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pochemuha
3 years ago
7

In ADEF, the measure of ZF=90°, the measure of ZE=53°, and DE = 57 feet. Find the

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Answer:

Check pdf

Step-by-step explanation:

Download pdf
You might be interested in
Twenty students choose a piece of fruit from a list of 4 fruits: apple banana grape and pear. The theoretical probability that a
Over [174]

Answer:

Significant difference of 0.20

Step-by-step explanation:

No of student = 20

No of fruits available =4

EAch student is independent of the other.

Hence theoretical probability that a student will choose a banana is=1/4=0.25.

But actual experiments showed that only 1 student selected banana out of 20

Experimental probability that a student will choose a banana is.=1/20 =0.05

The difference between the two = 0.25-0.05 = 0.20

Thus there is a significant difference between Experimental probability that a student will choose a banana and theorical probability that a student will choose a banana

3 0
3 years ago
Read 2 more answers
Quadrilateral AGHY~Quadrilateral BFRS. Name the corresponding congruent angles and the corresponding ratios of the sides
bixtya [17]
If q<span>uadrilateral AGHYis congruent to quadrilateral BFRS, then
</span>
\angle A\sim \angle B,
\angle G\sim \angle F,
\angle H\sim \angle R,
\angle Y\sim \angle SB
and
AG\sim BF,
GH\sim FR,
HY\sim RS,
AY\sim BSF.


6 0
3 years ago
Clara has a purse in the shape of a trapezoid.The top of the purse measures 22 cm while the bottom of the purse measures 36 cm.
Blababa [14]

Answer:

38

Step-by-step explanation:

multiply 22 x 36 then subtract 792-754

4 0
2 years ago
Read 2 more answers
Find all solutions ​
Anton [14]

Answer:

The solutions of the equation are 0 , π

Step-by-step explanation:

* Lets revise some trigonometric identities

- sin² Ф + cos² Ф = 1

- tan² Ф + 1 = sec² Ф

* Lets solve the equation

∵ tan² x sec² x + 2 sec² x - tan² x = 2

- Replace sec² x by tan² x + 1 in the equation

∴ tan² x (tan² x + 1) + 2(tan² x + 1) - tan² x = 2

∴ tan^4 x + tan² x + 2 tan² x + 2 - tan² x = 2 ⇒ add the like terms

∴ tan^4 x + 2 tan² x + 2 = 2 ⇒ subtract 2 from both sides

∴ tan^4 x + 2 tan² x = 0

- Factorize the binomial by taking tan² x as a common factor

∴ tan² x (tan² x + 2) = 0

∴ tan² x = 0

<em>OR</em>

∴ tan² x + 2 = 0

∵ 0 ≤ x < 2π

∵ tan² x = 0 ⇒ take √ for both sides

∴ tan x = 0

∵ tan 0 = 0 , tan π = 0

∴ x = 0

∴ x = π

<em>OR</em>

∵ tan² x + 2 = 0 ⇒ subtract 2 from both sides

∴ tan² x = -2 ⇒ no square root for negative value

∴ tan² x = -2 is refused

∴ The solutions of the equation are 0 , π

4 0
3 years ago
Read 2 more answers
Karl earned scores of 58, 88, 80, and 70 on his first 4 Chemistry tests. What is the minimum score he needs to earn on his fifth
OLga [1]

Answer:

79

Step-by-step explanation:

(58+88+80+70+ x)/5=75

75*5=296x

375=296x

x=375-296

x=79

8 0
3 years ago
Read 2 more answers
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