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3 years ago

Solve y=x+3 and 2x+y=-6 by substitution

Mathematics

2 answers:

allsm [11]3 years ago

6 0

Hope this is right....

BigorU [14]3 years ago

5 0

Answer:

x = -3

Step-by-step explanation:

substitute y in the second equation for x + 3:

2x + (x + 3) = -6

2x + x + 3 = -6

3x + 3 = -6

-3 -3

3x = -9

/3 /3

x = -3

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Let F(x) = x^2 – 15 and G(x)= 4 - x Find (F/G)(–7) =

KATRIN_1 [288]

Answer:

$\displaystyle \bigg( \frac{F}{G} \bigg)(-7) = \frac{34}{11}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Functions
Function Notation

Step-by-step explanation:

Step 1: Define

Identify

F(x) = x² - 15

G(x) = 4 - x

Step 2: Find

Substitute in functions: $\displaystyle \bigg( \frac{F}{G} \bigg)(x) = \frac{x^2 - 15}{4 - x}$

Step 3: Evaluate

Substitute in x [Function (F/G)(x)]: $\displaystyle \bigg( \frac{F}{G} \bigg)(-7) = \frac{(-7)^2 - 15}{4 - (-7)}$
Exponents: $\displaystyle \bigg( \frac{F}{G} \bigg)(-7) = \frac{49 - 15}{4 - (-7)}$
Subtract: $\displaystyle \bigg( \frac{F}{G} \bigg)(-7) = \frac{34}{11}$

8 0

3 years ago

My dog is 113cm tall how many meters tall is my dog? (Hint: 1m=100cm (hint: 1 m=100cm

Llana [10]

Answer:

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3 years ago

25/160 into a decimal??

Andrej [43]

Answer:

0.15625

Explanation:

Divide:

25 divided by 160

Which Equals by:

0.15625

Step-by-step explanation:

Hope this Helps!!

7 0

3 years ago

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Evaluate 5j +12 foreach listed value ofn. j= 4 j = 6

Bezzdna [24]

Answer: 32 and 42

Step-by-step explanation:

5j +12

j= 4

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20 + 12 = 32

5(6) + 12

5 times 6 = 30

30 + 12 = 42

6 0

3 years ago

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How do i do disss pls help

timofeeve [1]

Answer:

Step-by-step explanation:

8 + 8 = 16

Hope this helped! Have a nice rest of ur day! Plz mark as brainliest!!!

-Lil G

7 0

3 years ago