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
Lynna [10]
2 years ago
9

-1/2(-2x+4y) expand to write an equivalent expression and show work

Mathematics
2 answers:
DaniilM [7]2 years ago
5 0

Answer:

x-2y

Step-by-step explanation:

Vesna [10]2 years ago
4 0

Answer:

x-2y

Step-by-step explanation:

expand by multiplying each part of the paranthesis by -1/2

x-2y is the expanded expression

You might be interested in
In a certain community, 36 percent of the families own a dog and 22 percent of the families that own a dog also own a cat. In ad
zysi [14]

Answer:  a) 0.0792   b) 0.264

Step-by-step explanation:

Let Event D = Families own a dog .

Event C = families own a cat .

Given : Probability that families own a dog : P(D)=0.36

Probability that families own a dog also own a cat : P(C|D)=0.22

Probability that families own a cat : P(C)= 0.30

a) Formula to find conditional probability :

P(B|A)=\dfrac{P(A\cap B)}{P(A)}\\\\\Rightarrow P(A\cap B)=P(B|A)\times P(A)   (1)

Similarly ,

P(C\cap D)=P(C|D)\times P(D)\\\\=0.22\times0.36=0.0792

Hence, the probability that a randomly selected family owns both a dog and a cat : 0.0792

b) Again, using (2)

P(D|C)=\dfrac{P(C\cap D)}{P(C)}\\\\=\dfrac{0.0792}{0.30}=0.264

Hence, the conditional probability that a randomly selected family owns a dog given that it owns a cat = 0.264

5 0
2 years ago
Evaluate the following when x = 3<br> 2x+ 5(x)
Nina [5.8K]

Hi!

I can help you with joy!

Evaluate:

\fbox{2x+5x} when \fbox{x=3}

First, add x's:

\rm{7x}

Now, plug in the value of x (3)

\rm{7(3)

Multiply:`

\rm{21} (Answer)

Hope it helps!

Ask me if you have any doubts.

  • Enjoy Your Day/Night! :)

<em>Answered by</em>

<em>~</em>Silent~

4 0
2 years ago
Why are the triangles congruent? (Need ASAP 15points)
MAVERICK [17]

Answer:

Same sides

Step-by-step explanation:

When the sides are the same then the triangles are congruent. because they all have exactly the same sides. because the two triangles do not have exactly the same sides.

8 0
2 years ago
Read 2 more answers
Help this is due tomorrow please! Carter has 88 feet of fencing to enclose a dog pen in his yard. He is trying to decide whether
svet-max [94.6K]
<h3>Answer:</h3>

The circle makes the larger area

The difference in the two areas is roughly 132.2479 square feet.

=================================================

Explanation:

If Carter decides to go for a circle, then 88 is the circumference, which is the distance around the circle (aka perimeter of the circle).

Use this to find the radius needed

C = 2*pi*r

r = C/(2pi)

r = 88/(2pi)

r = 44/pi

I'll leave it in exact form rather than approximate it.

Once we know the radius, we can find the area of the circle.

A = pi*r^2

A = pi(44/pi)^2

A = pi*(1936/(pi^2))

A = 1936/pi

A = 616.247939651819 approximately

I used my calculator's stored version of pi to compute the area in the final step.

We'll be comparing this number later, so hold onto it for now.

-------------------------------------

If Carter instead decides for a square, then 88 is the perimeter since it's the amount of fencing he has to work with.

Divide it into 4 pieces to find the length of each side of the square (all sides are equal in a square)

88/4 = 22

Each side is 22 feet

The area of this square is (22)^2 = 22*22 = 484 square feet

--------------------------------------

Summary:

  • If Carter goes for a circular enclosure, then he gets roughly 616.2479 square feet.
  • The square enclosure only gets him exactly 484 square feet.

The circle wins in terms of larger area.

The difference being roughly 616.2479  - 484 = 132.2479 square feet.

3 0
2 years ago
Which choice is the correct graph of Ix &lt;3?
yuradex [85]

Answer:

2347 elevated in the cube

Step-by-step explanation:

nashe

3 0
2 years ago
Other questions:
  • What does the radius-tangent theorem state?
    13·1 answer
  • What are the Cartesian coordinates of a point with polar coordinates (17, 60 degrees)?
    13·1 answer
  • Evaluate 3y-2 for y=9
    8·2 answers
  • Round 6.7086 to the nearest thousandth.
    6·1 answer
  • Simplify this expression <br> (1/3 + 11/12)×2/3
    9·1 answer
  • Someone please help! You have to use the ambiguous case.​
    8·1 answer
  • The coordinates (12.6) (12:10) (18.6) and (18.10) will be the comers of the floor for the sound
    6·1 answer
  • 3 × 70° 45' 30" - 2 × 40° 25' 10"<br>​
    13·1 answer
  • How do you determine two angles which are coterminal to the given angles ?
    12·1 answer
  • To keep in shape, Meg exercises at a track near her home. She requires 40 minutes to do 8 laps running and 6 laps walking. Assum
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!