3 years ago

3.2x20 show work please

1 answer:

6 0

20 x 3.2 = 64.0

It is equal to 64 because of you do long multiplication, it is 32 x 20 then add back in the decimal point in between the 4 and 0 for the answer.

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A new restaurant with 134 seats is being planned. Studies show that 62% of the customers demand a smoke-free area. How many se

zzz [600]

Answer: 100

Step-by-step explanation:

Given : The total number of seats planned in new restaurant =134

The percentage of customers demand a smoke-free area = 62%

It can also be written as $62\%=\dfrac{62}{100}=0.62$

The mean of this binomial distribution will be :-

$\mu=np\\\\\mu=(134)(0.62)=83.08$

Standard deviation:-

$\sigma=\sqrt{np(1-p)}\\\\\Rightarrow\sigma=\sqrt{134(0.62)(0.38)}\approx5.6$

Now, the number of seats should be in the non-smoking area in order to be very sure of having enough seating there :-

$\mu+3\sigma=83.08+3(5.6)=99.88\approx100$

4 0

2 years ago

Write the augmented matrix for each system of equations.

Virty [35]

Answer:

see below

Step-by-step explanation:

List the coefficients and constant for an equation in one row of the matrix. The variables should be in the same order. Any missing terms are replaced by zero.

$\left[\begin{array}{ccc|c}9&-4&-5&9\\7&4&-4&-1\\6&-6&1&-5\end{array}\right]$

8 0

2 years ago

?/1 What percent of 29 is 3? Round to the nearest tenth of a percent.

Marina CMI [18]

Answer:

10.34%

Step-by-step explanation:

29×x%=3

X=10.34%

7 0

2 years ago

1. (-2)^-5 A. 10 B. -1/32 C. -32 D. 1/32

Alinara [238K]

Answer:

(-2)^-5

= 1/(-2)^5

=1/-32

=B. -1/32

5 0

2 years ago

Can somebody help with this math homework

Lelu [443]

Whats the math you need help with?

4 0

2 years ago