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Kazeer [188]
2 years ago
7

Justin is on a road trip. Over the past 2 days, he has driven a total distance of 715 miles at an average speed of 65 miles per

hour. If
Justin drove 2 hours today, how many hours did he drive yesterday?
Mathematics
1 answer:
julia-pushkina [17]2 years ago
7 0

Answer:

1 hour did he drive yesterday

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(2A)<br> Find f(2x + 4) for f(x) = 1 - x2
Aleksandr-060686 [28]

Answer:

f(2x + 4) = -4x² - 16x - 15

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<u> </u>

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients
  • Expanding (FOIL)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = 1 - x²

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                          f(2x + 4) = 1 - (2x + 4)²
  2. Expand [FOIL]:                                                                                                  f(2x + 4) = 1 - (4x² + 16x + 16)
  3. (Parenthesis) Distribute negative:                                                                   f(2x + 4) = 1 - 4x² - 16x - 16
  4. Combine like terms:                                                                                          f(2x + 4) = -4x² -16x - 15
8 0
2 years ago
Use a polynomial Identity to expand this squared binomial<br> (x + 6)2
krek1111 [17]

Answer: x2 + 12x

Step-by-step explanation:

7 0
3 years ago
Cuanto es la respuesta de -126=14k?
N76 [4]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \text{k =   - 9}}}}}

Step-by-step explanation:

\star{ \text{ - 126 = 14k}}

\text{step \: 1 \: : Intercambia los lados de la ecuación}

\hookrightarrow{ \sf{14k =  - 126}}

\text{step \: 2 : Divide ambos lados por 14}

\hookrightarrow{ \sf{ \frac{14k}{14}  =  \frac{ - 126}{14}}}

\text{step \: 3 \:  : Calcular}

\hookrightarrow{ \sf{k =  - 9}}

\text{el valor de k es  - 9}

------------------------------------------------------------

Translation in English:

Step 1 : Swap the sides of the equation

Step 2 : Divide both sides by 14

Step 3 : Calculate

\sf{Hope \: i \: helped ! }

\sf{Best \: regards !!}

~\sf{TheAnimeGirl}

6 0
3 years ago
Read 2 more answers
Find the slope and y-intercept of y=10x​
masha68 [24]

Answer:

the slope would be 10

and the y-intercept would be 0

5 0
3 years ago
Read 2 more answers
(THIS IS A TEST I NEED HELP)
Leya [2.2K]

Answer:

Option (B)

Step-by-step explanation:

Length of PR = 4

RS = 4

QS = 4

For the length of PT,

PT² = RT² + PR² [Since, PT is the diagonal of rectangle PRT]

PT² = QS² + PR² [Since, RT ≅ QS]

PT² = 4² + 7²

PT² = 16 + 49

PT² = 65

Now for the length of PQ,

PQ² = QT² + PT²

PQ² = RS² + PT² [Since, QT ≅ RS]

PQ² = 4² + 65

PQ² = 16 + 65

PQ = √81

PQ = 9

Therefore, length of diagonal PQ is 9 units.

Option (B) will be the answer.

4 0
3 years ago
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