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Natali5045456 [20]
3 years ago
12

the length of shadow of a house having 30m height is 30 root 3m find the length of shadow of the house having the height of 40 r

oot 3m at the same time​
Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
6 0

Answer:

Height(P)=30

base(B)=30√3

we know

TanA= P/B= 30/30√3

TanA =√3

A =60

now

Tan 60 = P/B

√3=40√3/B

B=40

Step-by-step explanation:

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nasty-shy [4]

I'm assuming this is a math question and all the tents equal the same thing, so to find the price for one tent, we would divide 40/3

Each tent is about $13.33

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3 years ago
An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the
inna [77]

Answer: 0.6812

Step-by-step explanation:

Let p be the population proportion of trees are infested by a bark beetle.

As per given: p= 12%= 0.12

Sample size : n= 1000

Number of trees affected in sample = 1000

Sample proportion of trees are infested by a bark beetle. = \hat{p}=\dfrac{127}{1000}=0.127

Now, the z-test statistic : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

So, z=\dfrac{0.127-0.12}{\sqrt{\dfrac{0.12\times 0.88}{1000}}}

z=\dfrac{0.007}{\sqrt{\dfrac{0.1056}{1000}}}\\\\\\=\dfrac{0.007}{\sqrt{0.0001056}}\\\\\\=\dfrac{0.007}{0.010276}\approx0.6812

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7 0
3 years ago
13/39 in simplest form
kifflom [539]

Answer:

1/3

Step-by-step explanation:

Find a number that goes into both the numerator and denominator, and divide, then you get 1/3

4 0
3 years ago
The ratio of boys to girls in a school is 5:4. if there are 500 girls , how many boys are there in the school?
lana [24]

Answer:

The number of boys in the school is;

625

Explanation:

Given that the ratio of boys to girls in a school is 5:4;

5\colon4

And there are 500 girls in the school.

The number of boys in the school will be;

\begin{gathered} \frac{B}{G}=\frac{5}{4} \\ G=500 \\ B=\frac{5\times G}{4}=\frac{5\times500}{4} \\ B=625 \end{gathered}

Therefore, the number of boys in the school is;

625

3 0
1 year ago
Evaluate tan^-1(1)<br> Easy points!!
STatiana [176]

Answer:

its 45

Step-by-step explanation:

lol thanks man

7 0
3 years ago
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