1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
egoroff_w [7]
2 years ago
13

Question 1 of 10

Mathematics
1 answer:
Radda [10]2 years ago
8 0

Answer:

C is correct

Step-by-step explanation:

{x}^{2}  = 18 \\ x =  \frac{ + }{}  \sqrt{18}  =  \frac{ + }{}  \sqrt{9 \times 2}  =  \\ x =  \frac{ + }{}  \sqrt{9}  \times  \sqrt{2}   \\ x =  \frac{ + }{} 3 \sqrt{2}

You might be interested in
A train leaves the station at 9:00 pm traveling east at 36 miles per hour. A second train leaves the station at 10:00 pm traveli
sveta [45]
The answer is c.6:00 am

Sorry if wrong
7 0
3 years ago
Jordan places two boards end to end to make one shelf. The first board is 47-100 meter long.The second board is 5-10 meter long.
puteri [66]
The fraction 5/10 is the same as 50/100 because they are equivalent. It will take 10 group of 10 to get to the denominator 100, so it will take 10 groups of 5 in the numerator to make it equal.

The answer is 50/100.
4 0
3 years ago
Urgent!! Will mark brainliest!!
horsena [70]

Answer:

1) x is negative and y is positive ⇒ last answer

2) cotФ = -12/35 ⇒ second answer

3) The right identity is cot²Ф - csc²Ф = -1 ⇒ last answer

Step-by-step explanation:

* For any point (x , y) lies on the terminal side of the angle Ф

 in standard position

* x = cosФ and y = sinФ

- If Ф in the first quadrant, then x , y are positive

∴ All trigonometry functions are positive

- If Ф in the second quadrant, then x is negative , y is positive

∴ sinФ only is positive

- If Ф in the third quadrant, then x is negative , y is negative

∴ tanФ only is positive

- If Ф in the fourth quadrant, then x is positive , y is negative

∴ cosФ only is positive

* Lets solve the problems

∵ Ф = 3π/4 ⇒ (135°)

∴ It lies on the second quadrant

∴ x is negative and y is positive

* Lets revise the reciprocal of sinФ, cosФ and tanФ

- cscФ = 1/sinФ

- secФ = 1/cosФ

- cotФ = 1/tanФ

∵ secФ = -37/12

∴ cosФ = -12/37

∵ π/2 < Ф < π

∴ Ф lies on the second quadrant

∴ cotФ is negative values

∵ tan²Ф = sec²Ф - 1

∵ secФ = -37/12

∴ tan²Ф = (-37/12)² - 1 = 1225/144 ⇒ take√ for both sides

∴ tanФ = ± 35/12

∵ cotФ = ± 12/35

∵ cotФ is negative value

∴ cotФ = -12/35

* In the standard position of the angle Ф the terminal

 of it lies on the unit circle O

- By using Pythagorean theorem

∵ x² + y² = 1

∵ x = cosФ and y = sinФ

∴ cos²Ф + sin²Ф = 1 ⇒ (1)

∴ cos²Ф = 1 - sin²Ф

∴ sin²Ф = 1 - cos²Ф

* Divide (1) by cos²Ф

∴ cos²Ф/cos²Ф + sin²Ф/cos²Ф = 1/cos²Ф

* Remember sin²Ф/cos²Ф = tan²Ф and 1/cos²Ф = sec²Ф

∴ 1 + tan²Ф = sec²Ф ⇒ (2) ⇒ subtract 1 from both sides

∴ tan²Ф = sec²Ф - 1 ⇒ subtract sec²Ф from both sides

∴ tan²Ф - sec²Ф = -1

* Divide (1) by sin²Ф

∴ cos²Ф/sin²Ф + sin²Ф/si²Ф = 1/sin²Ф

* Remember cos²Ф/sin²Ф = cot²Ф and 1/sin²Ф = csc²Ф

∴ cot²Ф + 1 = csc²Ф ⇒ (3) ⇒ subtract 1 from both sides

∴ cot²Ф = csc²Ф - 1 ⇒ subtract csc²Ф from both sides

∴ cot²Ф - csc²Ф = -1

* The right identity is cot²Ф - csc²Ф = -1

3 0
3 years ago
Flashback! Do you remember what these numbers tell you? The 10 means it will pay only $10,000 maximum for injury to any one pers
iogann1982 [59]

Answer:

  • 10 -- $10k to any one person
  • 20 -- $20k to all persons, total
  • 5 -- $5k for property damage

  all are <em>maximum</em> values

Step-by-step explanation:

Insurance contracts specify <em>maximum</em> payments, not <em>minimum</em> payments. The numbers mean ...

The 10 means it will pay only $10,000 maximum for injury to any one person in an accident.

The 20 means it will pay a maximum of $20,000 total to people injured in one accident.

The 5 means that it will pay a maximum of $5,000 in property damage for one accident.

6 0
3 years ago
Maths equation need help please
Olin [163]

Answer:

I FIGURED IT OUT!

Step-by-step explanation:

a = 3

b = 3

c = 5

d = 2

give me brainliest

7 0
2 years ago
Other questions:
  • Please help! Correct answer only, please! I need to finish this assgnment this week! Matrix P has a dimensions of 3 X 4 and Matr
    7·1 answer
  • Is the number 8 a multiple of 8 and it is also a factor of 8
    5·1 answer
  • Which event is most likely to be independent of A?
    15·2 answers
  • So a company has increased the number of jelly beans in a packet. Their new packet has 25% more jelly beans than their original
    6·1 answer
  • A survey of 250 households showed 26 owned at least one snow blower. Find a point estimate for p, thepopulation proportion of ho
    8·1 answer
  • Factor and solve x^2-8x-20 using the coefficient of 1 method
    10·2 answers
  • Need help on this. I would appreciate it a lot!
    15·1 answer
  • James and Kris are in the school play. James has 42 lines to memorize, which is 6 times
    14·1 answer
  • If c varies directly as (r + 1) and c = 8, when r= 3, calculate the value of r when c= 20.
    6·2 answers
  • OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS- PLSS TELL ME
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!