Evaluate 3x – 4 when x=7. The value of the expression is​

Answers

Answer 1

Answer:

17

Step-by-step explanation:

Answer 2

Answer:

Let's solve your equation step-by-step.

3x+2=14

Step 1: Subtract 2 from both sides.

3x+2−2=14−2

3x=12

Step 2: Divide both sides by 3.

3x /3 = 12/3

x=4


Related Questions

Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!

Answers

Answer:

2.5

Step-by-step explanation:

Answer:

6 : 15 right? or do i have to simplify

Step-by-step explanation:

All students in the 6th grade either purchased their
lunch or brought their lunch from home on Monday.
• 24% of the students purchased their lunch.
• 190 students brought their lunch from home.
How many students are in the 6th grade?

Answers

Answer:250

Step-by-step explanation:

in the picture below solve for X

Answers

Answer:

x = 7

Step-by-step explanation:

-4 + 12x = 11x + 3

      - 11x     - 11x

-4 + x = 3

+ 4        + 4

x = 7

Hunter and his children went into a grocery store where they sell peaches for $1.75 each and mangos for $0.50 each. Hunter has $20 to spend and must buy at least 14 peaches and mangos altogether. Also, he must buy at least 4 peaches and no less than 12 mangos. If xx represents the number of peaches purchased and yy represents the number of mangos purchased, write and solve a system of inequalities graphically and determine one possible solution.

Answers

Answer: answer:   n ≤ -3 or n < -5

step-by-step explanation:

-5 + 2n ≥ -11 +5+5

2n ≥ -6 2/2 ≤ -6/2

n ≤ -3 -6 - 10n > 44

+6 +6-10n > 50 -10/-10 50/-10

n < -5

x/3-10=8

x/3=18

x=48

A study of population of 1200 frogs revealed that 12 out of every 180 frogs in the population have spots on there back based on the results if this study how many frogs do not have spots on there back

Answers

Answer:

1176 doesn’t have spots on their back

Step-by-step explanation:

Divide

1200/180

=you’ll get about 6.66 or just round to 7

12*7=84

1200-84

1176

1176 doesn’t have spots

How long is x? How long is y?

Answers

i cant see anything

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

please help and show work
19) Geoff owns a computer store in 1990 he sold 2400 monitors and in 2000 he sold 4000. Let x
represent the number of years since 1990. Write a linear equation in slope intercept form that
represents this data.

Answers

Answer:

B. [tex] y = 160x + 2400 [/tex]

Step-by-step explanation:

The linear equation for that represents the above data is given in slope-intercept form as [tex] y = mx + b [/tex], where:

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

b = starting value = y-intercept = 2,400

Slope of the linear equation using (0, 2400) and (10, 4000):

[tex] m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{4000 - 2400}{10 - 0} = \frac{1600}{10} = 160 [/tex]

Substitute m = 160, and b = 2,400 in [tex] y = mx + b [/tex].

Thus, the linear equation in slope-intercept form would be:

✅[tex] y = 160x + 2400 [/tex]

PLEASE HELP! BRAINLIEST to correct answer!!!

Answers

Answer:

What do you need help with?

Explanation:

There is no question
Um I don’t mean to take points but I don’t see a question, but I hope that you do get help! Also have a good night ☺️

Ramon earns $1,610 each month and pays $53.40 on electricity. To the nearest tenth of a percent, what percent of Ramon's earnings are spent on electricity each month?

Answers

Answer:

yes 24

Step-by-step explanation:

Good Morning! Can I get some help here? ​

Answers

Answer:

n = 3

Step-by-step explanation:

[tex]3^{5}[/tex] x [tex]3^{n}[/tex] = [tex]3^{8}[/tex]

5 + n = 8

n = 3

[tex]3^{5}[/tex] x [tex]3^{3}[/tex] = [tex]3^{8}[/tex]

Need help pleaseeee

Answers

Cross multiply
10(x-3) = 9x
10x - 30 = 9x
-1x = -30
X = 30

Answer:

x = 30

Step-by-step explanation:

Find the probability of the following situation.
A cooler contains thirteen sports drinks:
six lemon-lime and seven orange. Two of
the lemon-lime and four of the orange
drinks are cold. The others are still warm.
You randomly grab a bottle. It is orange
flavored or warm.

Answers

Answer:

11/13

Step-by-step explanation:

"six lemon-lime and seven orange"

"Two of  the lemon-lime and four of the orange  drinks are cold"

2 lemon-lime are cold

4 lemon-lime are warm

4 orange are cold

3 orange are warm

Total orange flavored: 7

Not orange warm: 4

orange or warm: 11

p(orange or warm) = 11/13

The probability of grabbing a bottle that is orange flavored or warm is [tex]\frac{11}{13}[/tex]

What is probability?

'Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.'

According to the given problem,

Total number of drinks = 13

Number of lemon-lime drinks = 6

Number of orange drinks = 7

Number of drinks that are cold = 2 lemon-lime + 4 orange

                                                   = 6 drinks

Number of drinks still warm = 7

Probability = [tex]\frac{Number of possible events}{Total number of events}[/tex]

                  = [tex]\frac{7 + 4 }{13}[/tex] [ 7 + 4 because 7 are orange flavored and 4 lemon-lime              

                            drinks are warm.]

                   = [tex]\frac{11}{13}[/tex]

Hence, we can conclude, the probability of grabbing a bottle that is orange or warm is [tex]\frac{11}{13}[/tex].

Learn more about probability here:

https://brainly.com/question/11234923

#SPJ2

                             

Cual es la respuesta


Alguien que me ayude

Answers

Answer:

yes because it goes through the origin and has a constant rate is the correct answer hope it helps you :)

A diagram of a computer chip has a scale factor of 16:1. The chip is 24 centimeters wide on the diagram. How wide is the actual chip?

Answers

Answer:

2

Step-by-step explanation:

ok

j

Last year Anthony earned $24,000. After a brief lay-off this year, Anthony’s income is $18,500.


A.
30% increase


B.
30% decrease


C.
23% increase


D.
23% decrease

Answers

30% decrease because it’s all about subtract

Ethan works at an electronics store as a salesperson. Ethan earns a 5% commission on the total dollar amount of all phone sales he makes, and earns a 4% commission on all computer sales. Ethan had twice as much in computer sales as he had in phone sales and earned a total of $117 in commission. Write a system of equations that could be used to determine the dollar amount of phone sales Ethan made and the dollar amount of computer sales he made. Define the variables that you use to write the system.


Answers

Answer:

0.05x+0.04y=117

y=2x

where:

x is the amount of all phone sales

y is the amount of all computer sales

Step-by-step explanation:

From the information given, the first equation would indicate that the comission of all phone sales plus the comission from all computer sales would be equal to 117, which is:

0.05x+0.04y=117, where:

x is the amount of all phone sales

y is the amount of all computer sales

Also, the statement indicates that Ethan had twice as much in computer sales as he had in phone sales, which would be:

y=2x

Now, you can replace y=2x in the first equation and solve for x:

0.05x+0.04(2x)=117

0.05x+0.08x=117

0.13x=117

x=117/0.13

x=900

Finally, you can replace the value of x in y=2x to find the value of y:

y=2(900)

y=1800

Which of the following graphs shows the solution set for the inequality 15 – 5p ≥ 5 ?

Answers

Answer: You didn’t post the answer choices. But the solution is

p <_ 2

p is less than or equal to 2

Answer: the first graph

Step-by-step explanation:

edge 2021 ik i’m late sorry

help me ohmygod plz this is due tonight. thanks :)

Answers

Answer:

Page 1

a) plane ABC or plane ABF (really any combo of A, C, B, and F since they all lie on the plane)

b) B, C, F

c) A or B (they both lie on the same line)

d) AC or BC or AB (all variations of the same line)

Page 2

1)perpendicular

2) perpendicular

3) parallel

Page 3

a) ∠RQS and ∠SQR

b)∠TQR and ∠RQT

c) point Q

Hope this helps :))

Graph
Y=3/4x - 1/2
Pleaseeeee help!!

Answers

I’m not 100% sure kind of a guess but I would x=2/3. Good luck
Ok let me help hope this works 3/4 x 1/2= 2/3

look everyone, im sorry if i get questions incorrect i really love math, go on call me a nerd. yes i am one. im also the kid thats quiet in class and also has anxiety so if someone gets upset at me for doing something wrong just know im very srry and im trying to help the best i can with these. aome of these i try and havent even learned yet and i learn things from the answers and i know how to do it after. again im incredibly sorry for the incorrect answers especially in mathmatics IM IN ALGEBRA lol :D have a good day and good night also who perfers school than online distance learning i learn a whole lot more in school than online? anyone else?

Answers

Answer:

heyyy its alright we all make mistakes , the most important thing is that you tried, and learned so you can help others and yourself in the future :D all efforts are appreciated  

Step-by-step explanation:

i'm introverted so online school is epic for me

Answer:

Well I usually do bad in school

Step-by-step explanation:

25. Write an expression to represent the area of the shaded region in simplest form.
5x + 2
x + 7
3x - 1

Answers

Answer:

Step-by-step explanation:

To determine what the area of the shaded region is, simply find the area of the large rectangle and subtract the product from the smaller one.

Since they are polynomials. Multiply one binomial to the other and first obtain the product, before subtracting the product of the smaller rectangle.

(5x + 2)(3x - 1) - (x)(x + 7)

15x^2 - 5x + 6x - 2 - x^2 - 7

14x^2 + x - 9.

I believe this would be the solution in standard form.

Steph needs to help her parents put a fence around their pool. They want the fence to be square and want each side to measure 6 meters. They already have 10 meters of fencing. How many more meters of fencing should they buy? Choose 1 answer:

Answers

Answer:

14 meters

Step-by-step explanation:

Each side of the square fence = 6 meters

Perimeter of the square fence = 4 × length

= 4 × 6

= 24 meters

They already have 10 meters of fencing

How many more meters of fencing should they buy?

= Total meters - available meters

= 24 meters - 10 meters

= 14 meters

In a classroom of 20 students, 70% of them have brown eyes. If a teacher picks two students at random to pass out supplies, what is the probability he chooses two students without brown eyes?​

Answers

Answer:

6/20 can I get brainliest pleast

Step-by-step explanation:

[tex] \frac{70}{100} \times 20 = 14 \\ 20 - 14 = 6 \\ [/tex]

there is a chance that the teacher will pick a student without brown eyes 6/20 times

Kaylee put $240.00 in a bank account that gains 25%
interest annually.
How much interest will be accumulated in a year?
S???
If Kaylee makes no withdrawals, how much money will be
in the account after a year?
$???

Answers

Answer:

S=720

Step-by-step explanation:

25$ of 240 =60

60×12months=720

Given the two points(-2,1) and (-3,-3) on the graph, calculate the scope

Answers

Answer:

[tex]m=4[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Point (-2, 1)

Point (-3, -3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]:                    [tex]m=\frac{-3-1}{-3+2}[/tex]Subtract/Add:                      [tex]m=\frac{-4}{-1}[/tex]Divide:                                  [tex]m=4[/tex]

What are the gradients (slopes) and y-intercepts of these lines, please?​

Answers

Answer:

a. gradient 4

b. gradient 3

c. gradient 1

d. gradient 1

e. gradient -2

f. gradient 3

Step-by-step explanation:

to find y intercept substitute x to be 0

i.e y=3x

y=0

1. Over a 4-month period, among 30 people with bipolar disorder, patients who were given
a high dose (10g/day) of omega-3 fats from fish oil improved more than those given a
placebo. (Archives of General Psychiatry 56 (1999): 407)

Answers

Answer:

Over a 4-month period, among 30 people with bipolar disorder, patients who were given a high dose (10 g/day) of omega-3 fats from fish oil improved more than those given a placebo.

Step-by-step explanation:

Wanna chat add me as a friend OR COME TO Snap (ADAMBELAL839)

Please help !! Which statement best describes the data ?

Answers

Answer:

The correct statement is C.

Step-by-step explanation:

A boxplot, also known as a box and whisker plot is a method to demonstrate the distribution of a data-set based on the following 5 number summary,

1. Minimum (shown towards the left of the chart)

2. First Quartile (shown by the left-most line of the box)

3. Median (or the second quartile) (shown as a line in the center of the box)

4. Third Quartile (shown by the right-most line of the box)

5. Maximum (shown towards the right of the chart).

From the provided box plot it can be concluded that:

Minimum = 3First Quartile = 6Median = 9Third Quartile = 12Maximum = 15

The median is a quantity in statistics that points out where the mid-value of a data set is. Half of the data is less than the median and half is more than the median.

The median is 9, i.e. half of the data is less than 9 and half is more than 9.

The correct statement is C.

Select three ratios that are equivalent to 16:12

Answers

Answer:

4:3

8:6

32:24

Step-by-step explanation:

Well, you can change the values of both numbers and keeping the same ratio by dividing or multiplying both numbers (in this case 16 and 12) by the same number. So, first we can divide both numbers by 4 to get the ratio.... 4:3 and we could divide both numbers by 2 to get the ratio..... 8:6 and we can multiply both numbers by 2 to get the ratio....32:24

Hope this Helps!!! :)

Let me know in the comments if I should change anything or if the answer was perfect!

I NEED HELP ASAP IN THE PICTURE ABOVE

Answers

Answer:

Step-by-step explanation:

Even numbers are those that can be divided by 2.

3440 and 7802

Odd numbers are the rest

4893, 1451 and 6645

Smallest to largest

1451, 3440, 4893, 6645 and 7802

Sum of even numbers

3440+7802= 11242 divided by 2(there are only 2 numbers)

11242 ÷ 2 = 5621

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