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
Andreyy89
3 years ago
14

Evaluate the expression when x = - 1/5 and y = 3/4 1: 4x + y 2: -| x | + y

Mathematics
1 answer:
koban [17]3 years ago
8 0

Answer:

(3/4)+(4x+y)=0

(l x l + y) b

You might be interested in
Write the equation of the line that passes through the point (-3, 6) and is parallel to the line
Ugo [173]

Answer:

\because \:l_{1}  \parallel \: l_{2} \\  \therefore m_{1} = m_{2} =  \frac{1}{2}  \\  \frac{y - 6}{x + 3} =  \frac{1}{2} \\ y - 6 =  \frac{1}{2}x + \frac{3}{2} \\ y = \frac{1}{2}x + \frac{3}{2} + 6\\ y = \frac{1}{2}x + \frac{15}{2}

5 0
3 years ago
Read 2 more answers
Find the sum: 400 + 394 + 388 + .... - 32
romanna [79]

Answer:

1150 because 400 + 394 + 388 = 1182 - 32 = 1150.

6 0
2 years ago
Read 2 more answers
9m-m+3=-2(m+1) <br> this thing wants 20 characters so..HI!
MrMuchimi

Answer:

m = -1/2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

9m - m + 3 = -2(m + 1)

<u>Step 2: Solve for </u><em><u>m</u></em>

  1. Combine like terms:                    8m + 3 = -2(m + 1)
  2. Distribute -2:                                8m + 3 = -2m - 2
  3. Add 2m on both sides:                10m + 3 = -2
  4. Isolate <em>m</em> term:                             10m = -5
  5. Isolate <em>m</em>:                                      m = -1/2
6 0
2 years ago
Element X is a radioactive isotope such that its mass decreases by 26% every day. If an experiment starts out with 810 grams of
ioda

Answer:

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

The function to represent the mass of the sample after t days is A(t) = 810(0.74)^t

Step-by-step explanation:

Exponential equation of decay:

The exponential equation for the amount of a substance is given by:

A(t) = A(0)(1-r)^t

In which A(0) is the initial amount and r is the decay rate, as a decimal.

Hourly rate of change:

Decreases 26% by day. A day has 24 hours. This means that A(24) = (1-0.26)A(0) = 0.74A(0); We use this to find r.

A(t) = A(0)(1-r)^t

0.74A(0) = A(0)(1-r)^{24}

(1-r)^{24} = 0.74

\sqrt[24]{(1-r)^{24}} = \sqrt[24]{0.74}

1 - r = (0.74)^{\frac{1}{24}}

1 - r = 0.9875

r = 1 - 0.9875 = 0.0125

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

Starts out with 810 grams of Element X

This means that A(0) = 810

Element X is a radioactive isotope such that its mass decreases by 26% every day.

This means that we use, for this equation, r = 0.26.

The equation is:

A(t) = A(0)(1-r)^t

A(t) = 810(1 - 0.26)^t

A(t) = 810(0.74)^t

The function to represent the mass of the sample after t days is A(t) = 810(0.74)^t

5 0
3 years ago
Yolanda is riding her bike. The number of revolutions (turns) her wheels make varies directly with the distance she travels. See
nadezda [96]
4 feet per revolution
Slope m=1/4
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which numbers are solutions of the inequality x&gt;-12? Check all that apply.
    6·2 answers
  • (DUE MAY 1ST)Luis rides his bicycle 34 mile in 15 minutes along the bike trail.
    12·1 answer
  • Parallelogram RECT is a rectangle. If EC = x + y , RT = 2x - y, RE = 2x + y, and TC = 3x - 3 , what are the values of the variab
    6·1 answer
  • Harish has ruppees 80. he wants to buy toffees,8/5 ruppees. how many toffees can he buy?
    11·1 answer
  • a box is filled with black (B), white (W), red (R), green (G), and pink (P) phone cases. A phone is selected at random
    6·2 answers
  • Does any one know 7,8???
    14·2 answers
  • What is the value of the expression when a = 6, b = 4, and c = 8?<br><br> 2a3b−c
    6·2 answers
  • What is f(4) = 4x^2 - x
    13·2 answers
  • Help needed and ASAP!!!!!!!!!!!!!!!!!!!
    11·2 answers
  • A rental car company charges $54.35 per day to rent a car and $0.09 for every mile
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!