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3 years ago

I need help please!!! thank you

Mathematics

1 answer:

emmainna [20.7K]3 years ago

3 0

Answer: I believe it is 2/3

Step-by-step explanation: count from point -4,-4 over 2 (to the right) up 3

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David and Mark win some money and share it in the ratio 2:1. David gets £18. How much did Mark get?

Sati [7]

Answer:

Step-by-step explanation:

David got 2x the amount that Mark got, so divide 18 by 2

3 0

3 years ago

Solve for v.-6(-4v+1)-v=7(v-3)-3 Simplify your answer as much as possible!

spin [16.1K]

We want to solve the equation

$\text{ -6\lparen -4v+1\rparen -v=7\lparen v -3\rparen -3}$

we start by distributing on both sides the multiplication. So we get

$(\text{ -6\rparen\lparen -4\rparen v - 6 - v =}7v\text{ - 3}\cdot7\text{ -3}$

if we operate, we get

$24v\text{ -6 -v=7v - 21 -3}$

if we operate on both sides, we get

$23v\text{ -6=7v - 24}$

we start by subtracting 7v on both sides, so we get

$\begin{gathered} 23v\text{ -6 - 7v= -24} \\ 16v\text{ -6= -24} \end{gathered}$

now, we add 6 on both sides. So we get

$16v=\text{ -}24+6=\text{ -18}$

so if we divide both sides by 16 we get

$v=\text{ - }\frac{18}{16}=\text{ -}\frac{9\cdot2}{8\cdot2}=\text{ -}\frac{9}{8}$

so the value of v is -9/8

7 0

1 year ago

Compare the line passing through the points (-2, 9) and (4, 6) to the line given by the equation y= 2/5 x -4.

Licemer1 [7]

Answer:

No relation ( see bottom for detail )

I'm not sure if you want this explanation, but here you go.

Step-by-step explanation:

If you want to find out if the points are on this line, substitute in the values.

y = 2/5x - 4 y = 2/5x - 4

6 = 2/5 ( 4 ) - 4 9 = 2/5 ( -2 ) - 4

6 = 8/5 -4 9 = -4/5 - 4

6 = 8/5 - 20/5 9 = -4/5 - 20/5

6 ≠ -12/5 9 ≠ -24/5

After substituting in the values, I've come to the conclusion that these points don't pass through this line.

Solving to find if they are perpendicular, I use the rise/run equation-

y_2 - y_1 over x_2 - x_1

y_2 and x_2 is the second set of points, which then can help determine the slope of two points.

4 - ( negative 2 ) ( this is also equal to adding a positive 2 )

-3 / 6

= -1/2 is the slope of these two points

Comparing the slopes given, I can conclude that the equation and these two points have no relation.

4 0

3 years ago

Help please I still can’t understand it

Verizon [17]

2.74c2+4.19c+6.13 hope it helps

8 0

3 years ago

Read 2 more answers

Help please, 90-60-30

quester [9]

Answer:

v = $\sqrt{2}$ /2

u = $\sqrt{6}$ /2

Step-by-step explanation:

$\sqrt{2}$ is across from the 60 degree angle so the side across from 30 degrees is half that

the hypotenuse is the product of the side opposite 30 degrees and $\sqrt{3}$

so:

$\sqrt{3}$ × $\sqrt{2}$ /2 = $\sqrt{6}$ /2

8 0

2 years ago