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3 years ago

Does anyone know how to do this?

Mathematics

2 answers:

nekit [7.7K]3 years ago

7 0

That look hard what subject is it

Mama L [17]3 years ago

3 0

First, since the second equation equals x. you just substitute that equation for the x value in the first equation. then you distribute and it will give you what y equals. then, put that y value into the second equation and you will get x

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What is the product of (–1.5)(0.8)? –1.2 –0.7 0.7 1.2

guajiro [1.7K]

The Answer is a. –1.2

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2 years ago

What is the value of X ?

umka21 [38]

Answer:

15 because its 15j hvyb

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3 years ago

Whats the equation of the line that passes threw -4,4 and is parrell to the line y=1/2-4

vovangra [49]

Answer:

$y=\frac{1}{2}x+6$

Step-by-step explanation:

Given:

The equation of the known line is:

$y=\frac{1}{2}x-4$

A point on the unknown line is (-4, 4)

Now, since the two lines are parallel, their slopes must be equal.

Now, slope of the known line is the coefficient of 'x' which is $\frac{1}{2}$ .

Therefore, the slope of the unknown line is also $m=\frac{1}{2}$

Now, for a line with slope 'm' and a point on it $(x_1,y_1)$ is given as:

$y-y_1=m(x-x_1)$

Here, $m=\frac{1}{2}, x_1=-4,y_1=4$ . Therefore,

$y-4=\frac{1}{2}(x-(-4))\\\\y-4=\frac{1}{2}(x+4)\\\\y-4=\frac{1}{2}x+2\\\\y=\frac{1}{2}x+2+4\\\\y=\frac{1}{2}x+6$

Hence, the equation of the unknown line is $y=\frac{1}{2}x+6$ .

5 0

3 years ago

4(x-3)=2(3x+1) 2 solve for x

Katarina [22]

Hi there!

Th' Eqn. is :-

4 (x - 3) = 2 (3x + 1)

=> 4x - 12 = 2 (3x + 1)

=> 4x - 12 = 6x + 2

Combine th' like terms :-

=> 4x - 6x = 2 + 12

=> - 2x = 14

=> x = $\dfrac {- 14}{2}$

=> x = - 7

Hence, The required answer is : x = - 7

~ Hope it helps!

3 0

3 years ago

Help me solve this please i can’t figure it out :/

musickatia [10]

Answer:

x = 12.5

Step-by-step explanation:

By Pythagoras'

16² = 10² + x²

x² = 16² - 10²

x = √(16² - 10²)

x = 12.489...

x = 12.5 (nearest tenth)

5 0

3 years ago