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
Aleksandr [31]
3 years ago
8

85 points, Brainliest, ill report random answers>ban

Mathematics
2 answers:
Leya [2.2K]3 years ago
8 0

 all the coordinates of the original triangle have been multiplied by 1/2

A (-4,-6) x 1/2 = -2,-3

B (-8,2) * 1/2 = -4,1

C (-2,4)  *1/2 = -1,2

 so the scale factor is 1/2

 Answer is B

kari74 [83]3 years ago
5 0

Answer:

well you'd just have to multiply all of them with all of the choices and see which one is the correct answer in this case its 1/2

A (−4, −6)1/2 = (−2, −3)

B(−8, 2)1/2 = (−4, 1)

C(−2, 4)1/2 = (−1, 2)

so therefore, it is B :D

~batmans wife dun dun dun....

You might be interested in
An 14-meter-tall cylindrical tank with a 2-meter radius holds water and is half full. Find the work (in mega-joules) needed to p
agasfer [191]

Answer:

to two decimal places

= 6.04 mega joules

Step-by-step explanation:

The volume of the half tank

= πr²h

r= 2 m

h= 14/2= 7 m

Volume= 22/7 *2² *7

Volume= 88 m³

work (in mega-joules) needed to pump all of the water to the top of the tank

= Volume*mass density *acceleration*distance

= 88*1000*9.8*7

= 6036800 joules

In mega joules

= 6.036800 mega Joules

to two decimal places

= 6.04 mega joules

3 0
3 years ago
The length of the hypotenuse of the right triangle is 25 cm, the length of one of the legs is 10 cm. What is the length of the s
sergejj [24]

Answer:

\large\boxed{AD=21\ and\ CD=2\sqrt{21}}

Step-by-step explanation:

Look at the picture.

Use the Pythagorean theorem for calculate the length of CA:

CA^2+CB^2=AB^2

We have

CA=x,\ CB=10,\ AB=25

Substitute:

x^2+10^2=25^2

x^2+100=625             subtract 100 from both sides

x^2=525\to x=\sqrt{525}\\\\x=\sqrt{25\cdot21}\\\\x=\sqrt{25}\cdot\sqrt{21}\\\\x=5\sqrt{21}\ cm

ΔADC and ΔACB are similar. Therefore the corresponding sides are in proportion:

\dfrac{AD}{AC}=\dfrac{AC}{AB}

We have:

AD=y,\ AC=5\sqrt{21},\ AB=25

Substitute:

\dfrac{y}{5\sqrt{21}}=\dfrac{5\sqrt{21}}{25}

\dfrac{y}{5\sqrt{21}}=\dfrac{\sqrt{21}}{5}              cross multiply

5y=5(\sqrt{21})^2            divide both sides by 5

y=21\ cm

If you mean the length of segment CD, then use the proportion:

\dfrac{CD}{AD}=\dfrac{CB}{CA}

Substitute:

\dfrac{CD}{21}=\dfrac{10}{5\sqrt{21}}\\\\\dfrac{CD}{21}=\dfrac{2}{\sqrt{21}}\qquad\text{cross multiply}\\\\CD\sqrt{21}=42\qquad\text{multiply both sides by}\ \sqrt{21}\\\\21CD=42\sqrt{21}\qquad\text{divide both sides by 21}\\\\CD=2\sqrt{21}\ cm

3 0
3 years ago
A plane flies x mph. How far can it go in y hours? Which expression represents this?
natali 33 [55]

Answer:

xy miles

Step-by-step explanation:

3 0
3 years ago
someone please help, i don’t understand this and i’m stuck. this is my last homework i need to do for today. if you can help tha
Ad libitum [116K]

Answer:

0.38 and 0.7 maybe it's the answer

Step-by-step explanation:

power of 10 in above questions are 2 and 3 respectively

5 0
2 years ago
A system of linear inequalities is shown below:
Yuki888 [10]
The 4th selection is appropriate:
  The first line is a dashed line which joins ordered pairs (-2, 1) and (3, 1). The second line is a dashed line and joins ordered pairs (-2, -2) and (3, 3). The portion common above the first line and above the second line is shaded

6 0
3 years ago
Other questions:
  • Five pounds of cashews are mixed with five pounds of walnuts. If walnuts cost $8.50 per pound and cashews cost $6.00 per pound,
    8·1 answer
  • Given that a is the longest side length in the triangle, which of the following inequalities would make the triangle above an ob
    11·1 answer
  • One side of a triangular garden is x feet long. The other two sides of the garden are both 5 feet less than twice the length of
    5·1 answer
  • The figures above are similar. Find the missing length. Show your work.
    14·1 answer
  • Javier and the rest of his 6th grade class are selling wrapping paper to raise money for a class trip to Washington DC.
    12·1 answer
  • Rational roots of f(x)=5x^2-3x+3
    7·1 answer
  • 2<br> 5 x+y=3<br><br><br> How do u solve please help lol ?
    9·1 answer
  • Select all that apply
    5·1 answer
  • The Webster family is planning a barbecue for one hundred people. The Webster family needs one plastic plate for each person at
    11·1 answer
  • 3 cm e a а Vizatoni hapjen e trupit të dhënë në figurë dhe gjeni syprinën e tij. nni närmasat më të vogla 2 cm 6 cm​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!