3 years ago

Simplify: (−2a2b) • (4a5b2) please can someone help!

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

5 0

Hey there hope this helps you out

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Select all expressions that are equivalent to x2 - 4x – 32.

ELEN [110]

Answer:

(x + 4)(x – 8)

Step-by-step explanation:

1. (x – 16)(x + 2)

x² - 2x - 16x - 32

x² - 18x - 32

2. (x + 2)(x – 16)

x² - 16x + 2x - 32

x² - 14x - 32

3. (2 – )(x + 4)

2x + 8

4. (x + 8)(x – 4)

x² - 4x + 8x - 32

x² + 4x - 32

5. (x + 4)(x – 8)

x² - 8x + 4x - 32

x² - 4x - 32

6. (x – 4)(x+8)

x² + 8x - 4x - 32

x² + 4x - 32

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3 years ago

The weight of people in a small town in missouri is known to be normally distributed with a mean of 154 pounds and a standard de

ad-work [718]

If a random sample of 20 persons weighed 3,460, the sample mean x-bar would be 3460/20 = 173 pounds.
The z-score for 173 pounds is given by:
$z=\frac{173-154}{29}=0.655$
Referring to a standard normal distribution table, and using z = 0.66, we find:
$P(\bar x\ \textless \ 173)=0.7454$
Therefore
$P(\bar x\ \textgreater \ 173)=1-0.7454=0.2546$
The answer is: 0.2546

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4 years ago

The total cost, c, of belonging to two different gyms for m months is shown on the graph. The lines intersect at the point (4,25

lys-0071 [83]

Answer: at 4 months the cost for each gym is $250

Step-by-step explanation:

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3 years ago

Ramauri is thinking of a mystery number. He cuts it in half then takes away 9. The result is -5. What is the mystery number

MaRussiya [10]

Answer:

Step-by-step explanation:

mystery number= x

he divdes x by 2 and then subtracts 9 and gets -5. reverse the order to find x.

-5+9 which is 4 times 2 which is 8. x is 8

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3 years ago

List all the names this shape can be called

erma4kov [3.2K]

Answer:

Step-by-step explanation:

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3 years ago