Mathematics, 16.04.2020 06:21 glowbaby123

Using Factors to Write Equivalent Expressions
Which expression has an equivalent value to x2 + 9x + 8 for all values of x?
(x + 1)(x + 8)
(x + 2)(x+6)
(x + 4)(x + 4)
(x + 5)(x + 4)

Answers: 1

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Answer from: s131845

(x + 1)(x + 8)

Step-by-step explanation:

I graphed the equation on the graph below to find the x values.

Using Factors to Write Equivalent Expressions Which expression has an equivalent value to x2 + 9x +

Answer from: dleflore80

Your answer is the first option, (x + 1)(x + 8)

We can find this by expanding the brackets and seeing if the resultant expression is x² + 9x + 8. We can expand it using the FOIL method (first, outside, inside, last)

(x + 1)(x + 8)

x × x = x² (first)
x × 8 = 8x (outside)
1 × x = x (inside)
1 × 8 = 8 (last)

Adding these all together gives us x² + 8x + x + 8 = x² + 9x + 8, which is the original expression.

I hope this helps!

Answer from: Quest

step-by-step explanation:

if it takes 8 pounds to make 12 divide 12 by 8 and you get 1.5, 1.5 x 16 = 24

Answer from: Quest

"it's not the heat, it's the humidity". that's a partly valid phrase you may have heard in the summer, but it's actually both. the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature. this has important considerations for the human body's comfort. when the body gets too hot, it begins to perspire or sweat to cool itself off. if the perspiration is not able to evaporate, the body cannot regulate its temperature. evaporation is a cooling process. when perspiration is evaporated off the body, it effectively reduces the body's temperature. when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases. in other words, the human body feels warmer in humid conditions. the opposite is true when the relative humidity decreases because the rate of perspiration increases. the body actually feels cooler in arid conditions. there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation: