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Sever21 [200]
3 years ago
15

2.1 + 3.32 – 1.4 = ? A. 6.82 B. 4.02 C. 5.42 D. 4.2

Mathematics
2 answers:
goblinko [34]3 years ago
8 0
4.02 is the answer., B.
Westkost [7]3 years ago
3 0
The answer is 4.02 hope this helps
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Can someone help me with this problem?
masya89 [10]
5/7, I don't know what that is as a decimal, but I hope it helps
5 0
3 years ago
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Drew wants to buy exercise equipment that costs $140 and the sales tax is 5.57% what is the total cost of the equipment
Eddi Din [679]

Answer:

$147.80

Step-by-step explanation:

140 x .0557 = 7.80 Tax

Add tax to price

140 + 7.80 = $147.80

8 0
2 years ago
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One Endpoint is 9,18 and the midpoint is 14,16 what the other end point
Valentin [98]
\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%  (a,b)
&({{ 9}}\quad ,&{{ 18}})\quad 
%  (c,d)
&({{ x}}\quad ,&{{ y}})
\end{array}\qquad
%   coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)

\bf \left( \cfrac{x+9}{2}~,~\cfrac{y+18}{2} \right)=\stackrel{\textit{midpoint}}{(14,16)}\implies 
\begin{cases}
\cfrac{x+9}{2}=14\\\\
x+9=28\\
\boxed{x=19}\\
-------\\
\cfrac{y+18}{2}=16\\\\
y+18=32\\
\boxed{y=14}
\end{cases}
7 0
3 years ago
A recent survey of 128 high school students indicated the following information about release times from school. -35 percent wan
wlad13 [49]

Answer:

The interval is for those that want to get out earlier is between 43 student to 47 students

The interval is for those that want to get out later is between 48 student to 50 students

Step-by-step explanation:

Given that:

sample size n=128

Probability of those  that want to get out earlier = 0.35.

The mean  =  n × probability = 0.35 × 128 = 44.8 ≈ 45

Margin of error = 4% = 0.04 × 44.8 = 1.79 ≈ 2

Therefore the interval = mean ± Margin of error = 45 ± 2 = (43, 47)

The interval is for those that want to get out earlier is between 43 student to 47 students

Probability of those  that want to get out later = 0.39.

The mean  =  n × probability = 0.39 × 128 = 49.92 ≈ 50

Margin of error = 4% = 0.04 × 50 =  2

Therefore the interval = mean ± Margin of error = 50 ± 2 = (48, 52)

The interval is for those that want to get out later is between 48 student to 50 students

the group that wants to get out of school earlier to win after all the votes are counted if those that have no opinion decide that they want to go earlier

5 0
3 years ago
If the radius of a circle is 9 cm, how long is the diameter
Anika [276]

Answer:

18 cm

Step-by-step explanation:

3 0
3 years ago
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