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irina [24]
3 years ago
5

Some wanna look at this and help me ?​

Mathematics
1 answer:
Vika [28.1K]3 years ago
4 0
21x+1+14x+4=180
35x+5=180
35x=175
X=5
21(5)+1
105+1
Answer
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A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he s
Mrrafil [7]

8 \times 25\% \\  = 8 \times  \dfrac{25}{100}  \\  = 2

Answer : He spends 2 hours doing paperwork each day.

Hope this helps. - M
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3 years ago
Measuring the height of a tree is usually more difficult than measuring the diameter of the tree. Therefore, many researchers us
LenKa [72]

Answer:

(B) (0.396, 1.712)

Step-by-step explanation:

From the information given;

Confidence Interval = 0.95

Significance Level = 1 - 0.95 = 0.05

The confidence interval for regression coefficient beta (whereby in this case it is the coefficient of the diameter) is expressed by:

= ( Beta ^- \ t_{n-2}, \alpha/2 ( S.E \ of \ \^ \ \ ), Beta^+ \ t_{n-2}, \alpha/2 ( S.E \ of \ \^ \ \ ))

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= (1.054 - t_{29,0.025} *(0.322), 1.054 + t_{29,0.025}*(0.322))

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8 0
2 years ago
Tom opens a bank account and makes an initial deposit of 500$. Then banker tells Tom that he is going to receive an annual rate
Arturiano [62]

~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$500\\ r=rate\to 6\%\to \frac{6}{100}\dotfill &0.06\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &15 \end{cases} \\\\\\ A=500\left(1+\frac{0.06}{1}\right)^{1\cdot 15}\implies A=500(1.06)^{15}\implies A\approx 1198.28

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2 years ago
Equivalent Ratios: 300:800 = 30:
Dima020 [189]

Answer:

30:80

Step-by-step explanation:

Because 300 divided by ten is 30 so 800 divided by ten is 80 :)

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The height of each story in a hotel is feet. The height is measured from the ceiling to the floor. The hotel has 2 underground l
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Answer:

a feet

Step-by-step explanation:

7 0
3 years ago
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