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
Virty [35]
3 years ago
8

In ΔPQR, point C is the centroid. If PZ = 7, then RZ = A) 3.5 B) 7 C) 14 D) 21

Mathematics
1 answer:
kvv77 [185]3 years ago
4 0

Answer: It's 7

Step-by-step explanation:

You might be interested in
A line passes through the point (–2, 7) and has a slope of –5. A coordinate plane. What is the value of a if the point (a, 2) is
Nana76 [90]

Y = mx + c

7= (-5)(-2)+ c

7= 10 +c

7-10=c

-3=c

Equation of the line: y = -5x-3

Sub in (a, 2)

2= - 5(a)-3

2+3= -5a

5= - 5a

1= - a

A = -1

8 0
2 years ago
Read 2 more answers
A rectangle has a perimeter of 30 ft. Find a function that models its area A in terms of the length x of one of its sides. What
Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

Let the other side of the rectangle be y. The perimeter of the rectangle is expressed as P = 2(x+y)

Given P = 30ft, on substituting P = 30 into the expression;

30 = 2(x+y)

x+y = 15

y = 15-x

Also since the area of the rectangle is xy;

A = xy

Substitute y = 15-x into the area;

A = x(15-x)

A = 15x-x²

The function that models its area A in terms of the length x of one of its sides is A = 15x-x²

The side of length x yields the greatest area when dA/dx = 0

dA/dx = 15-2x

15-2x = 0

-2x = -15

x = -15/-2

x = 7.5 ft

Hence the side length, x that yields the greatest area is 7.5ft.

Since y = 15-x

y = 15-7.5

y = 7.5

Area of the rectangle = 7.5*7.5

Area of the rectangle = 56.25ft²

6 0
2 years ago
2(x+2)-5=3(x+1)
Eva8 [605]

Answer:

\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}

2(x + 2) - 5 = 3(x  + 1) \\ 2x + 4 - 5 = 3x  + 3 \\ 2x - 1 = 3x  +  3 \\   - 1 - 3 = 3x - 2x \\  - 4 = x

5 0
2 years ago
Read 2 more answers
Find the value of x.
Pepsi [2]
I would the answer to x is 12
5 0
2 years ago
How many and what type of solutions does the equation have?
ella [17]

Answer: C

Step-by-step explanation:

Simplify to 4x^2 + 12x + 5 = 0 so that all the terms are on one side.

Do a part of the quadratic formula to see.

You only need to do the -b^2-4ac part. If it is negative, that means there are irrational solutions. If it is positive, it has two solutions. If it is 0, it has 1 solution.

12^2-4(4)(5) = 64

It is positive so it has two solutions.

7 0
2 years ago
Other questions:
  • I have a question on my summer packet. Find 33% of 90
    11·2 answers
  • Let the sequence {an} be defined so that a1 = 1 and each succeeding term is found by adding 3 to the one before it. Find the for
    13·1 answer
  • DIRECTIONS: Use this information to answer Parts A and B.
    6·1 answer
  • Lisa wants to frame her little brothers drawings is 43.5 cm by 934 mm how many cm of wood framing will she need
    6·2 answers
  • A recipe calls for 2 cups of flour and 1 1/2 cup milk to make four servings. Ming has plenty of flour, but only 6 cups of milk.
    10·1 answer
  • The width of a rectangle is the length minus 7 units. The area of the
    12·1 answer
  • If f(x)=2x^3+4x^2, find f(-3)
    10·1 answer
  • A^10x^7xc^12 divided by 7^6xb^4xc^12
    5·1 answer
  • a group of 4 pupils can take 2 weeks to do a certain job.how long will 12 pupils take to complete the job if they work at the sa
    14·1 answer
  • The scale factor of S to T is 4:1
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!