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
Anna35 [415]
4 years ago
11

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Mathematics
1 answer:
Katarina [22]4 years ago
8 0

Answer:

v > -25/p

r = -5 +7/3 w

Step-by-step explanation:

- pv + 40 < 65

Subtract 40 from each side

- pv + 40-40 < 65-40

-pv < 25

Divide each side by -p  (remember to flip the inequality since we are dividing by a negative)

-pv/-p > 25/-p

v > -25/p


7w - 3r = 15

Subtract 7w from each side

7w-7w - 3r = 15-7w

-3r = 15-7w

Divide by -3

-3r/-3 = (15-7w)/-3

r = -5 +7/3 w

You might be interested in
When the height of a rectangular prism was halved, the volume was 168 cubic cm. if the original prism had a length, width, and h
kondaur [170]

a) The equation is therefore; x³ + 3x² + 2x = 336

b) Solving for the length, we get the length to be; x = 6.

c) All workings are as shown below;

According to the question;

  • When the height of a rectangular prism was halved, the volume was 168 cubic cm.

In essence, the volume of the original prism is;

  • Volume = 168 × 2.

  • Volume = 336cm³

Since, the original prism had a length, width, and height of consecutive integers, increasing in that order.

  • Therefore, length = x

  • width = (x +1)

  • height = (x +2)

  • Volume = x (x+1) (x+2) = 336

a) The equation is therefore;

  • <em>x³ + 3x² + 2x = 336</em>

b) Solving for the length, x is as follows;

  • (x-6) (x² + 9x + 56) = 0

By testing values and checking;

  • Upon solving the polynomial, x = 6.

c) All workings are as shown above.

Read more on cubic equation:

brainly.com/question/8878887

6 0
2 years ago
Simplify the expression (8x^3y^2/4a^2b^4)^-2
icang [17]
Simplify the following:
((8 x^3 y^2 a^2 b^4)/4)^(-2)
8/4 = (4×2)/4 = 2:
(2 x^3 y^2 a^2 b^4)^(-2)
Multiply each exponent in 2 x^3 y^2 a^2 b^4 by -2:
(x^(-2×3) y^(-2×2) a^(-2×2) b^(-2×4))/(2^2)
-2×3 = -6:
(x^(-6) y^(-2×2) a^(-2×2) b^(-2×4))/2^2
-2×2 = -4:
(y^(-4) a^(-2×2) b^(-2×4))/(2^2 x^6)
-2×2 = -4:
(a^(-4) b^(-2×4))/(2^2 x^6 y^4)
-2×4 = -8:
b^(-8)/(2^2 x^6 y^4 a^4)
2^2 = 4:
Answer: 1/(4 x^6 y^4 a^4 b^8) thus the answer is A
3 0
3 years ago
A CD usually sells for $14.00. If the CD is 20% off, and sales tax is 7%, what is the total price of the CD, including tax?
tankabanditka [31]

Answer:

the total price of the CD including tax is $11.984

Step-by-step explanation:

The computation of the total price of the CD including tax is shown below:

The Selling price of the CD is $14

CD is 20% off

And, the sales tax rate is 7%

So, the total price of the CD is

= ($14 - $14 × 20%) × (1.07)

= $11.2 × 1.07

= $11.984

Hence, the total price of the CD including tax is $11.984

8 0
3 years ago
The owner of a restaurant serving Continental-style entrees was interested in studying ordering patterns of patrons for the Frid
Virty [35]
C I think.
I hope this helps :)
6 0
3 years ago
Can someone help me please
ki77a [65]
<span>x = -2.375 Hopefully that helps :)</span>
8 0
3 years ago
Other questions:
  • This year, Slytherin got 5% less House points than the winner Gryffindor. What is the minimum number of House points Slytherin n
    5·1 answer
  • in the fridge hannah had 2/3 of a quart of milk. she used half of this milk when she had breakfast cereal. how much milk did she
    14·2 answers
  • Pls help i give brainliest and 5 stars​
    14·2 answers
  • ILL GIVE BRAINLIEST PLEASE HELP MEEE
    9·2 answers
  • Find the zeros of the quadratic function f(x) = 1/2(x- 7)^2 – 8​
    10·1 answer
  • A copy machine makes 231 copies in 5 minutes and 15 seconds. How many copies does it make per minute?
    14·1 answer
  • DUE TODAY! HELPPP
    6·2 answers
  • Bernard typically runs x km/hour. While he was sick, he only ran 41. 5 km/hour. What equation represents that the difference in
    15·2 answers
  • Raju has 2020 one-centimetre square tiles. He
    8·1 answer
  • Write each decimal as a fraction in simplest terms
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!