7(+5)=21<br>can you please help with math problem<br>

Which point lies on the line described by the equation below? y+ 4 = 4(x-3) O A. (3,-4) O B. (2,9) O C. (0,0) O D. (1,-11) E. (1

dangina [55]

The point (3, -4) lie on the line y + 4 = 4(x - 3) because the point (3,-4) satisfy the line option (A) is correct.

<h3>What is a straight line?</h3>

A straight line is a combination of endless points joined on both sides of the point.

The slope 'm' of any straight line is given by:

$\rm m =\dfrac{y_2-y_1}{x_2-x_1}$

We have an equation of a line:

y + 4 = 4(x - 3)

A (3,-4)

Plug the above points in the equation of the line.

-4 + 4 = 4(3 -3)

0 = 0 (true)

The point lies on the line

Similarly checking for others points we will find that points (2,9), (0,0) , (1,-11), (1,11), and (-2, 3) does not lie on the line y + 4 = 4(x - 3)

Thus, the point (3, -4) lie on the line y + 4 = 4(x - 3) because the point (3,-4) satisfy the line option (A) is correct.

Learn more about the straight line here:

brainly.com/question/3493733

#SPJ1

4 0

2 years ago

What is trigonometry and where is it used?

liq [111]

Answer:

Trigonometric functions are used in obtaining unknown angles and distances from known or measured angles in geometric figures. Trigonometry developed from a need to compute angles and distances in such fields as astronomy, mapmaking, surveying, and artillery range finding.

4 0

3 years ago

Yea someone explain/solve this...

xenn [34]

$\rule{50}{1}\large\blue\textsf{\textbf{\underline{Question:-}}}\rule{50}{1}$

<em>[refer to attachment for question ~]</em>

<em />

<em /> $\rule{50}{1}\large\textsf{\textbf{\underline{Answer and how to solve:-}}}\rule{50}{1}$

First of all, We need to multiply by the denominator (10) on both sides:-

$\longmapsto\sf{\displaystyle\frac{-x+8}{10} \times10=-7\times10}$

On the left-hand side, the 10s cancel as follows:-

$\longmapsto\sf{-x+8=-7\times10}$

On the right-hand side, we multiply -7 times 10:-

$\longmapsto\sf{-x+8=-70}$

Subtract 8 on both sides:-

$\longmapsto\sf{-x=-70-8}$

We get

$\longmapsto\sf{-x=-78}$

And finally, Divide by -1 on both sides:-

$\longmapsto\sf{x=78}$

<h3>Good luck with your studies.</h3>

$\rule{300}{1}$

6 0

3 years ago

Read 2 more answers

Two trucks leave a warehouse at the same time. One travels due west at an average speed of 49 miles per hour, and the other trav

Brilliant_brown [7]

Answer:

7.5 hours

Way Number One:

<em>This way uses critical thinking</em>

These two trucks are traveling in opposite directions (West and East). One truck moves 49 miles every hour, and the other moves 63 miles per hour. Since they are traveling in opposite directions, we do not have to worry about angles or use a distance formula.

Every hour one truck moves 49 and the other 63. So, if we add 49 to 63 we will get their distance apart after one hour.

-> 49 + 63 = 112 miles

Now, we want to know how long it will take for them to be 840 miles apart. We can divide 840 by 112 to see how many hours it will take, because every hour the trucks become 112 miles farther apart.

-> 840 / 112 = 7.5 hours

Way Number Two:

<em>This way uses a graphing calculator</em>

We can turn the distance traveled by each truck into equations. Let y be miles traveled and x be time spent.

First truck, y = 49x

Second truck, y = 63x

We know their distance apart will be the miles traveld added together, so y = 63x + 49x. Our answer will be x when y is equal to 840. After graphing, we get the point of (840, 7.5)

-> See attached

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

4 0

3 years ago

The garden bed has a width of 1.5 meters and an area of 6 square meters . Which Equation and Solution correctly represent x , th

TiliK225 [7]

Huhhuhijik Kevin Jong uno

7 0

4 years ago

7(+5)=21can you please help with math problem​

7(+5)=21can you please help with math problem