Mathematics Middle School

Please solve with explanation on how you got the answer:
1. 3(2x - 1) = 21
2. 100 = 8(4t - 5)
3. 5/8 = 3/4b - 7/12
4. 1.045s + 0,068 = 15.743

Answers

Answer 1

Answer:

1. 2x-1=21/3

2x-1=7

2x=7+1

2x=8

X=8/2

X=4

2. 100/8=4t-5

12.5 =4t-5

12.5+5 =4t

16.5 =4t

16.5/4 =t

4.1=t

Related Questions

Helpp please for 20 pointsssss no wrong answerss

Answers

Answer:

y = 3x + 12

Step-by-step explanation:

Determine the slope by y2- y1/x2 - x1

which is 30-24/6-4

            = 6/2

            = 3

Now to find b we use y=mx + b and sub in the values we know so far

30 = 3(6) + b

30 = 18 + b

b = 12

Therefore:     y = 3x + 12

Answer:

Im not sure it this is right

Step-by-step explanation:

y = 2x + 6?

Give the slope of each of the following lines Name a point on each line y-3=1/2(x-3)

Answers

Answer: Slope = 1/2

One point = (0,1.5)

Step-by-step explanation:

1. Add 3 to both sides

2. Distribute the 1/2

3. Combine like terms

The slope is the number connected to the x by multiplication.

The constant / number after the plus sign (1.5) is the y-intercept. The y-intercept always has x=0 so you know that it is (0,1.5)

Slope=1/2 and one point = (0,1.5)

1. Describe in detail how you would create a number line with the following points: 4, 1.25, the opposite of 3, and − (−2 fraction of one-half ). Please be sure to describe on which tick marks each point is plotted and how many tick marks are between each integer. It may help for you to draw this number line by hand on a sheet of paper first.


2. Write a situation in which positive and negative numbers are used to describe values that have opposite meaning. What does 0 represent in this situation you created?

Answers

Answer:

Step-by-step explanation:

I DONT NO THE SAID Shade the models at the right to show how the  value of 0.04 is related to the value of 0.4.  Then write a division equation to  represent the relationship.

Can someone help, please

Answers

Answer: 5/1 or just 5

Step-by-step explanation:

The answer is 5

Hope that helps!

help pleaseeee no wrong answers

Answers

Answer:6

Explanation: 18 divided by 3 is 6

6 because i solved it

9. A rectangle has a perimeter of 62 inches. The length of the rectangle is 18 inches. What is the approximate width of the rectangle in centimeters? (1 inch is approximately 2.54 centimeters)

A. 33 cm
B. 610 cm
C. 65 cm
D. 152 cm

Answers

Answer:

when you write out the equation the answer comes out to letter D

Answer:

33

Step-by-step explanation:

The rectangle's perimeter = 62 inches.

The length = 18 inches.

The width: 62 ÷ 2-18 = 13 inches.

1inch ≈ 7.54 centimeters.

13 inches = 13x2.x4 = 33.12 centimeters.~33 cm.

Choose A

The perimeter of the rectangle = (The width + The length) xz }

what is the answer i need answers like right now pls

Answers

1,2,3,4,5,6,10,12,15,20,30,60
1,2,3,4,5,6,10,12, 15, 20 30, 60

The price of an airline ticket from New Orleans to Boston increased to $550. This is a 30% increase.

Question 1

To the nearest cent, what is the old fare?

A $423.08$423.08

B $412.14$412.14

C $397.67$397.67

D $501.40

Question 2
A plane ticket from Nashville to Louisville decreases from $120 to $102. What is the percent decrease?

A 15%15%

B 18%18%

C 10%10%

D 20%

Answers

Answer:

question 2 is A; 15%

Step-by-step explanation:

the change in price is $18; 18 is 15% of 120

The old fare of a Airlines ticket from New Orleans to Boston is  18333 cents. and the change in price is 15% of 120

Find out the old fare to the nearest cent?

Let the old price of the ticket = $100

Price is increased by 30%

We can write it as;

New price = $100+ $ 30

New price = $130

We know that 30%  = $550

then 100% = $550 × 100 / 30

So the old fare = $550,00 / 30

                        =$ 1833.3

1 dollars = 100 cents

$ 1833.3 = 18333 cents

Hence , the old fare of a Airlines ticket from New Orleans to Boston is  18333 cents.

Then the change in price is 15% of 120

To learn more about Increment;

brainly.com/question/24717902

#SPJ2

A video streaming service offers unlimited movies for $15 per month or $1.99 per movie. Graph the inequality that represents which unlimited offer is better. <--------------------->

Answers

Answer: 15<1.99x

You want to find when fifteen is less than 1.99 per movie. we can say that each movie is some value x. if we change the wording in the first sentence to math, we literally get 15<1.99x.

Rearrange the equation so that x is the independent variable.
-5x-4y=-8

Answers

question means make it look like

y = ...

Answer:

y=5/4x+2 or y=(5x-8)/-4

Step-by-step explanation:

question means make it look like

y = ...

-5x-4y=-8

-4y=+5x-8

y=(+5x-8)/-4

y=5/4x+2

https://brainly.com/question/11770379

…………………………………………………zzzzzzzzz

Can someone help, please

Answers

Answer:

1/2

Step-by-step explanation:

The answer would be -1/2

Find the slope of the line.


The slope of the line is ?

Answers

Answer:

-8/4

Step-by-step explanation:

but if you simplify It , it will be -2.

Answer:Slope m = -2

Step-by-step explanation:

Slope Solution

m=riserun=ΔyΔx

m=y2−y1x2−x1

m=−4−43−−1

m=−84

m = -2

Pls help!! is for today! :(

Answers

Answer:

i am not sure i have not worked on that sorry

Step-by-step explanation:

can u take a picture of the whole paper

what is the answer i need answers now

Answers

The answer is 10/3. Because you have 3 wholes and 1/3 so, 3x3 is 9 and you still have the extra 1 so 9+1=10 therefore your answer would be 10/3
10/3 is the answer!!

Allison practices her violin for at least 12 hours per week. she practices for three fourths of an hour each session. If Allison has already practiced 3 hours this week. How many more sessions remain for her to meet or exceed her weekly practice goal? Pls help! 100 pts for an 100 on this question

Answers

Answer:

Allison needs at least 12 more sessions to reach the goal

Step-by-step explanation:

The first thing we must do for this case is to define a variable

We have then:

x: number of sessions.

We write now the inequality that represents the problem.

We have then:

(3/4) x + 3 > 12

From here, we clear the value of x:

(3/4) x > 12 - 3 (3/4)x > 9x >(4/3) * 9x > 12

Answer:

12 more sessions

Step-by-step explanation:

a session is 3/4 of an hour, which is 45 mins. Allison needs to practice 12 hours a week, 720 minutes. If we divide 720 by 45, we get 16, which is the number of session Allison needs to do in order to reach her goal.
Since she already practiced 3 hours, we can find out how many sessions she already completed by dividing 180 by 45. The answer is 4. Now all we need to do is subtract 4 from 16 to find out how many sessions she has left. 16-4 is 12, so we have our answer.

Hope this helped!

help me pleaseeeeeeeeee

Answers

Answer:greater than

Step-by-step explanation:

50/1 is greater than 45/ 3/4

The
Answer is

Greater than

You ask 189 of your classmates how they feel about the school year being made longer. Complete the​ two-way frequency table to show the results of the survey. Use pencil and paper. Combine the very unhappy and unhappy categories into one category called dislike and combine the happy and very happy categories into one category called like. Complete a new​ two-way frequency table.

Answers

Yes! I love the weather today

this is what my pfp means pt1 go to my acc to find pt2

1:in school
2:home for school
3:being yur mom
4:sleeping
5:watching tv

Answers

Ima bouta go to school too lollll
Unfortunately I’m going to wake up AT 5 O’CLOCK FOR SCHOOL. So this really sucks but that’s what school does =*=

Please I would love your help

Answers

answer

is 3/2 or 1 1/2

to find the slope use change in y over change in x . take two points i took 1,0 and 3,3 sand use it find the slope. 3-0 divided by 3-1 = 3 divided by 2. which equals 3/2 or 1 1/2 or 1.5

10x+1 ur slope is 1 ….

I don't know the answer! 43 points for the person who helps!!

Answers

Answer:

0.0216

Step-by-step explanation:

54/25 x 1/100

27/25 x 1/50

27/1250 or 0.0216

Answer:

[tex]2.16 \times {10}^{ - 2} \\ \\ = \frac{2.16}{ {10}^{ 2} } \\ \\ = \frac{216}{100 \times 100} \\ \\ = \frac{216}{10000} \\ \\ = 0.0216[/tex]

Step-by-step explanation:

Hope it helps You :)

You have 4 pounds of clay. You are going to use 2/5 of how it to make a bowl. How many pounds of clay are you going to use to make the bowl?

A. 3 1/2

B. 4 pounds

C. 2 1/2

D. 1 3/5

Answers

Answer:     D. 1 3/5

Step-by-step explanation

2/5=0.4

4x0.4=1.6

1.6=1 3/5

2/5 is equal to 40% (5x20= 100 and 2x20= 40) and 40% of 4 (4x0.4) is 1.6 which could also be 1 3/5 because 5x2 is 10 and 3x2 is 6 so the answer would be D

What is the answer? I need answers now?

Answers

Answer: 1/15

Step-by-step explanation:

75 divided by 5 is 15.

Answer:

1/15

Step-by-step explanation:

if you multipy 15 times 5 you get 75 hope this helps

Can someone help, please

Answers

Answer:

[tex]- \frac{3}{8}[/tex]

Step-by-step explanation:

Use the slope formula:

slope [tex](m) = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Let:

[tex](x_1 , y_1) = (1 , 11)\\(x_2 , y_2) = (9 , 8)[/tex]

Plug in the corresponding numbers to the corresponding variables:

[tex](m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{8 - 11}{9 - 1}[/tex]

Simplify by subtracting:

[tex](m) = \frac{8 - 11}{9 - 1} = - \frac{3}{8}[/tex]

[tex]-\frac{3}{8}[/tex] is your answer.

~

Learn more on solving for slope, here:

https://brainly.com/question/26650191

-3/8

It’s just negative 3 over 8

please i would love you help

Answers

The answer is 2 hope this helps

The following diagram models a ratio relationship.


A. Write a part-to-part ratio that compares the number of squares to triangles.


B. Use ratio language to describe this ratio relationship.
I HAVE 3 MINUTES

Answers

Answer:

102.8

Step-by-step explanation:

102.8

Answer: where is the diagram

Step-by-step explanation:

Can someone help, please

Answers

Answer:2

Step-by-step explanation: 20/10=2/1=2

The slope is 2 because it goes up 2 over 1 that’s 2/1 which simplifies as 2

Floyd wants to create a random sample by drawing tiles from a bag. Complete the table to give an example of the quantity and color of tiles he could use to represent the albums.

Answers

Answer:

This seems like something that you'd have to do in person

Step-by-step explanation:

you pick random colors and assign a type of music to each one. then you assign whatever you can use as tiles to each color?

Miguel performed plasma tests using 5 tubes. Each tube contained 12.73 milliliters (mL) of plasma.How much plasma did Miguel test in total seperate while multiplying
12.73
x 5
---------

Answers

That answer is 63.65.
The answer is 63.55 did you get it

An eye shadow palette costs $14.75 before tax. What is the total after a 7% sales tax is added?

Answers

Answer:

$15.7825

Step-by-step explanation:

$14.75 + $1.0325 = $15.7825

Answer:

$ 15.78

Step-by-step explanation:

Price before tax: $ 14.75

+ Sales tax (7%): $ 1.03

Total price including tax: $ 15.78

5 + x(-8)
x = 7
Help pls

Answers

7x-8=-56+5=-51. answer is -51

Answer:

-51

Step-by-step explanation:

Given information,

→ 5 + x(-8)

→ x = 7

Let's solve the expression,

→ 5 + x(-8)

→ 5 + 7(-8)

→ 5 + (-56)

→ 5 - 56

→ -51

Hence, the answer is -51.

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