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Firdavs [7]
3 years ago
15

Given P (x)=x^2+2x-7, find P (-3)

Mathematics
1 answer:
leva [86]3 years ago
8 0

Answer:

P(-3) = -4

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>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

P(x) = x² + 2x - 7

P(-3) is x = -3

<u>Step 2: Evaluate</u>

  1. Substitute:                    P(-3) = (-3)² + 2(-3) - 7
  2. Exponents:                   P(-3) = 9 + 2(-3) - 7
  3. Multiply:                        P(-3) = 9 - 6 - 7
  4. Subtract:                       P(-3) = 3 - 7
  5. Subtract:                       P(-3) = -4
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Write the equation of a line perpendicular to 5x - 7y =-6 that passes through the point (-5,6)
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9514 1404 393

Answer:

  7x +5y = -5

Step-by-step explanation:

You can find the perpendicular line by swapping the x- and y-coefficients, and negating one of them. The new constant can be found by using the given point.

  7x +5y = 7(-5) +5(6) = -5

The perpendicular line through (-5, 6) is ...

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3 0
3 years ago
In a forested area, the number of trees, T can be expressed as a function of the initial number of trees planted. If the initial
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An ant can crawl 3/4 of a yard in 1/2 minute. How long will it take for the ant to crawl 12 yards?​
Elan Coil [88]

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6 mins

Step-by-step explanation:

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5 0
4 years ago
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Another question about angles
zvonat [6]

Answer:

ㄥBEC=70;ㄥABE=160

Step-by-step explanation:

(x-5)+(3x-5)+90=180

x-5+3x-5+90=180

4x+80=180

4x=100

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ㄥBEC=3*25-5=70

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3 years ago
Rebecca filled 28 glasses with orange juice for a camp breakfast. if each glass holds 1 cup of juice, how many quarts of orange
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The number of quarts of orange juice did Rebecca use is 7

Given that 28 glasses with orange juice are filled for a camp breakfast

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We need to find the number of quarts of orange juice did Rebecca use  

We know that a quarts has 4 cups

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Hence the number of quarts is 7

Learn more about Logical reasoning here

brainly.com/question/14458200

#SPJ4

7 0
2 years ago
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