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2 years ago

Please help!! Thank you so much

Mathematics

1 answer:

stiv31 [10]2 years ago

5 0

Answer:

I think answer is

b. (2,1)

:-)

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Please help with the math problem shown in the image

lbvjy [14]

The answer is b . this is because I am the best at this

3 0

3 years ago

Read 2 more answers

David drove 580 km on 7 hour journey. on the city roads he drove 60km/h and on the he drove 100km/h. How long did he drive at ea

serious [3.7K]

Answer:

3 hours on the city roads and 4 hours on the other roads

Step-by-step explanation:

580 (total miles driven) - 400 (4 hours of driving 100km/h) = 180 (miles left)

180 (miles left to drive) / 60 (km/h) = 3 (hours driven at the speed of 60km/h)

I hope this helps :)

5 0

3 years ago

Find the general solution of <img src="https://tex.z-dn.net/?f=2cos%282x%20%2B%20%5Cfrac%7B%5Cpi%20%7D%7B4%7D%20%29%20%3D%20%5Cs

Aleks04 [339]

Answer:

$\large\boxed{x=-\dfrac{\pi}{4}+k\pi\ \text{or}\ x=k\pi\ \text{for}\ k\in\mathbb{Z}}$

Step-by-step explanation:

$2\cos\left(2x+\dfrac{\pi}{4}\right)=\sqrt2\qquad\text{divide both sides by 2}\\\\\cos\left(2x+\dfrac{\pi}{4}\right)=\dfrac{\sqrt2}{2}\to2x+\dfrac{\pi}{4}=\pm\dfrac{\pi}{4}+2k\pi\\\\2x+\dfrac{\pi}{4}=-\dfrac{\pi}{4}+2k\pi\ \vee\ 2x+\dfrac{\pi}{4}=\dfrac{\pi}{4}+2k\pi\qquad\text{subtract}\ \dfrac{\pi}{4}\ \text{from all sides}\\\\2x=-\dfrac{2\pi}{4}+2k\pi\ \vee\ 2x=2k\pi\qquad\text{divide all sides by 2}\\\\x=-\dfrac{\pi}{4}+k\pi\ \vee\ x=k\pi\ \text{for}\ k\in\mathbb{Z}$

5 0

3 years ago

What is anwer this qestion and simplife it 8+6²\11 +7×2

Zigmanuir [339]

Answer:

My answer was 18.

Step-by-step explanation:

Step 1:

8+6 times 6 is 44.

Step 2:

Divide 44 by 11 and got 4.

Step 3:

Always multiplication goes first so...

7 times 2 equal 14

Step 4:

14 plus 4

Step 5:

Answer:

18.

4 0

2 years ago

A number that can be written as a fraction?

WITCHER [35]

Answer:

Rational Numbers

Step-by-step explanation:

7 0

2 years ago