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
faust18 [17]
3 years ago
9

A) For AQRS use the Triangle Proportionality Theorem to solve for x.

Mathematics
1 answer:
xenn [34]3 years ago
8 0

Answer:

a. x = 14

b. Perimeter = 77

Step-by-step explanation:

a. Based on the Triangle Proportionality Theorem:

\frac{2x - 2}{13} = \frac{21 - 7}{7}

\frac{2x - 2}{13} = \frac{14}{7}

\frac{2x - 2}{13} = 2

Cross multiply

2x - 2 = 2(13)

2x - 2 = 26

Add 2 to both sides

2x = 26 + 2

2x = 28

Divide both sides by 2

x = 14

b. Perimeter of ∆QRS = RQ + QS + RS = (2x - 2) + 13 + 17 + (21 - 7) + 7

Plug in the value of x

= (2(14) - 2) + 13 + 17 + 14 + 7

= 26 + 13 + 17 + 14 + 7

= 77

You might be interested in
Jamisha is solving the equation 4 ( x − 2 ) = 34 for x . Her work is shown in the table.
shtirl [24]

Answer:

Step-by-step explanation:

4x -8 = 34

4x = 42

x = 42/4 = 21/2 = 10.5

3 0
3 years ago
Which graph represents the solution set of the system of inequalities? {y&lt;−3x−2y<br> y≤x−2
irina1246 [14]

Answer:

Option 1

Step-by-step explanation:

In each inequality we have the equation of a line.

The first step in solving this problem is to identify each line in the figures.

To do this, we willient your cut points.

y = x-2

We do y = 0

0 = x-2

x = 2. This line cuts the x-axis at x = 2.

Now we do x = 0

y = -2.

This line cuts the y-axis in y = -2.

Now we can identify this line in the figure.

The inequality is:

y≤x - 2

Then the region that represents this inequality are all the points below the line y = x-2 and also those that belong to the line.

Try for example the point (0, -4) that is below this line.

-4≤0-2

-4≤-2. The inequality is met.

We do the same for the other line:

y<-3x - 2

y = -3x-2.

The cut points are:

2 = -3x

x = -2 / 3

y = -2

Locate in the graphs the line that meets these characteristics.

The region understood by this inequality are all points below the line

y = -3x-2 and which, in turn, are below the line y = x-2.

Once again, the point (-4.0) complies with both inequalities.

Identify these characteristics in the options, and you will see that the correct option is the first

4 0
3 years ago
Read 2 more answers
For what values of x is the expression below defined?<br> √x+4÷√1-x
wariber [46]

Answer:

x=1

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A new car dealer offered to sell her demonstrator model for 90% of the retail price. If the sale price was $9,750, what was the
Rainbow [258]
The answer would be 10833.3 
4 0
3 years ago
Read 2 more answers
Can someone help me solve these problems?
Sonja [21]

Answer:

2. A is false

   B is false

   C is false

   D is true

4 0
1 year ago
Other questions:
  • Can u Please Help Me (20 Points)
    15·1 answer
  • Which equations have a value less than 6,766? A. one fourth x 6,766 = ________ B. 6 x 6,766 = ________ C. one half x 6,766 = ___
    14·1 answer
  • On Sunday, 370 people bought tickets to the county fair. Tickets cost $7 for adults and $3 for children. The total revenue from
    14·1 answer
  • A lot with a depth of 80 feet and an area of 4,800 square feet was sold for $350 per front foot. What was the total sales price?
    9·1 answer
  • Solve the system of equations 2r + 2s = 50 and 2r – s = 17. A. r = 3, s = 11 B. r = 25, s = 33 C. r = 14, s = 11 D. r = –8, s =
    9·1 answer
  • What is the area of the triangle?
    11·1 answer
  • Write a slope-intercept equation for a line that passes through ( - (4,5) and (4, - 11).
    9·1 answer
  • 3 1/4 minus 1 7/8 equals
    12·2 answers
  • PLZ HELPPPPP QUICKLYYYY!!!!!!!!!!!!!
    10·1 answer
  • Find (g o f) (x) <br> F(x)= x^2 - 7x + 14 <br> g(x)= 4x-9
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!