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ohaa [14]
3 years ago
6

Triunghiul isoscel ABC are latura [BC] situata intr un plan alfa si se proietcteaza pe plan dupa triunghiul dreptunghic DBC. Sti

inda ca m(BDC)=90°, iar BD=16 cm si CD=12 cm, aflati
a) cosinusul unghiului ABC





b) lungimea laturii [BC] a triunghiului ABC
Mathematics
1 answer:
Zarrin [17]3 years ago
4 0
Maybe try b
I think it b
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The area of the shaded region is 20 cm. Find the value of x
dolphi86 [110]
If you could put more info ab this then i would understand what u want me to put
3 0
2 years ago
Brenda has $500 in her bank account. Every week she withdraws $30 for
JulsSmile [24]

Answer:

10 weeks

Step-by-step explanation:

lets build a equation for this

500-30(x)........where x is the number of weeks

500-30(10)= $200 left

so she can maximum withdraw money for about 10 weeks

5 0
2 years ago
Logan bought 10 balloons.Two-fifths of the balloons are purple how many of the balloons are purple? Draw a model to show how you
seropon [69]
4 purple balloons is the answer
7 0
2 years ago
Find the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one
ziro4ka [17]

The probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one trial is 9% will be <u>0.000343311 %</u>

<h3>What is the probability?</h3>

Probability is synonymous with possibility. It is concerned with the occurrence of a random event.

Probability can only have a value between 0 and 1. Its simple notion is that something is very likely to occur. It is the proportion of favorable events to the total number of events.

No of failure,n = 7

No of trials,x≥6

A binomial probability is represented as;

\rm P(x) = nC_x p^z(1-p)^{n-r}

Substitute the given data;

P(x \geq 6) = 7C_6 \times 9^6 \times 91-9)^{7-6} +7C_7 (9)^7+(1-9)^{(7-7)}

\rm P(x \geq 6)  = 0.000000343311 \\\\ P(x \geq6)=0.000343311 \%

Hence,the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one trial is 9% will be <u>0.000343311 %</u>

To learn more about probability, refer to the link: brainly.com/question/795909.

#SPJ1

4 0
2 years ago
what is the circumference of a circle if the radius of the circle is 2.2 in terms of pi? a) 1.1 pi b) 1.21 pi c) 2.2 pi d) 4.4 p
Darya [45]
Cicumference =  Dπ  or  2rπ

thus if r = 2.2 
then C  = 2 (2.2)π
             =  4.4π

D is the answer
7 0
3 years ago
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