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3 years ago

Which graph shows the point (-4, 0)? A. B. C. D.

Mathematics

1 answer:

galina1969 [7]3 years ago

5 0

Answer:

hey. pls post the graphs with the question so we may help you. you can add the pictures as an attachment.

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Someone solve this for me please: Find a vector v such that || v || = 10 and v is in same direction as 2i + 3j

drek231 [11]

Answer:

Step-by-step explanation:

$\overrightarrow{a}=2*\overrightarrow{i}+3*\overrightarrow{j}\\\\||\overrightarrow{a}||=\sqrt{2^2+3^2} =\sqrt{13} \\\\\boxed{\overrightarrow{v}=\dfrac{20}{\sqrt{13}}*\overrightarrow{i}+\dfrac{30}{\sqrt{13}}*\overrightarrow{j}} \\\\\\||\overrightarrow{a}||=\sqrt{(\dfrac{20}{\sqrt{13}})^2+(\dfrac{30}{\sqrt{13}})^2} =\sqrt{\dfrac{400+900}{13} }==\sqrt{\dfrac{1300}{13} }=\sqrt{100}=10 \\$

8 0

2 years ago

Solve for n<br><br>n-3n=14-4n

Elodia [21]

-2n+4n=14

2n=14

n=7

Check answer

7-3(7)= 14-4(7)

7-21= 14-28

-14=-14

n= 7

7 0

3 years ago

A region R in the first quadrant of the xy-plane is bounded by the curves y = x², y = 2 - x and the x-axis. Find the value of th

lions [1.4K]

The two curves meet in the first quadrant when

$x^2 = 2-x \implies x^2 + x - 2 = (x + 2) (x - 1) = 0 \implies x=1$

Then the integral in question is

$\displaystyle \iint_R x \, dA = \int_0^1 \int_{x^2}^{2-x} x \, dy \, dx \\\\ ~~~~~~~~ = \int_0^1 x (2-x-x^2) \, dx \\\\ ~~~~~~~~ = \int_0^1 (2x - x^2 - x^3) \, dx = 1 - \frac13 - \frac14 = \boxed{\frac5{12}}$

3 0

2 years ago

Let w be the set of all points in r3 that lie in the xz-plane. is w a subspace of r3?

hichkok12 [17]

<span>It might be helpful to remember that the definitions of R2 and R3 are not geometric at all. R2 is the set of all ordered pairs of real numbers, whereas R3 is the set of all ordered triples of real numbers. W is a subspace fo R3, and so it still consists of elements which are triples, not pairs. The fact that R2 and W can be visualized with the same geometric picture, namely the xy plane, is one way to see in a concrete way the isomorphism which the second poster refered to.</span>

7 0

3 years ago

What expression is equivalent to (f+g)(4)

Murljashka [212]

Answer:

Step-by-step explanation:

2+2=4 that give you your answer

8 0

3 years ago