, -5/8, -7

Step-by-step explanation:

When distributing you multiply the term outside the parentheses with all of the inside ones

Hopes this helps please mark brainliest

Write the math sentence as an equation: Negative eight times the sum of a number and 14.6 is 31.2.

−8r + 14.6 = 31.2
−8(r + 14.6) = 31.2
−8(r − 14.6) = 31.2
−8r − 14.6 = 31.2

first to answer will get brainiest

Answers



-8(r+14.6)=31.2 is the correct answer

-8 times (a number (sum=addition) and 14.6) is (equal to) 31.2

The equation for the math sentence "Negative eight times the sum of a number and 14.6 is 31.2." will be; -8(r+14.6)=31.2

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

We are given that math sentence as an equation:

"Negative eight times the sum of a number and 14.6 is 31.2."

Here,

-8 times (a number (sum=addition) and 14.6) = (equal to) 31.2

Therefore, the equation will be as;

-8(r+14.6)=31.2

The equation for the math sentence "Negative eight times the sum of a number and 14.6 is 31.2." will be; -8(r+14.6)=31.2

Learn more about equations here;

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how can you find the new amount of a quantity that has increased over a period of time

Answers

Answer:

Step-by-step explanation:/ Answer

1. First: work out the difference (increase) between the two numbers you are comparing.

2. Increase = New Number - Original Number.

3. Then: divide the increase by the original number and multiply the answer by 100.

4. % increase = Increase ÷ Original Number × 100.

What the person said above me

Due Tomorrow PLEASE HELP

Answers

Answer: He Can Fill 8 Containers

Step-by-step explanation: Divide 20 quarts by 2 -1/2. Then, because 2 1/2 = 2.5 you will use the decimal 2.5 in this equation. All you have to do know is follow the equation i did here. 20 / 2.5 = 8

Hoped This Helped!

He can fill 8 containers

if i add 5 to one-third of a number, and the result i one-half of a number. Then what is the number?

Answers

Answer: kinda hard um lets see most likely 5 because 5 x 3 is 15 then add five to five you get 10 which is half of twenty

Step-by-step explanation:

5 x 3 is 15 then add five to five you get 10 which is half of twenty

(3^7)^4
rewrite using a single exponent.

Answers

Answer:

[tex]( { {3}^{7} )}^{4} = {3}^{28} [/tex]

(3^7)^4 =3^28

Hope this helps xx

I need help on 5-10 if anyone could help that would be great

Answers

The answer is -5
The number being subtracted is smaller that what it is going to be subtracted by, so the answer is negative
THE ANSWER IS (-5)

Answer:

5 minus 10 equals -5

Step-by-step explanation:

Francine applies the commutative property to the product.

(- 8/9) x (-13) x (18)

Which expression illustrates the commutative property applied to the product?

Answers

Answer:

2nd one

Step-by-step explanation:

Commutative= switch sides without changing the whole answer. The second answer is the best because multiplication has the commutative property. By exchanging the position of the -13 and 18, the answer won’t change. However, all option won’t change the answer but the second option is the best choice

The value of the nth term in a sequence of numbers is given by the expression, 4n – 10. What is the 5th term in the sequence?

Answers

Correct Answer:
10

Explanation:
If the nth term in a sequence of numbers is given by the expression, 4n - 10, then the fifth term of the sequence is 4n - 10 = 4(5) - 10 = 20 - 10 = 10

I would appreciate it if you mark my answer as brainliest.

The value of the 5th term in the sequence as per the expression will be equal to 10.

What is the arithmetic sequence?

Two definitions are given for an arithmetic sequence. A "series where the variances in between every two succeeding terms are the same" is what it is. Each term in an algebraic expression is created by multiplying its previous term by a specified integer (either positive, negative, or zero).

As per the given information in the question,

The given expression is,

4n - 10

Then, the 5th term will be,

= 4(5) - 10

= 20 - 10

= 10

To know more about the arithmetic sequence:

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ALEKS homework. last 5 questions/screenshots. (this was due yesterday but thank god I have a 504!) Part 2
The first 5 questions/screenshots were on my previous question/post.

Answers

the Answer is 6% hope this helps:)

Answer:

Step-by-step explanation:

6%

Answer quickly I don't know what to do?

Answers

Answer:

B

Step-by-step explanation:

Basically you can put the amount of hours that you practice on every week in to a graph or a chart meaning you can store the data making it easier to read. Whereas with the other questions, you cannot.

B
I think and am pretty sure the answer is b

Which of the following points on the number line best represents 25%?
Answer quick

Answers

Point B is correct because it's dividing it into 4ths and 1/4=25 percent

Answer: It is point B

Step-by-step explanation: Because the number line is divided into fourths.

PLEASE HELP I NEED TO GET MY MATH GRADE UP OR ELSE I AM GOING TO BE GROUNDED FOR THE REST OF THE YEAR!!!!!

Answers

Answer:

$45

Step-by-step explanation:

x / 30 = 150 / 100

100x = 4500

x = 45

Answer:

$45

Step-by-step explanation:

To solve this, cross multiply:

[tex]\frac{x}{30} =\frac{150}{100}[/tex]

100x = 4500

Divide 100 from both sides.

x = 45

Hope this helps!

The shaded area on the grid represents the occupied chairs in a meeting room.

What percentage of the meeting room chairs are occupied?

Answers

Answer:

66%

Step-by-step explanation:

50 chairs in the room 33 chairs shaded  33÷50 = 0.66%

Should be 66%.
33 of the 50 chairs are shaded.

Suppose a hurricane traveled 130 miles from point in the Atlantic Ocean to Florida coastline in 6 1/2 hours. How many miles per hour did the hurricane travel?

Answers

Answer:

The hurricane traveled 260 miles per hour.

Step-by-step explanation:

Given,

Distance covered by hurricane = 130 miles

Then time = [tex]\frac{6}{12}[/tex] hours=[tex]0.5[/tex] hour

Distance=Speed*Time

Speed=[tex]\frac{Distance}{Time}[/tex]
Speed=[tex]\frac{130}{0.5}[/tex]

Speed=260 miles per hour

So, the hurricane traveled 260 miles per hour

speed = 170 mph
hope this helps!

Kayla works 5 days a week. Her job is 6 miles round trip. Will she need to refuel during the week? If so, how many times? Explain how you determined your answer. Use math to support your response.

Answers

Answer:

the average of Kayla is 39.8, $51.00

Kayla 39.8, $51.00.

Find the missing number so that the equation has infinitely many solutions.
x – 14 + (Blank)x =4x – 14

Answers

Answer:

3

Step-by-step explanation:

for this to have infinite amount of solutions both sides should equal each other and be the same

X-14+ blank x=4x-14

+14.                      +14

x+blank x=4x

-x.              -x

Blank x=3x

/x.          /x

Blank=3

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3
Step-by-step explanation:
for this to have infinite amount of solutions both sides should equal each other and be the same
X-14+ blank x=4x-14
+14.
+14
x+blank x=4x
-X.
-X
Blank x=3x
/x.
X
Blank=3
Hopes this helps please mark brainliest

Mr. Gonzales has only $18 to spend at a clothing store. He wants to buy a shirt that costs $5 including tax and some bracelets that cost $1.30 each, including tax. Write an equation and solve to determine b, the maximum number of bracelets Mr. Gonzales could buy. Pls I am desperate I will make it all of my 1,569 of my points to get the answer in 2 minutes

Answers

1.30b + 5 = 18
Subtract five from both sides for
1.30b = 13
Divide each side by 1.30
b = 13/1.30
b = 10
Mr. Gonzales can buy ten bracelets at maximum (if tax was included in the original prices you listed)

Answer:

10

Step-by-step explanation:

1. Equation:
18 = 5 + 1.30b

2. (Solve): Subtract 5
13 = 1.30x

3. Divide:
10 = b

Can someone please help me on transverse of parallel lines: solve for x? It is due soon! Thank you!

Answers

x=5, picture attached

ASAP HELP!!over the summer,for every 11 okra seeds dana planted,6 grew into plants,if he planted 143 okra seeds,how many grew into plants
A:138
B:63
C:78
D:262

Answers

Answer:

c) 78 plants

Step-by-step explanation:

The total required is,

→ x = 143/11

→ [ x = 13 ]

Then number grew into plants,

→ 6 × x

→ 6 × 13

→ 78 plants

Hence, the option (c) is correct.

Answer: 78

Step-by-step explanation: 143 /11=13x6=78

Can you pls help me??

Answers

Answer:

112 mushrooms

Step-by-step explanation:

2/5x5/9

10/40=1/4

1/4=28/x

cross multiply

1x=4(28)

x=112

hopes this helps please mark brainliest

112 mushrooms

Step-by-step explanation:

2/5x5/910/40=1/41/4=28/xcross multiply1x=4(28)x=112

Solve the linear equation x+x+2/4 = 189.5 State the property that justifies your first step and why you chose it.

Answers

The answer, I believe is 94.5

First simplify the equation as 2x+2/4=189.5
Then do the inverse operation of adding (subtraction) for 2/4 on both sides, leaving you with 2x=189 and finally divide 189 by 2, 189/2 =94.5 2x/2= (1)x.
I got 94.5 for the answer

Practice graphing the following inequality.


[tex]\frac{1}{2}[/tex] [tex]\geq[/tex] f

Answers

This is the answer for f is smaller than or equal to 1/2
F is smaller than 0.5 that means the dot will be in the middle of 0&1

What is the ratio of pennies to dimes written as a decimal?

Answers

Answer:

63¢

Step-by-step explanation:

0.03+0.6=0.63

I believe the answer is D but I could be wrong

The shaded model represents one whole.
Which model represents 4/3?

Answers

Answer:

B

Step-by-step explanation:

Just look at the image and apply the same concept

the answer is option b

help on 16 and 17 please

Answers

Answer:

16) 30 units squared

17) 28 units squared

Step-by-step explanation:

To find the area you need to multiply length times width.

Answer:

16.=30

17.=32

Step-by-step explanation:5*6=30 and 4*8=32

A regular polygon is shown with one of its angle measures labeled a. If m∠a = (2z + 64)°, find the value of z.

Answers

Answer:

the sum of all the angles of the polygon is 180°

Then,

(2z+64)° = 180°

2z = 180° - 64°

2z = 116°

z = 116 / 2

  = 58° (ans)

Answer:

58

Step-by-step explanation:

i got it right on my test

hope this helps!!!

Help me please, thanks

Answers

The answer to the questions is 100pts

Answer:

100pts

Step-by-step explanation:

A salesperson works 40 hours per week at a job where she has two options for being paid. Option A is an hourly wage of ​$26. Option B is a commission rate of ​10% on weekly sales. How much does she need to sell this week to earn the same amount with the two​ options?

Answers

Answer:

$10,400

Step-by-step explanation:

A salesperson works 40 hours per week at a job where she has two options for being paid. Option A is an hourly wage of ​$26. Option B is a commission rate of ​10% on weekly sales. How much does she need to sell this week to earn the same amount with the two​ options?

10% = 0.1

A: 26(40)

B: 0.1x

when Option A = Option B

26(40) = 0.1x

1,040 = 0.1x

divided by 0.1:

1,040/0.1 = 0.1x/0.1

x = $10,400

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