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jek_recluse [69]

3 years ago

10

PLEASE HELP ME THE QUESTION THAT BLUE ARE MY ANSWERS THE ONE THAT DONSET I NEED HELP BUT CAN YOU SEE IF THE ONES THAT HAVE BULE

ARE CORRECT PLEASE THANKS YOU :)

1 answer:

Nikitich [7]3 years ago

6 0

The Blue ones are correct.

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layla drew a quadrilateral with 4 right angles and 2 pairs of opposite sides that are parallel. name the quadrilateral she could

mixas84 [53]

Since you want 4 right angles, and 2 pairs of opposite sides, you're probably looking for a rectangle.

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3 years ago

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Help please I need 5 points total. i need 2 to left of vertex. i need vertex. i need 2 to right of vertex. Please, quickly, I am

zlopas [31]

We are given with a quadratic equation which represents a Parabola , we need to find the vertex of the parabola , But let's recall that , For any quadratic equation of the form ax² + bx + c = 0 , the vertex of the parabola is given by ;

${\quad \qquad \boxed{\bf{Vertex = \left(\dfrac{-b}{2a},\dfrac{-D}{4a}\right)}}}$

Where , D = b² - 4ac (Discriminant)

Now , On comparing the given equation with ax² + bx + c , we have

⇢⇢⇢ <em><u>a = 1 , b = - 10 , c = 2</u></em><em><u>7</u></em>

Now , Calculating D ;

${:\implies \quad \sf D=(-10)^{2}-4\times 1\times 27}$

${:\implies \quad \sf D=100-108}$

${:\implies \quad \bf \therefore \quad D=-8}$

Now , Calculating the vertex ;

${:\implies \quad \sf Vertex =\bigg\{\dfrac{-(-10)}{2\times 1},\dfrac{-(-8)}{4\times 1}\bigg\}}$

${:\implies \quad \sf Vertex = \left(\dfrac{10}{2},\dfrac{8}{2}\right)}$

${:\implies \quad \bf \therefore \quad Vertex = (5,2)}$

Hence , The vertex of the parabola is at (5,2)

Note :- As the Discriminant < 0 . So , the equation will have imaginary roots .

Refer to the attachment for the graph as well .

5 0

3 years ago

A truck with 36-in.-diameter wheels is traveling at 55 mi/h.

kkurt [141]

Answer:

The angular speed is 3,227 rad/min

Step-by-step explanation:

Remember that

1 mile=63,360 inches

step 1

Find the circumference of the wheels

The circumference is equal to

$C=\pi D$

we have

$D=36\ in$

substitute

$C=\pi (36)$

$C=36\pi\ in$

step 2

we know that

The speed of the wheel is 55 mi/h

<em><u>Convert to mi/min</u></em>

55 mi/h=55/60 mi/min

<u><em>Convert to in/min</em></u>

(55/60) mi/min=55*63,360/60 in/min= 58,080 in/min

we know that

The circumference of the wheel subtends a central angle of 2π radians

so

using proportion

Find out how much radians are 58,080 inches

$\frac{36\pi }{2\pi }=\frac{58,080}{x} \\\\x=2*58,080/36\\\\x=3,226.67 \ rad$

therefore

The angular speed is 3,227 rad/min

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3 years ago

Deb drew a scale drawing of a swimming pool. She used the scale 1 millimeter : 9 meters. The pool is 45 meters long in real life

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Answer:5 millimeters on the drawing

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Answer:

3/4 pound is 12 oz/5

Step-by-step explanation:

3/4 is the dividend 5 is the divisor

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