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3 years ago

Can someone help me on this?

Mathematics

1 answer:

Anit [1.1K]3 years ago

7 0

Answer:

C when multiplying negative numbers if you multiply a negative by a negative you get a positive.

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Determine whether the following lines represented by the vector equations below intersect, are parallel, are skew, or are identi

KiRa [710]

Answer:

r(t) and s(t) are parallel.

Step-by-step explanation:

Given that :

the lines represented by the vector equations are:

r(t)=⟨1−t,3+2t,−3t⟩

s(t)=⟨2t,−3−4t,3+6t⟩

The objective is to determine if the following lines represented by the vector equations below intersect, are parallel, are skew, or are identical.

NOTE:

Two lines will be parallel if $\dfrac{x_1}{x_2}= \dfrac{y_1}{y_2}= \dfrac{z_1}{z_2}$

here;

$d_1 = (-1, \ 2, \ -3)$

Thus;

$r(t) = \dfrac{x-1}{-1} = \dfrac{y-3}{2}=\dfrac{z-0}{-3} = t$

$d_2 =(2, \ -4, \ +6)$

$s(t) = \dfrac{x-0}{2} = \dfrac{y+5}{-4}=\dfrac{z-3}{6} = t$

∴

$\dfrac{d_1}{d_2}= \dfrac{-1}{2} = \dfrac{2}{-4}= \dfrac{-3}{-6}$

Hence, we can conclude that r(t) and s(t) are parallel.

6 0

3 years ago

These map tests give me anxiety or however you spell it

Vesnalui [34]

Answer:

Im sorry i dont know what im supposed to be answering

step-by-step explanation:

5 0

3 years ago

Is 27 prime or composite?

marysya [2.9K]

Answer: It is not prime , therefor it's composite.

Step-by-step explanation:

Because....

The number 27 can be evenly divided by 1, 3, 9 and 27, with no remainder.

* Hopefully this helps:) Mark me the brainliest:)!!!

3 0

3 years ago

Read 2 more answers

Please help asap!<br><br> Use the difference quotient to find the derivative of f(x)= 4/x at x=3.

saveliy_v [14]

F (x)= 4/x

F(3)= 4/3

4/3 I think

4 0

3 years ago

Read 2 more answers

Mr. Claussen needs a total of 15 pounds of ground beef to make hamburgers for a company picnic. He finds that 2 pounds of ground

Marat540 [252]

Answer: $33.00

Step-by-step explanation:

Given

Mr. Claussen needs 15 Pounds of ground beef

It is stated that 2 pounds of beef cost $4.40

Using unitary method

1 Pound cost $\frac{4.4}{2}=\$2.2$

For 15 pounds it is

$\Rightarrow 15\times 2.2=\$33$

Thus, he has to spend $33 for 15 pound meat

6 0

3 years ago