1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IgorLugansk [536]
2 years ago
12

Form the algebraic expressions for the following with explanation.

Mathematics
1 answer:
nevsk [136]2 years ago
8 0

answer:

<h2><u><em>7w− 2/v</em></u></h2><h2>Step-by-step explanation:</h2>

You might be interested in
Nicole has 16 nickels and dimes. If the value of her coins is 1.05, how many of each coin does she have?
earnstyle [38]

Answer:

  • 11 nickels
  • 5 dimes

Step-by-step explanation:

If all were dimes, she would have $1.60, which is $0.55 more than she actually has. Replacing a dime with a nickel reduces the total by .05, so there must be .55/.05 = 11 such replacements. This is the number of nickels. The number of dimes makes up the rest of the 16 coins.

Nicole has 11 nickels and 5 dimes.

_____

You can write equations for this several ways. My personal favorite is to use a single variable to represent the number of highest-value coin: d = number of dimes. Then the number of nickels is 16-d and the total value is ...

  0.10d + 0.05(16 -d) = 1.05

  0.05d + 0.80 = 1.05 . . . eliminate parentheses, collect terms

  0.05d = 0.25 . . . . . . . . . subtract 0.80

  d = 0.25/0.05 = 5 . . . . . number of dimes

  16-d = 16-5 = 11 . . . . . . . .number of nickels

__

If you let the variable match the number of nickels, the solution looks a lot like the one described in words, above.

  0.05n + 0.10(16 -n) = 1.05

  -0.05n +1.60 = 1.05

  -0.05n = -0.55 . . . . . . . subtract 1.60

  n = -0.55/-0.05 = 11 . . . number of nickels

  16-n = 16-11 = 5 . . . . . . . number of dimes

__

Comparing these two solutions, you see that we work with negative numbers in the second solution. The reason for choosing the variable to represent the higher-value coin is to keep the numbers positive, as they are in the first solution. (It's no big deal, if you're not bothered by negative number arithmetic.)

3 0
3 years ago
What is the rate of change for 8+ y = 2x
dalvyx [7]
The rate of change is also known as the slope. To easily find the slope of a line, put the equation into slope intercept form by isolating y on one side.

8 + y = 2x
y = 2x - 8

By definition, the rate of change is 2.
3 0
3 years ago
Can someone please help me with #1 through #14 of the geometry angle pairs #6 assignment?​
leonid [27]

1) adjacent

2) linear pair

3) complementary

4) vertical

5) linear pair

6) linear pair

7) complementary

8) vertical

9) adjacent

10) adjacent

11) vertical

12) adjacent

13) adjacent

14) vertical

3 0
1 year ago
6) 2(n + 5) = -2<br> help i wasn’t paying attention in my google meet
bonufazy [111]

Answer: the answer is -6

2(n+5) = -2

2n + 10 = -2

2n = -2 - 10

2n = -12

2n *1/2 = -12 * 1/2 = -6

n = -6

5 0
3 years ago
Read 2 more answers
Solve this<br> Will mark as brainliest
Elina [12.6K]

Step-by-step explanation:

11+11+9 equals 30 just do the math it simple

6 0
2 years ago
Other questions:
  • Apples are on sale for 1.20 a pound. Logan bought 3/4 of a pound. How much money did he spend in all
    13·2 answers
  • use the formula d=rt to find the distance traveled by a car driving at an average speed of 50 miles per hour for four and a half
    11·2 answers
  • 672,591 is closer to
    14·1 answer
  • Richard goes to the electronics store. He buys 2 memory cards that cost $8.99 each and 3 packages of batteries that are on sale
    14·2 answers
  • Need help please. I suck at math and these two are hard
    13·1 answer
  • HELP! Screen-printing a batch of shirts requires 4 minutes per shirt in addition to 6 minutes of initial set-up time. If it take
    13·2 answers
  • Let ∠A, ∠B, and ∠C be acute angles. Use a calculator to approximate the measures of ∠A, ∠B, and ∠C to the nearest tenth of a deg
    6·1 answer
  • If R, S, and T are collinear and RS + ST = RT, which of the following is true?
    5·2 answers
  • Directions: In your own words talk about the similarities and differences in angles?
    12·1 answer
  • The following structure is composed of three right rectangular prisms: two that each measure 12 inches by 10 inches by 5 inches
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!