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2 years ago

Which graph represents the function y = cos(4x)?

Mathematics

1 answer:

nydimaria [60]2 years ago

5 0

I jus need points so but I’m doing the same thing so I think it’s 3

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Please help me ASAP: Answer with : includes / not includes

Elodia [21]

Answer:

Step-by-step explanation:

The interval [4, ∞) all real numbers 4 and greater, whereas the interval (4,∞) not includes the endpoint 4.

3 0

3 years ago

If 8n+22=70 find the value of 3n

kondaur [170]

8n + 22 = 70

-22 -22

8n = 48
n = 48/8

n = 6

n*3 = 3n = 6*3 = 18

3n = 18

6 0

3 years ago

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If 3/4 of a ton of sand covers 2/5 of a playground, how many tons of sand are required to cover the entire playground?

saw5 [17]

3t/4=2p/5 solve for p

p=15t/8

p=1.875 tons of sand

5 0

3 years ago

what is 4.6 rounded ? what is 0.5 rounded? what is 4.5 rounded? what is 5.5 rounded? what is 0.6 rounded?

mr Goodwill [35]

Answer:

4.6 is 5 , 0.5 is 1, 4.5 is 5, 5.5 is 6 and 0.6 is 1

Step-by-step explanation:

If the second digit after the decimal is 5 or high you round it up

5 0

3 years ago

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Pls only do this if yk it because i’m giving correct answer brainliest! :))

Leno4ka [110]

Answer:

$x=2+\frac{1}{2}\sqrt[]{21}$

$x=2-\frac{1}{2}\sqrt{{21}$

Step-by-step explanation:

$4x^2-16x-26=-21$

Add 21 on both sides.

$4x^2-16x-26+21=-21+21$

$4x^2-16x-5=0$

a=4

b=-16

c=-5

$x=\frac{-b\frac{+}{}\sqrt[]{b^2-4ac} }{2a}$

$x=\frac{-(-16)\frac{+}{}\sqrt[]{(-16)^2-4(4)(-5)} }{2(4)}$

$x=\frac{16\frac{+}{}\sqrt[]{256+80} }{8}$

$x=\frac{16\frac{+}{}\sqrt[]{336} }{8}$

$x=\frac{16\frac{+}{}\sqrt[]{2^2*2^2*21} }{8}$

$x=\frac{16\frac{+}{}2*2\sqrt[]{21} }{8}$

$x=\frac{16\frac{+}{}4\sqrt[]{21} }{8}$

---------------------------------------------------------------------------

$x=\frac{16}{8}+\frac{4\sqrt[]{21}}{8}$

$x=2+\frac{1}{2}\sqrt[]{21}$

---------------------------------------------------------------------------

$x=\frac{16}{8}-\frac{4\sqrt[]{21}}{8}\\x=2-\frac{1}{2}\sqrt{{21}$

6 0

3 years ago

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