Mathematics Middle School

Evaluate the expression when z=7
4z-10
-18
-8
-38
-28
Pls answer fast thank u so much!

Answers

Answer 1

Answer:

18

Step-by-step explanation:

z = 7

4z - 10

= (4×7) - 10

= 28 - 10

= 18

Answer 2

Answer:

18

hope you like it

Related Questions

Can someone help, please

Answers

Answer:

slope = 9/5

Step-by-step explanation:

[tex]m=\frac{10-1}{7-2} =\frac{9}{5}[/tex]

Hope this helps

The table shows the balances of two bank accounts for 3 months. In what month will the balance of Account A be equal to the balance of Account B? I have a pic below

Answers

I do not know the answer
to answer this we can start by making 2 expressions with variables for account a and b
x can represent the number of months and y can represent the account balance
account a: y=35x + 150
this is because the balance starts at $150 and increases by $35 every month
account b: y=15x+450
this is because the balance starts at $450 and increases by $15 every month

now we use substitution (making equations equal to each other) to solve for x, the number of months it will take for the balances to be equal

35x+150=15x+450
-150 -150
35x=15x+300
-15x -15x
20x=300
/20 /20
x=15

On month 15, the balances of both accounts will be equal.

suppose the farmer buys 1/2 square mile of land and divides all his land into square fields 1/4 mile long and 1/4 mile wide how many fields will he have? What is the total area of his land in square miles?

Answers

Answer:

Step-by-step explanation:

So the farmer will have 8 fields each field, a square field with length of 1 side 1 over 4 of a mile. Did you know?

Can Someone Help Me Please?

Answers

Yes I’m free to help Anyday if the week if you need someone

Answer:    3x or 1 4/2x

Step-by-step explanation:

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

A merchant marks-up the merchandise 20% . What will be the percent expression used to determine the price of each item to be sold

Answers

Answer:

The percent expression used to determine the price of each item to be sold is 1.2 x original price.

Step-by-step explanation:

1.2 X is the original price
Hope this helped!!!

I need help on these 2 questions ASAP

Answers

Answer:

10) c = 87.92

15) c = 272806.34

Step-by-step explanation:

10) radius = 14 in                 15) diameter = 86881 mi

c = ℼ × 2 × r                          c = ℼ × d

c = 3.14 × 2 × 14                   c = 3.14 × 86881

c = 87.92                              c = 272806.34

(7.8)¹(5)³
help me please

Answers

(7.8)¹(5)³
=7.8.125
=7000

Answer: 975

Step-by-step explanation:

PEMPAS (solve in this order):
1st solve what's in the parenthesis

2nd solve exponents

3rd solve Multiplication or Division from left to right

4th Add or Subtract from left to right

So:

(7.8)^1 * (5)^3 = 7.8 * 125

(because exponents means how many times a number multiplies by itself, in this case 5^3 is equal to 5*5*5 = 25*5 = 125)

7.8 * 125 =

975

If you found it helpful, please rate

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!

Answers

Answer: x=-6

Step-by-step explanation: 6x=-36 divided both sides by 6. -36/6=-6

Option C is correct

Explanation: The negative is larger than the positive

Brainly pls

Evaluate the expression when b=9 4b+10-b
Group of answer choices
47
37
27
17
Pls answer fast thank u!

Answers

Answer: 37

Step-by-step explanation:

4 x 9 = 36

36 + 10 = 46

46 - 9 = 37

Answer: 37

Step-by-step explanation: First insert 9 in the equation

4(9)+10-9

Then do Order of Operations

4x9=36

36+10=47

47-9=37

Hope this helps :)

Help. I'll mark as brainlist.

Answers

Answer: okay, I think the answer would be <NQP and <PQN if the answer is asking for a different way to identify it other than <Q

Angle NQP and angle PQN

Hari gives Sai some money. If 1/9 of the money was spent on food and 2/5 of the money was spent on clothes, how much money did Hari give to Sai?

Answers

Answer:
220.

Explanation:
1/9 -> 450=50
2/5 -> 450=180
180+50=230
450-230=220.

Shawn bought x movie tickets for $8.00 each and y bags of popcorn for $4.50 each. Write an algebraic expression for the total amount Shawn spent.

Answers

Step-by-step explanation:

when you have a problem you can tell me have nice day

$8.00x+$4.50y The x stands for the amount of tickets bought times the price of the ticket. The y stands for the amount of bags of popcorn bought times the price per bag.

Sam is tiling a floor. He will use the same repeating pattern for the entire floor. The rule is "Blue Tile, White Tile, Black Tile." If he uses 85 tiles, how many will be black? Enter your answer in the box. Sam is tiling a floor. He will use the same repeating pattern for the entire floor. The rule is "Blue Tile, White Tile, Black Tile." If he uses 85 tiles, how many will be black? Enter your answer in the box.

Answers

Answer:

28 Black tiles

Answer:28 tiles

Step-by-step explanation: there are 3 colors and he is using the color one by one by one color at a time so you divide by 85 by 3 and then you get 28

whos better dallas cowboys or clevland browns

Answers

Answer:  Dallas

Step-by-step explanation:

2+2=4 and Your mom

Answer:

$dollas$

Step-by-step explanation:

In a recent year, 44% of all college students were enrolled part-time. If 5.7 million college students were enrolled part-time that year, what was the total number of college students?

Answers

Answer:

when ypu have a problem you can tall me have a nice day at school when you like follow me

44% of 5.7 millions would be 2508000

Write each equation in slope intercept form.
y+5=-6(x+7)
and y+2 =1/6(x-4)

Answers

answer

1- y = -6x +2
2- y = 1/6x -6
Answer:

y=−6x−47

y=1/6x-8/3

Can someone help, please

Answers

Answer: 2 1/2 as a fraction

Hope this helps!

Answer:

9

Step-by-step explanation:

PLEASE HELP AND GRAPH I WILL GIVE BRAINLIEST!!!!! IMAGES ADDED

Answers

Qu2) Yes, the graph shows that x and v have a proportional relationship. This can be seen because the points lie on a straight line, which indicates that the ratio of x to v is constant. When the value of x increases by 2, the value of v also increases by 4, which means that x and v are directly proportional
ONLY DOING THIS SO THE GUY ONTOP CAN GET BRAINLIEST!!

A store is going out of business. The owner intends to mark-down the merchandise 35% for the first two weeks. What will be the percent expression used to determine the price of each item?

Answers

Answer:  13.65

Step-by-step explanation:

please help me on this question

Answers

The answer is Bottom plot
the bottom plot is the right answer i believe

A man has 2,645 coins this year, next year, he got 6,575 coins, how many does he have in all
A. 8,595
B. 9,220
C. 7,805
D. 5,785

Answers

The answer is B.9220

2645+6575

Can someone help, please

Answers

Answer:

y = 3x - 6

Step-by-step explanation:

We have to write it in slope-intercept form, y = mx + b

m = slope, which is 3

y = 3x + b

b = y-intercept, which is (-6)

y = 3x + (-6), BUT that's not the proper way to write it.

The proper way to write it would be y = 3x - 6

y= 3x - 6


3x is the slope and -6 is the y-intercept

Help. I'll mark as brainlist.

Answers

Answer:

Step-by-step explanation:

Angle ACD and Angle DCA you will realize that they represent the same angle.

Angle ACD and Angle DCA
The angle is the same,but just has two different names

Sandra earns $164 for working 16 hours and $512.50 for working 50 hours. The relationship between her income and the number of hours is proportional linear relationship. Determine the rate of Sandra's earnings.

Answers

she earns $10.25 an hour

Answer: 41/4

Step-by-step explanation:

1. Calculate 164/16

2. Simplify 41/4

3. Alternative Forms 10.25 or 10 1/4

need help again please

Answers

that would be 26 square feet

Answer:

Part A:

8 x 7 = 56; 56 x 10 = 560

Part B:

504

Part A & B explanation:

If you notice, there are no decimals in the answers so it's clear they round them. 8.4 rounded is 8 & 6.9 rounded is 7. To find the area of a singular rectangle is length x width. 8 x 7 = 56. In part A the directions say "best estimate" signaling that it isn't the exact answer you're looking for. 8 x 7 = 56; 56 x 9 = 504 would be the exact answer. (Answer for part b).Therefore, the answer for part A is 8 x 7 = 56; 56 x 10 = 560. Because 560 is the closest to 504 on the board.

Hope this helped <3

Tyshawn bought a pair of shorts online for $75. He used a coupon code to get a 20% discount. The website also applied a 15% processing fee to the price after the discount. How much was the discount, in dollars and cents?

Answers

The discount was $15.
The discount was exactly 15$

can someone help me????

Subject: Spanish

Answers

Answer:

Tú conversas mucho.

--

Have a nice day!!

Answer:

Tú conversas mucho.

                                                                     

What are the coordinates of point D(4/7, 3 1/3) after it reflected across the x-axis

Answers

Answer:it’s 4 units to the left

Step-by-step explanation: The point (4,3) reflected the x-axis,

=> The x remains the same, the y flips over the x-axis to be negative

     (4,3) ==>> (4,-3)

The point (-3,-8) is reflected in the y-axis.

=> The y remains the same, the x flips over the y axis to be negative

     (-3,-8)==>>(3,-8)

The point (2,4) is reflected in the line x = -3.

=> The x remains the same, the y flips over the x= -3 line.

     Instead of reflecting over the x-axis (or the x = 0) line

     and just being +4 or 4 above the x-axis to -4 or 4 below the x-axis-axis-axis

     you have +4 being 7 above the x= -3 line so you need

     7 below the x= -3 line or -10  SO

      (2,4)==>>(2,-10)

The point (a, b) is reflected in the line y = x

     Consider that the line x=y is a 45-degree diagonal.

     Imagine a point on the 45-degree at +3  i.e. (3,0)

     Imagine a line perpendicular to x=y from the point (3,0)

           (sorry there is no way to draw on here - try drawing it)

    The line would hit the x-axis-axis at (0,3)

    So you can see the x becomes y and y become x.

     (a,b)==>>(b,a)

For

ΔXYZ is defined by its vertices X(1,3), Y(-3,5), and Z(0, -5).

       ΔXYZ is reflected in the y-axis.

So for each of the 3 points X, Y, and Z reflect about

       the y-axis the same way in the second example above

       and you will have the 3 new points X’,  Y', and Z’

The translation T: (x, y) → (x -2, y + 4) maps the point (2, -3) to

The translation T: (x, y) → (x + 3, y - 2) maps the point (-4, -3) to

     What you need to do here is just plug the values for X and Y into the translation.

     e.g. for T: (x, y) → (x -2, y + 4)  plug (2,-3) of x=2 y=-3 into (x -2, y + 4) and get the new values.

What the person said above me

Can someone help, please

Answers

y = 1/4x +4
You plug in the slope and y intercept to the formula y = mx + b
y = 1/4x + 4
I believe that’s the answer.

1.John’s age is 12 more than 2 times Sam’s age. The sum of their ages is 65. How old are John and Sam?

2.The difference between two numbers is 28. Find the two numbers if the larger number is 3 times the smaller number.

3.Mary and Jim collect baseball cards. Mary has five more than three times as many cards as Jim. The total number of cards they both have is 147. How many cards do they each have?

Give brainliest

Answers

Answer:

2. 14 and 42

i hope it's right :)

Step-by-step explanation:

Let the number be x

So, the larger number = 3x

So the # is 14

Other #

42

The ages of John and Sam are 47.34 and 17.66 years respectively.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, John’s age is 12 more than 2 times Sam’s age. The sum of their ages is 65.

Let, The age of Sam be 'x'.

Therefore, 2x + 12 + x = 65.

3x = 53.

x = 17.66.

So, Sam is 17.66 years old and john is (65 - 17.66) = 47.34 years old.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ2

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