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3 years ago

I really need help with solving x please

Mathematics

1 answer:

Luba_88 [7]3 years ago

5 0

From the fact that the shape is a square, we know that one of the angles of the triangle in question must by 90 degrees (the lower left angle in this case).

The triangle formed is also an isosceles triangle and therefore the two smaller angles must be equal to each other. (upper left and lower right)

On top of this, we also know that the total of the angles must be 180 due to the fact that all triangles have interior angles that add to 180.

90 + (lower right) + (upper left) = 180

Since lower right and upper left are equal, we can use a single variable to represent them both.

90 + a + a = 180
90 + 2a = 180
2a = 90
a = 45
So, the degree of the lower right angle is 45. We can take this value and set 4x + 17 equal to it.

4x + 17 = 45
4x = 28
x = 7

Therefore, x is equal to 7.

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Will Mark Brainlest. (find the domain of following relation for the given range) step by step

mr_godi [17]

Step-by-step explanation:

I suppose you mean find the range for the following domain. Because when

g(x) is given the value of X

we are trying to solve the output value which is range.

If you want to solve for the domain, the question should give

g(x) = y

and provide the value of y.

X³+X²-X-2

Substitute

X=(-1)

-1+1-(-1)-2

= -1

g(-1)= -1

Substitute

X=(2)

8+4-2-2

g(2)= 8

Substitute

X=(1)

1+1-1-2

=-1

g(1)= -1

g(2)+g(1)

=8-1

5 0

2 years ago

I NEED HELP ASAP

Maru [420]

Answer:

1x + 4y = 4 ⇒ 6x + 24y = 24

6x - 8y = 0 ⇒ 6x - 8y = 0

32y = 24

32 32

y = 3/4

x + 4(3/4) = 4

x + 3 = 4

-3 -3

x = 1

(x, y) = (1, 3/4)

Step-by-step explanation:

up there :D

4 0

1 year ago

I need help!! F(4) I f f(x)=3x-1

Amanda [17]

Answer:

f(4) =11

Step-by-step explanation:

f(x)=3x-1

Let x = 4

f(4)=3*4-1

= 12-1

= 11

6 0

3 years ago

What is the exact value of BC? A. 3.16 B. 5\|2 C. 7.07 D. 25

Natalija [7]

Answer:

$C. \: \: 7.07$

Step-by-step explanation:

Coordinates of B are

$(5,5)$

Coordinates of C are

$(4, - 2)$

Distance between two points

$\sqrt{({x_2 - x _1 {)}^{2} + (y_2 - y_1 {)}^{2} }}$

Distance of BC

$\sqrt{(4 - 5) {}^{2} + ( - 2 - 5 {)}^{2} }$

$\sqrt{ { (- 1}^{2}) + ({ - 7}^{2}) }$

$\sqrt{1 +49 }$

$\sqrt{50}$

$7.07$

3 0

2 years ago

Line A is represented by the following equation: x + y = 2

Orlov [11]

Answer:

$ax+ay=k; a\ne0, k\ne2a$ ; line D in the options.

Step-by-step explanation:

The set of equations has no solutions if the two lines are parallel. A quick way to create a parallel line is to solve for y, put it in slope-intercept form. Else, as long as the cofficient of x and y are in the same ratio (in this case 1:1), the two lines are parallel, you just have to be careful not to pick the same line again!

The condition $a\ne 0$ makes sure you are still getting lines (else you would get rid of both x and y); the condition $k\ne 2a$ makes sure you're not picking line A again, just written in a different form.

Now that we have the options:

A and C have a different ratio for the coefficient of x and y (2:1 and 1:2) so are not good.

Choice B is just a more complicated way to write the same line, you can see by dividing both sides by 2 and get back x+y=2.

Line D is correct.

3 0

2 years ago