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Ray Of Light [21]
3 years ago
9

WILL GIVE BRAINLIEST!! PLEASE SHOW YOUR WORK!

Mathematics
1 answer:
LenKa [72]3 years ago
5 0

Simplify:

Solution ===>  −7      +     12    −     3(50    −    4(2     +      3))   =========>      -85

=       5       −         3(50        −     4(2      +     3))

=        5       −       3(50      −       (4)(5))

=        5        −     3(50     −     20)

=        5       −        (3)(30)

=        5      −      90

=               −85

Answer   ================>         -85









Simplify:

1/3   +   6(2/3     -      1/6)^2

1/3    +     6(1/2)^2

1/3     +    6(1/4)

1/3     +      3/2

Answer    =======>    11/6   =========>      Decimal  =======>    1.833333.....






Hope that helps!!!!                                                         : )



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Eduardwww [97]

Answer:

A

Step-by-step explanation:

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the equation is x= 4

6 0
3 years ago
Simplify the given polynomial expressions as much as possible
bazaltina [42]

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34a^2 + 21a - 20

Step-by-step explanation:

(12a^2 + 6a -8) - (-22a + 12 - 15a)

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7 0
2 years ago
HELP!!!!Find the measurement of 4(Explain)
nika2105 [10]

Answer:

26°

Step-by-step explanation:

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I hope that helped!

3 0
2 years ago
Read 2 more answers
Simplify the expression r^-3 s^5 t^2/r^2 st^-2
Hoochie [10]
R/s^5t^r2st-2/r^3
hope this helps










5 0
3 years ago
Many people feel that the drying of pavement marking paint is much too slow. You spend several days looking for the fastest dryi
slavikrds [6]

Answer:

21

Step-by-step explanation:

Using<em> Simple Random Sampling</em>, we can estimate the sample size by the formula

\bf n=\frac{Z^2S^2}{e^2}

where  

n = sample size

Z = the z-score corresponding to the confidence level 99.5%

S = the assumed standard deviation = 3 seconds

e = margin of error = 2 seconds

<em>It is worth noticing that the higher the confidence level, the larger the sample should be. </em>

The z-score corresponding to a confidence level of 99.5% can be obtained either with a table or the computer and equals

Z = 3.023

Replacing the values in our formula

\bf n=\frac{(3.023)^23^2}{2^2}=20.5616\approx 21

So the size of the sample should be at least 21.

7 0
3 years ago
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