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
anastassius [24]
4 years ago
15

If SA = 5x – 8, AD = 2x, and SD = 4x + 7, find SD.

Mathematics
1 answer:
Nonamiya [84]4 years ago
4 0

Answer:

27

Step-by-step explanation:

If S-A-D (S, A, D are collinear)

Then:

SD = SA + AD\\\therefore 4x + 7 = 5x - 8 + 2x\\\therefore 4x + 7 = 7x - 8\\\therefore 4x - 7x = - 8 - 7\\\therefore - 3x = - 15\\\therefore x=\frac{-15}{-3}\\\huge \purple {\boxed {\therefore x = 5}} \\SD = 4x + 7\\SD = 4\times 5+ 7 \\SD = 20+ 7 \\\huge \orange {\boxed {SD = 27}} \\

You might be interested in
Evaluate 2/4 _ 8z + 2 (z - 5)
SIZIF [17.4K]
Let's see....

Let's first simplify step-by-step.

2/4 - 8z + 2(2-5)

= 1/2 + - 8z + -6

Combine Like Terms:

= 1/2 + -6

= (- 8z) + (1/2 + -6)

=(- 8z) + (1/2 + -6)

= - 8z + -11/2
___________________________________

Our answer:

= - 8z + -11/2

Hope This Helps!!!!!!!!
6 0
3 years ago
What is the coordinate of the midpoint of segment AC
Aloiza [94]

Answer:

-5.5

Step-by-step explanation:

\frac{-7+-4}{2}\\\\\frac{-11}{2}\\\\-5.5

7 0
3 years ago
HELP MOI. Ty friends
stiv31 [10]
$3.19

That will be the answer sir/ma’am
6 0
3 years ago
Read 2 more answers
Find the reciprocal of 4/5
Shkiper50 [21]

Answer:

its 5/4! haha i used to be good at this when i was in 6th grade:)

5 0
3 years ago
A bus on a regular schedule takes 3 1/4 hours to reach its destination. The express bus takes 2 1/2 hours to make the same trip.
alisha [4.7K]
To find this answer, we should subtract 2 1/2 from 3 1/4. The simplest way to do this is to turn them into improper fractions, found the least common denominator, and subtract the numerators.

3 1/4=13/4
2 1/2=5/2

The least common multiple is 4, so we should multiply the numerator and denominator of 5/2 by 2.

5/2=10/4

Now we can just subtract the numerators.

13/4-10/4=3/4

Using the math above, we can see that it saves D. 3/4 hours.


3 0
3 years ago
Read 2 more answers
Other questions:
  • Which graph represents the division of -12 / 4 ?
    5·1 answer
  • If the diameter of a circle is 9 cm, then its circumference is 56.52 cm.?????
    15·2 answers
  • What is the slope of y equals 2x -1​
    14·2 answers
  • Suppose that you repeated questions 5 and 6 using two line segments of your choice. The line segments could be any length and in
    5·2 answers
  • The temperature in Alaska is currently -27 degrees F. The temperature in Texas is 72 degrees F. How much warmer is Texas than Al
    12·1 answer
  • Summarize the reason for writing the Declaration of Independence. <br><br> 1–3 paragraphs long
    13·1 answer
  • Solve the equation and check your answer 6 1/2=1 1/4 +n
    11·1 answer
  • Ramon paid $3.25 for notepads and $1.80 for markers. what is the total number of items he bought?
    12·2 answers
  • Factor the expression using the GCF<br> #18=12+42<br> #21=60 - 36<br> #24=48+80<br> #27=18-12
    7·2 answers
  • Solve pls brainliest
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!