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zysi [14]
3 years ago
7

HELP ME PLEASE I'M CRYING! PLEASE!

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

1. 15*4= 60cm^2

2. 3.14*2*10.5 = 65.94‬= 66cm

3. r=C /2π      r=4cm

Step-by-step explanation:

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What is the distance between points -3 , 10 and 5 , 0​
fiasKO [112]

Answer:

5/4

Step-by-step explanation:

Use the slope formula

7 0
3 years ago
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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
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Carla is cutting pieces of string that are exactly inches long. How many pieces can she cut from a ball of string that is 100 fe
siniylev [52]

Answer:

the answer is  Length of each string = 195/8 inch

Total length= 100*12 = 1200 inch

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Step-by-step explanation:

6 0
3 years ago
What is the range of this relation (3,2) (-3,0) (-4,0) (-2,4)
Sveta_85 [38]

Answer:

-4 to 3

Step-by-step explanation:

look at the first number in each set then find the smallest and the biggest that is how you find range

4 0
3 years ago
Easy Question! 5pts + branliest for the correct answer!
Advocard [28]

Answer:

29

Step-by-step explanation:

For the two digit numbers it has to end in a zero or five and be greater than 9 and below 100.

There are 18 multiples of 5 that are 2 digit

For multiples of 7... it's easier to write it out because the total number will will less than 20.

There are 13 multiples of 7 that are 2 digits

Now you have to subtract the multiples of 7 that end in a 0 or 5

That give you 11 multiples

Add 11 and 18 to get 29

5 0
3 years ago
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