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3 years ago

LOOK AT THE SCREENSHOT PLS HELP!!!

Mathematics

1 answer:

Svetllana [295]3 years ago

6 0

Answer:

x = 1.63 units

Step-by-step explanation:

For 30 degree angle,

Hypotenuse = x

Base = $\sqrt2$

We know that,

$\cos\theta=\dfrac{B}{H}$

B is base and H is the hypotenuse

So,

$\cos(30)=\dfrac{\sqrt2}{x}\\\\x=\dfrac{\sqrt2}{\cos(30)}\\\\x=1.63$

So, the value of x is equal to 1.63 units.

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Tell whether x and y are in a proportional relationship. Explain your reasoning.

notsponge [240]

No because they 90 to 200 is 110 but 200 to 325 is 125

110 obviously does not equal 125

8 0

3 years ago

Sebastian solved the radical equation y + 1 = but did not check his solution. (y + 1)2 = y2 + 2y + 1 = –2y – 3 y2 + 4y + 4 = 0 (

Softa [21]

Answer:

There are no true solutions to the equation.

Step-by-step explanation:

The correct equation is

$y+1=\sqrt{-2y-3}$

Solve for y

squared both sides

$(y+1)^2=(-2y-3)$

$(y^2+2y+1)=(-2y-3)$

$y^2+2y+1+2y+3=0$

$y^2+4y+4=0$

$(y+2)(y+2)=0$

$y=-2$

Verify

substitute the value of y in the original expression

$-2+1=\sqrt{-2(-2)-3}$

$-1=1$ ----> is not true

therefore

There are no true solutions to the equation.

4 0

3 years ago

Ryan has $3$ red lava lamps and $3$ blue lava lamps. He arranges them in a row on a shelf randomly, then turns $3$ random lamps

hjlf

There are 6! = 720 ways of arranging the lamps.

If the leftmost lamp is red, there are 3 choices of lamp in the leftmost position, and the remaining 5 can be placed in any order, so there are 3×5! = 360 ways of arranging the lamps and the leftmost is red.

Hence there is a 360/720 = 1/2 probability that the leftmost lamp is red.

Ignoring lamp color for the moment, the probability of arranging 3 lit lamps and 3 unlit lamps is the same, 1/2.

Since Ryan arranges the lamps randomly by color, then turns 3 of them on randomly, the two events are independent. So

P(leftmost red AND leftmost lit) = P(red) × P(lit) = 1/2² = 1/4

7 0

2 years ago

Express the missing divisor using a power of 10. Explain your reasoning using a place value model. 5.2 ÷ ___ = 0.052 *

Colt1911 [192]

Answer:

the answer is 100

Step-by-step explanation:

bc it is moved over 2 places to the left, plz can i be brainliest

3 0

3 years ago

Read 2 more answers

Factorise 12 raised 2 minus 7x + 1

professor190 [17]

Answer:

(4x - 1)(3x - 1).

Step-by-step explanation:

I think you mean 12x^2 - 7x + 1

= 12x^2 - 4x - 3x + 1

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

= (4x - 1)(3x - 1).

6 0

3 years ago