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zhenek [66]
3 years ago
11

Which of the following are solutions to the quadratic equation? Check all that apply x^2 + 12x + 36 = 7

Mathematics
1 answer:
garik1379 [7]3 years ago
5 0

Answer:

x = -6 + \sqrt{7}, x = -6 - \sqrt{7}

Step-by-step explanation:

(x + 6)² = 7

x + 6 = + or - \sqrt{7}

x = -6 + \sqrt{7}, x = -6 - \sqrt{7}

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Sal was tired of waiting for Amir to show up at their meeting place, so he started running at an average speed of 4.5 mph withou
sergiy2304 [10]
A=-.25+6.7t, s=.75+4.5t  when Amir catches up a=s so:

-.25+6.7t=.75+4.5t  add .25 to both sides

6.7t=1+4.5t subtract 4.5t from both sides

2.2t=1  divide both sides by 2.2

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t≈0.45 hr (to nearest hundredth)
4 0
3 years ago
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Find the midpoint of the segment with the following endpoints.<br> (2,9) and (8,1)
vazorg [7]

Answer:

\displaystyle (5,5)

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>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Midpoint Formula: \displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

Step-by-step explanation:

<u>Step 1: Define</u>

Point (2, 9)

Point (8, 1)

<u>Step 2: Identify</u>

(2, 9) → x₁ = 2, y₁ = 9

(8, 1) → x₂ = 8, y₂ = 1

<u>Step 3: Find Midpoint</u>

Simply plug in your coordinates into the midpoint formula to find midpoint

  1. Substitute in points [Midpoint Formula]:                                                         \displaystyle (\frac{2+8}{2},\frac{9+1}{2})
  2. [Fractions] Add:                                                                                                  \displaystyle (\frac{10}{2},\frac{10}{2})
  3. [Fractions] Divide:                                                                                              \displaystyle (5,5)
7 0
3 years ago
Which expression is equivalent to 5 to the power3
11111nata11111 [884]

Answer:

What are the given expressions??

Step-by-step explanation:

Since I can't see you're options, I'll just give you an answer that'll hopefully help...

5³ = 125

Hope that helps you!!  :)

4 0
3 years ago
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ivann1987 [24]
I believe it's 15, but correct me if I'm wrong
This is because there is one 10 in 15. This gives you 3 tens and 5 in the ones.
6 0
3 years ago
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Answer:

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