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raketka [301]
3 years ago
5

Simplify the expression completely.

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
3 0

Answer:

- 64s^33/ 9r^37

Step-by-step explanation:

See image below:)

FYI you can use the app photo math, you just take a pic of the problem and it gives you the answer and explains the steps and it is free.

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He spent $___ on gas?
Basile [38]

Answer:

Step-by-step explanation: 15 minus 6.2 is 8.8 thats how much he needs to fill upp if it is 3.50 a gallon you would multiply to get 30.8 thats how much money he spent on gas

7 0
3 years ago
College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal distribution, what percent
gayaneshka [121]

Answer:

  (a)  2%

Step-by-step explanation:

A score of 60 is 2 standard deviations below the mean (80 -2·10 = 60). The empirical rule tells you that 95% of the distribution is within 2 standard deviations of the mean. The remaining 5% is split evenly between those that are more than 2 SD above the mean and those that are more than 2 SD below the mean.

That tells you the percentage who failed is about 2.5%. The best answer choice is 2%.

_____

<em>Additional comment</em>

The empirical rule is a little bit sloppy, but it gets you in the ballpark. The actual percentage is closer to 2.275%.

6 0
3 years ago
Which pair of undefined terms is used to define a ray?
Ostrovityanka [42]

Answer:

A point and line is used to define a ray.

7 0
3 years ago
-4z+9z 2squared + 2z + 3 combine like terms
earnstyle [38]
7z+2squared+3
That's combined like terms
3 0
3 years ago
Im bo.reddddddddddddddddddddddddddddd<br><br><br> plz help me
cupoosta [38]

From the figure, we can notice that :

⊕   There are 4 striped blocks

⊕   The total number of blocks in the block set : 8

The ratio of striped blocks to total blocks in the block set is :

\sf{\implies \dfrac{4}{8}}

\sf{\implies \dfrac{1}{2}}

\sf{\implies 1 : 2}

<u>Answer</u> : B

8 0
3 years ago
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