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
algol [13]
1 year ago
8

If DF=78, DE=5x-9, and EF=2x+10, find DE.

Mathematics
1 answer:
Kazeer [188]1 year ago
3 0

Given that E is a point between Point D and F, the numerical value of segment DE is 46.

<h3>What is the numerical value of DE?</h3>

Given the data in the question;

  • E is a point between point D and F.
  • Segment DF = 78
  • Segment DE = 5x - 9
  • Segment EF = 2x + 10
  • Numerical value of DE = ?

Since E is a point between point D and F.

Segment DF = Segment DE + Segment EF

78 = 5x - 9 + 2x + 10

78 = 7x + 1

7x = 78 - 1

7x = 77

x = 77/7

x = 11

Hence,

Segment DE = 5x - 9

Segment DE = 5(11) - 9

Segment DE = 55 - 9

Segment DE = 46

Given that E is a point between Point D and F, the numerical value of segment DE is 46.

Learn more about equations here: brainly.com/question/14686792

#SPJ1

You might be interested in
Which graph represents x - 1 ≤ 3
MAVERICK [17]
The first graph. 

The  equation is x - 1 \leq 3
In order to solve it, you need to get x by itself.
Add 1 to both sides.  3+1=4
x \leq 4

Since this is your sign \leq the arrow has to point towards the left, and the circle needs to be colored in.
3 0
3 years ago
Find the center and radius for the circle defined by the equation: x2+y2+1/2x-2y-5=0.
iren2701 [21]

Answer:

(x + [1/4])2 + (y - 1)2 = (97/16)

Step-by-step explanation:

(x + [1/4])2 + (y - 1)2 = (97/16)

6 0
2 years ago
Hellppp <br> plsssssssssss
irina1246 [14]
The answer is 4 and 9, this is because 2*2=4 and 3*3=9, so their square roots are 2 and 3
3 0
2 years ago
The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a stand
erastovalidia [21]

Answer:

z=0.524

And if we solve for a we got

a=5 +0.524*2=6.048 \approx 6.05 min

Step-by-step explanation:

Let X the random variable that represent the lenght time it takes to find a parking space at 9AM of a population, and for this case we know the distribution for X is given by:

X \sim N(5,2)  

Where \mu=5 and \sigma=2

For this part we want to find a value a, such that we satisfy this condition:

P(X>a)=0.3   (a)

P(X   (b)

As we can see on the figure attached the z value that satisfy the condition with 0.7 of the area on the left and 0.3 of the area on the right it's z=0.524

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=0.524

And if we solve for a we got

a=5 +0.524*2=6.048 \approx 6.05 min

3 0
3 years ago
Simplify the function f(x)= 1/2 (27) 2x/3. Then determine the key aspects of the function
jeyben [28]
The given expression is:

f(x)= \frac{1}{2}(27)^{ \frac{2x}{3} } \\  \\ &#10;f(x)= \frac{1}{2}((27)^{ \frac{2}{3} })^{x}      \\  \\ &#10;f(x)=  \frac{1}{2}(9)^{x}

From the above equation, we can answer all the 4 questions.

a) Initial value occurs when x = 0

So,

f(0)= \frac{1}{2}(9)^{0}= \frac{1}{2}

So, the Initial value of the function is 1/2.

b) Simplified Base:
The base of an exponential function is the term which contains the exponent.
From the simplified equation, we can see that the base has been simplified and is equal to 9.

So, the simplified base is 9

c) Domain:
From the equation we can see that there is no such value which makes the function undefined. So all reall numbers are included in the Domain.

So, Domain is Set of All real numbers. 
In Interval notation this can be expressed as: (-∞,∞)

d) Range:
Range is the set of all y values that a function can take. Since the graph is not shifted vertically up or down, the range will be the set of all real numbers greater than zero.

So, Range is equal to All real numbers greater than 0.
In Interval notation, this can be expressed as (0,∞)
4 0
2 years ago
Read 2 more answers
Other questions:
  • A snail travels 3/8 feet in 1/2 hour.
    14·1 answer
  • Answers to these systems of two equations<br><br> 4x+2y=10<br> x-y=13
    10·2 answers
  • Find the mean:<br>31, 1, 12, 2, 21, 22, 1, 0, 31, 13
    15·1 answer
  • A pencil costs $0.45, an eraser costs $0.30, and a pencil sharpener costs $0.30. What is the cost of 3 pencils, 2 erasers, and 1
    12·1 answer
  • 2:5=_:10=_:15=_:20=_:25= 12:_
    8·1 answer
  • Lisa wrote the expression (3x + 6x) - 2(x + 1) + 5. She simplified the expression using the following steps:
    10·2 answers
  • Ieda and Thanh both offer piano lessons. Ieda charges an initial fee of $8.50 and an hourly rate of $11.00. Thanh charges an ini
    10·2 answers
  • What is the y-intercept of the equation y = 3x - 4?​
    8·1 answer
  • Plz help with question
    6·1 answer
  • A boundaryless organization is one that what?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!