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Andrej [43]
3 years ago
9

Lydia writes the equation below with the missing value. She puts in a value in the box and says that equation represent a direct

variation. Which explains whether the equation could represent a direct variation
Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
8 0

Answer:

A

Step-by-step explanation:

If she puts 0 in the box she would have a direct variation.

serious [3.7K]3 years ago
6 0

Answer: she put 0 In The box she would have a direct variation

Step-by-step explanation:

Y=5x-0

Lydia has zeroed, this expression means that it is a direct variation

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Form the quadratic equation whose one root is 2 + 2^(1/2)​
Oksanka [162]

9514 1404 393

Answer:

  x^2 -4x +2 = 0

Step-by-step explanation:

The other root is the conjugate of the given one, so is 2-√2. The quadratic equation in factored form is then ...

  (x -2-√2)(x -2+√2) = 0

Expanding this, we get ...

  (x -2)^2 -(√2)^2 = 0

  x^2 -4x +4 -2 = 0

  x^2 -4x +2 = 0 . . . . the equation you're looking for

4 0
3 years ago
PLEASE HELP THIS IS A TIMED QUESTION ON A QUIZ!!!
pantera1 [17]

Answer:

  • a)  11, d) 25, e) 14, b) 25, c) 28, f) 33

Step-by-step explanation:

<h3>Given</h3>
  • ΔBDF, with H is the centroid of BDF, DF = 50, CF = 42, and BH = 22
<h3>To find</h3>
  • HE , DE , CH, EF,  HF, BE
<h3>Solution</h3>

As per definition of the centroid, the points C, E and G are midpoints of respective sides and the length of short and long distances from the centroid have ratio of 1/3 and 2/3 of median

  • a) HE =  1/2BH = 1/2(22) = 11
  • d) DE =  1/2DF = 1/2(50) = 25
  • e) CH =  1/3CF = 1/3(42) = 14
  • b) EF =  DE = 25
  • c) HF =  2/3CF = 2/3(42) = 28
  • f) BE =BH + HE = 22 + 11 = 33
3 0
3 years ago
Evaluate Expression<br> -19 + 3(-13 + 4*3)
jarptica [38.1K]

Answer:

-22

Step-by-step explanation:

Solve the expression using PEMDAS.

-19 + 3(-13 + 4 * 3)

~Multiply

-19 + 3(-13 + 12)

~Add

-19 + 3(-1)

~Multiply

-19 - 3

~Subtract

-22

Best of Luck!

3 0
2 years ago
A show owner offers a 20% discount off the regular price of a mirror. The amount of the discount is $3 what is the regular price
hram777 [196]

Answer:

$15

Step-by-step explanation:

The original price of the mirror is unknown, so let's call it x.

The discount on the original price is a 20% discount, so it is 20% of x, or 0.2x.

We are told the discount is $3, so 0.2x = 3. Now we solve the equation for x.

0.2x = 3

Divide both sides by 0.2.

x = 3/0.2

x = 15

The regular price is $15.

5 0
3 years ago
The circle below has center k , and its radius is 3 cm Given that m∠LKM =70° , find the length of the major arcLNM
Veseljchak [2.6K]

The length of the major arc LNM is \frac{29}{6}\pi \ cm

<h3><u>Length of an arc</u></h3>

From the question,

We are to determine the value of the length of the major arc LNM

The length of the major arc LNM can be calculated using the formula

Length \ of \ major\ arc \ LNM = \frac{Reflex \

Where r is the radius

First, we will determine the value of the reflex ∠LKM

Reflex ∠LKM + ∠LKM = 360° (<em>Sum of angles at a point</em>)

From the given information,

∠LKM = 70°

Then,

Reflex ∠LKM + 70° = 360°

Reflex ∠LKM = 360° - 70°

Reflex ∠LKM = 290°

Also, from the question

r = 3 cm

Now, putting the parameters into the formula, we get

Length \ of \ major\ arc \ LNM = \frac{290 ^\circ }{360 ^\circ} \times 2\pi \times 3

Then,

Length \ of \ major\ arc \ LNM = \frac{1740\pi}{360}

Length \ of \ major\ arc \ LNM = \frac{29}{6} \pi \ cm

Hence, the length of the major arc LNM is \frac{29}{6}\pi \ cm

Learn more on calculating length of an arc here: brainly.com/question/2005046

5 0
2 years ago
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