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
Alexus [3.1K]
3 years ago
15

Solve this system of equations:

Mathematics
1 answer:
Natali [406]3 years ago
3 0

Answer:

Step-by-step explanation:

4(2y -8) + y = 13

8y - 32 + y = 13

9y - 32 = 13

9y = 45

y = 5

x = 2(5) - 8

x = 10 - 8

x = 2

(2, 5)

You might be interested in
A water tank is shaped like the cone shown here. How much water can the tank​ hold? Use 3.14 for . If water is drained from the
Anna35 [415]

Question:A water tank is shaped like the cone shown here. How much water can the tank​ hold? Use 3.14 for . If water is drained from the tank to fill smaller tanks that each hold 200 m³ of​ water, how many smaller tanks can it fill

Answer:

Amount of water = 871.87 in³

Number of tanks = 4 tanks

Step-by-step explanation:

Applying,

V = 1/3πr²h........... Equation 1.

Where V = volume of the tank, h = height, r = radius.

From the diagram attached,

Given: h = 17 m, r = 7 m.

Substitute these values into equation 1

V = 1/3(17)(7²)(3.14)

V = 871.87 m³.

Hence the amount of water the tank can hold is 871.87 m³

If the water is drained to a tank of 200 m³,

The number of tanks it can fill is = 871.87/200 = 4 tanks.

3 0
3 years ago
The golden ratio is a solution to a quadratic equation.
Crank

Answer:

Below.

Step-by-step explanation:

a.    Φ^2 − Φ − 1 = 0

Φ2 − Φ = 1

(Φ - 0.5)^2 - 0.25 = 1

(Φ - 0.5)^2 = 1.25

Φ - 0.5 = √(1.25)      (We only take the positive root).

Φ  = 0.5 + √(1.25)

b. I used Completing the square.

c.  Φ is irrational That is it cannot be represented as a fraction a/b and because of this it can only be approximated by a decimal.

6 0
3 years ago
The area of the figure
muminat

Answer: Go to JW.org.

Step-by-step explanation: Its where you can find all your reliable answers.

7 0
3 years ago
Today, 5 friends went out for lunch. Their total bill was $33.94 , including tax and gratuity. One of them ordered only soda and
Naya [18.7K]
The other four friends payed $8.02 each
4 0
3 years ago
Darius wrote 17 minus 2 to the second power equals 225. explain his error
sashaice [31]

Answer:

Darius took (17-2)^2 instead of 17-2^2, ignoring the order of operations. The answer is 13.

Step-by-step explanation:

To solve 17-2^2, Darius should first square two, then subtract that from 17. By subtracting 2 from 17 first, you ignore the PEMDAS rule (parenthesis, exponents, multiplication/division, addition/subtraction).

2^2=2

17-4=13

4 0
4 years ago
Other questions:
  • The price of diamond varies directly as square of its weight. The price of a 12 decigrams diamond is $7200. If diamond breaks in
    8·1 answer
  • A television is measured by its diagonal. if the height of a 70 inch television is 42 inches what is the width
    5·1 answer
  • PLEASE HELP THIS IS DUE TOMORROW!!!!
    8·1 answer
  • What is the value of r?<br> Please answer in exact value
    6·2 answers
  • One pound equals sixteen ounces right?
    7·2 answers
  • Lol it looks easy but everytime i submit my answer it ends up wrong sooo help pls
    15·2 answers
  • Please Help Me ASAP I Need <br> This For My grade
    9·1 answer
  • Consider the function f(x) = x^3 - 7x^2 - 2x + 14
    6·1 answer
  • Which shape has a greater perimeter?
    5·2 answers
  • Find the inverse of the rational function <br> F(x)= 2x/x+3, x≠-3
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!