1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erma4kov [3.2K]
4 years ago
13

PLEASE HELP I was really sure that this would be 13 but it's not and I have no clue on what to do.​

Mathematics
2 answers:
snow_tiger [21]4 years ago
7 0

Answer: its 11

Step-by-step explanation:

DE is similar to BF and BF is half the line of BC so half of 22 is 11

trapecia [35]4 years ago
4 0

Answer:

11

Step-by-step explanation:

Another way you can think is as

\frac{AD}{AB}  =  \frac{AD}{2AD}  =  \frac{1}{2}

Given D & E are mid points of AB & AC

So, DE must be parallel to BC

By the property of similar triangles

ADE ~ ABC

\frac{DE}{BC}  =  \frac{1}{2}  \\  \frac{DE}{22}  =  \frac{1}{2 }  \\ DE =  \frac{22}{2}  = 11

Hope it helps too ;))

You might be interested in
Discontunuity of f(x) = x^2 plus 2x over x plus 2
Lina20 [59]

Answer:

When we have a function like:

f(x) = \frac{g(x)}{h(x)}

This function will have a discontinuity only if it diverges, and a divergence can happen when the denominator is equal to zero and the numerator is different than zero.

In this case, we have the equation:

f(x) = \frac{x^2 + 2*x}{x + 2}

Here the denominator is:

h(x) = x + 2

This is equal to zero when:

x + 2 = 0

x = -2

Now we need to see what happens with the numerator when x = -2

g(-2) = (-2)^2 + 2*(-2) = 0

Is equal to zero.

Then we need to see the limit when x -> -2, and use the L'Hopital theorem.

\lim_{x \to \ - 2} \frac{x^2 + 2*x}{x + 2}

Because we have zero over zero at that point, we need to look at the quotients of the derivatives of both numerator and denominator.

\lim_{x \to \ - 2} \frac{2*x+ 2}{ 2} = \frac{2*-2 + 2}{2} = -1

Then the function does not diverge, then the function has no discontinuity.

We also could look at the graph of f(x) to see it:

Our function is a linear function, and this is because the numerator is x times the denominator, then the function is:

f(x) = x.

8 0
3 years ago
6z+10=-2<br><br> pls answer' <br> i willmarke brainlest
Blizzard [7]

Answer:

Step-by-step explanation: 6z=-2-10

6z= -12

z=-12/6

then z= -2

5 0
3 years ago
Read 2 more answers
HELP with these questions
zlopas [31]

<u>Step-by-step explanation:</u>

transform the parent graph of f(x) = ln x        into f(x) = - ln (x - 4)  by shifting the parent graph 4 units to the right and reflecting over the x-axis

(???, 0): 0 = - ln (x - 4)

            \frac{0}{-1} = \frac{-ln (x - 4)}{-1}

            0 = ln (x - 4)

            e^{0} = e^{ln (x - 4)}

             1 = x - 4

          <u> +4 </u>  <u>    +4 </u>

             5 = x

(5, 0)

(???, 1): 1 = - ln (x - 4)

            \frac{0}{-1} = \frac{-ln (x - 4)}{-1}

            1 = ln (x - 4)

            e^{1} = e^{ln (x - 4)}

             e = x - 4

          <u> +4 </u>   <u>    +4 </u>

         e + 4 = x

          6.72 = x

(6.72, 1)

Domain: x - 4 > 0

                <u>  +4 </u>  <u>+4  </u>

               x       > 4

(4, ∞)

Vertical asymptotes: there are no vertical asymptotes for the parent function and the transformation did not alter that

No vertical asymptotes

*************************************************************************

transform the parent graph of f(x) = 3ˣ        into f(x) = - 3ˣ⁺⁵  by shifting the parent graph 5 units to the left and reflecting over the x-axis

Domain: there is no restriction on x so domain is all real number

(-∞, ∞)

Range: there is a horizontal asymptote for the parent graph of y = 0 with range of y > 0.  the transformation is a reflection over the x-axis so the horizontal asymptote is the same (y = 0) but the range changed to y < 0.

(-∞, 0)

Y-intercept is when x = 0:

f(x) = - 3ˣ⁺⁵

      = - 3⁰⁺⁵

      = - 3⁵

      = -243

Horizontal Asymptote: y = 0  <em>(explanation above)</em>

5 0
4 years ago
7/8 × c for c = 8 algebra
Aleonysh [2.5K]
You would do 7/8 x 8/1 which is 56/8 which simplifys to 7 so your answer would be 7

7 0
3 years ago
HELP!! WILL GIVE 100 POINTS
kvasek [131]

Answer:

2/3 is quotient.

Step-by-step explanation:

2/3÷4/5=(2×5)/(3×4)=10/12=5/6

3 0
3 years ago
Read 2 more answers
Other questions:
  • (x+m)(x+n) if m=5 and n=-7
    12·1 answer
  • What is the median of 3 3 4 5 5 5 6 6 6 7 8​
    5·2 answers
  • Need help with c and d please
    13·1 answer
  • Find the product.
    7·1 answer
  • .
    7·1 answer
  • 5(x - 1) = 2(x – 4) – 6​
    14·1 answer
  • Can one of you help me pls it's urgent
    13·2 answers
  • A recipe uses 5 cups of flour for every 2 cups of sugar. How many cups of sugar would be used for 1 cup of flour.
    12·1 answer
  • If it snows tomorrow, the probability is 0.5 that John will practice his guitar. If it does not snow tomorrow, there is only a 0
    7·1 answer
  • (3x4 + 2x3 − x2 + 2x − 14) ÷ (x + 2)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!