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
trapecia [35]
3 years ago
6

Solve with substitution y = x - 15 y = 4x

Mathematics
1 answer:
Oduvanchick [21]3 years ago
7 0

Answer:

(-5, -20)

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Coordinates (x, y)
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define</u>

y = x - 15

y = 4x

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

<em>Substitution</em>

  1. Substitute in <em>y</em>:                                                                                                4x = x - 15
  2. [Subtraction Property of Equality] Subtract <em>x</em> on both sides:                      3x = -15
  3. [Division Property of Equality] Divide 3 on both sides:                                x = -5

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define original equation:                                                                               y = 4x
  2. Substitute in <em>x</em>:                                                                                                y = 4(-5)
  3. Multiply:                                                                                                           y = -20
You might be interested in
Which of the following numbers is the smallest 0.008 or 1/3 or 0.048 or 0.36 or 1/9
RideAnS [48]

Answer:

The smallest number is 0.008

Step-by-step explanation:

To find out which number is the smallest we convert the decimals to percentages

That's

0.008 × 100= 0.8%

1/3 × 100 = 33.3%

0.048 × 100 = 4.8%

0.36 × 100 = 36%

1/9 × 100 = 11.1%

Comparing from the above percentages the smallest one is 0.8% which is

0.008.

Hope this helps you.

4 0
3 years ago
In ΔVWX, w = 520 cm, ∠W=93° and ∠X=68°. Find the length of x, to the nearest centimeter.
Pani-rosa [81]

Answer:

482.7972612 cm. Just round from here.

Step-by-step explanation:

Ah, the sine law questions. Ok so you know \frac{sin(A)}{a} = \frac{sin(B)}{b} = \frac{sin(C)}{c}. If you don't, voila. Obviously, the variables are different but we can use the same formula. So, we have

\frac{sin(X)}{x}  = \frac{sin(W)}{w}

Plug in:

\frac{sin(68)}{x} = \frac{sin(93)}{520}

The answer when solving for x is the above

7 0
3 years ago
PLS HELLLP<br> PICTURE BELOW
Lesechka [4]

Answer:

it is commutative property of add

Step-by-step explanation:

commutative propert:

a+b=b+a

same as

5x-8=-8+5x

5 0
3 years ago
Find the HCF and LCM of 126 and 234?
Leni [432]

Answer:

Below in bold.

Step-by-step explanation:

Find the prime factors:-

126 = 2 * 3 * 3 * 7

234 = 2 * 3 * 3 * 13

So the GCF =  2 * 3 * 3 = 18.

The LCM = 2 * 3 * 3  * 7 * 13

= 1638.

8 0
3 years ago
$7.50 admission 20%off 5.75% taz total is
pickupchik [31]
7.5*.2=1.5 
- 1.5= 6.5 w/ 20% off

6.5*0.0525=0.34125- rounded= .34+6.5=

$6.84
Hope this helps!!!!
5 0
3 years ago
Other questions:
  • A 2001 study asked 1,924 male and 3,666 female undergraduate college students their favorite color. A 95% confidence interval fo
    13·1 answer
  • The trisectors of angles $B$ and $C$ of scalene triangle $ABC$ meet at points $P$ and $Q$, as shown. Angle $A$ measures 39 degre
    10·1 answer
  • Simplify: <br><br> 6x + 2 - 1 - 4 - 3 - 2x + 2
    9·2 answers
  • WILL MAKE YOU BRAINLIEST!!!!!
    12·2 answers
  • What is 74 divided by 12?plz help I need this assignment done before 3:30 and it’s 2 hours until time
    15·2 answers
  • Please Help!! What is the next step in the proof? Choose the most logical approach.
    13·1 answer
  • If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g - 1)(3)?
    14·1 answer
  • Pls help
    15·2 answers
  • 10 points!! Please give me real help!!
    8·1 answer
  • Im so tired i cannot right now lol<br>so help pls ​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!