All categories

3 years ago

Please give me the correct answer.

Mathematics

2 answers:

Ray Of Light [21]3 years ago

5 0

Answer:

You subtract 40 which will equal -6 and now you divide -6/4n and the answer is n=-1.5

Step-by-step explanation:

andre [41]3 years ago

4 0

Answer:

subtract 40 from both sides

You might be interested in

Write as a mixed number.<br> 25/8

levacccp [35]

Answer:

3 1/8

Step-by-step explanation:

7 0

3 years ago

What is the ration of 8 lions and 4 tigers

NeX [460]

Answer:

the ration is 2:1 when simplified

8 0

3 years ago

Is a soup bowl a gallon quart pint or cup

Ad libitum [116K]

Answer:

their are different sizes of soup bowls

5 0

3 years ago

Can someone help me with this? 8th grade math

tatyana61 [14]

Answer:

ooohh yeah i kinda suck at geometry lol nearly failed sophomore year last year haha

Step-by-step explanation:

6 0

3 years ago

Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) Find cos theta, where theta is the angle in degrees between u and w.

vodka [1.7K]

Answer: The value of cos theta is -0.352.

Step-by-step explanation:

Since we have given that

$\vec{u}=1\hat{i}+2\hat{j}-2\hat{k}\and\\\\\vec{w}=\hat{j}+4\hat{k}$

We need to find the cos theta between u and w.

As we know the formula for angle between two vectors.

$\cos\ \theta=\dfrac{\vec{u}.\vec{w}}{\mid u\mid \mid w\mid}$

So, it becomes,

$\cos \theta=\dfrac{2-8}{\sqrt{1^2+2^2+(-2)^2}\sqrt{1^2+4^2}}\\\\\cos \theta=\dfrac{-6}{\sqrt{17}\sqrt{17}}=\dfrac{-6}{17}=-0.352\\\\\theta=\cos^{-1}(\dfrac{-6}{17})=110.66^\circ$

Hence, the value of cos theta is -0.352.

8 0

3 years ago

Please give me the correct answer.​

Please give me the correct answer.