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3 years ago

What is the value of x? Show me how you got your answer.

Mathematics

1 answer:

artcher [175]3 years ago

7 0

Answer:

x = 30

since 3x = 90 degrees, then x = 90/3 = 30

Step-by-step explanation:

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to solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second

Marizza181 [45]

Answer:

The resulting equation is

x^2/4+16x^2/9=1

Step-by-step explanation:

The given equations are:

3y=12x eq(1)

x^2/4+y^2/9=1 eq(2)

We need to isolate variable y in equation 1

Divide both sides of the equation with 3

3y/3 = 12x/3

y = 4x

Now, substitute the value of y=4x in second equation

x^2/4+y^2/9=1

x^2/4 + (4x)^2/9 = 1

The resulting equation is

x^2/4+16x^2/9=1

8 0

4 years ago

Read 2 more answers

An isosceles triangle has an angle that measures 38degrees. What measures are possible for the other two angles? Choose all that

Sphinxa [80]

Answer:

71° and 71°.

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Step-by-step explanation:

The triangle having two sides equal along with one different side is called an isosceles triangle.

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So, Let us assume the other sides (two equal sides) of the isosceles triangle as x. As the different side is already given in the question.

⠀

We know that,

The sum of all angles of a triangle is 180°

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So, According to the question :

⠀

${\longrightarrow \it\qquad { \ { { 38 \: }^{ \circ} + x + x = 180{}^{ \circ} }}}$

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${\longrightarrow \it\qquad { \ { { 38 \: }^{ \circ} + 2x = 180{}^{ \circ} }}}$

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${\longrightarrow \it\qquad { \ { 2x = 180{}^{ \circ} - { 38 \: }^{ \circ}}}}$

⠀

${\longrightarrow \it\qquad { \ { 2x = 142{}^{ \circ} }}}$

⠀

${\longrightarrow \it\qquad { \ { x = \dfrac{142{}^{ \circ}}{2} }}}$

⠀

${\longrightarrow \it\qquad { \pmb { x = 71^{ \circ} }}}$

⠀

Therefore,

The measure of the two other angles of the isosceles triangle are 71° and 71°.

3 0

2 years ago

What is the area, in square feet, of the shaded region? Remember A(Circle) = πr²

Inga [223]

I know a=pi*r^2 anyways, the triangle is:4*8/2=16 The semicircle is: 4pi because 4 is diameter, /2 then square u still get 4. 4*3.14 = 12.56 12.56 + 16 = 28.56.

4 0

4 years ago

PICTURE^^ PLZ HELP !!!

densk [106]

QUESTION A

The solutions to the system of equations are the point of intersection of the quadratic graph and the straight line.

The two curves intersected at two points. Hence there are two real solutions.

The solutions are (-3,-1) and (-6,5).

QUESTION B.

The straight line is a tangent to the quadratic graph.

This means that the straight line intersected the quadratic graph at only one point.

The system has only one real solution.

The solution is (4,3).

QUESTION C

The quadratic graph and the straight line intersected at two distinct points.

The system has two real solutions.

The solutions are (0,3) and (6,-3).

QUESTION D

The two graphs are hanging apart.

There is no point of intersection.

The system has no real solutions.

QUESTION E

The straight line and the quadratic curve intersected at two distinct points.

The system has two real solutions.

The solutions are (0,0) and (1,1).

QUESTION F

The two curves intersected at only one point.

There is only one real solution to the system.

The solution is (-1,5).

3 0

3 years ago

Anyone wana be my friend if you do lets zoom and get stuff doneh

GalinKa [24]

Answer:

Step-by-step explanation:

7 0

3 years ago

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