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
LenKa [72]
3 years ago
7

a triangle with a base of 6cm and a height of 8cm is similar to a triangle with base 21cm. What is the height of the second tria

ngle
Mathematics
1 answer:
Greeley [361]3 years ago
5 0
Make a proportion.

Do base over height; \frac{base}{height}.

\frac{6}{8} =  \frac{21}{h}
h is the height of the second triangle. Solve for h.

Cross multiply.
\frac{6}{8} = \frac{21}{h} 
6h = 168
h = 28

The height of the second triangle is 28 cm.
You might be interested in
Write functions for each of the following transformations using function notation. Choose a different letter to represent each f
kupik [55]

Answer:

(a)\ T_{a,b} =(x +a,y+b)

(b)\ F_{y\ axis} = (-x,y)

(c)\ F_{x\ axis} = (x,-y)

(d)\ R_{o,90^o} = (-y,x)

(e)\ R_{o,180^o} = (-x,-y)

(f)\ R_{o,270^o} = (y,-x)

Step-by-step explanation:

Solving (a): Translate a units right, b units up

When a function is translated a units right, the number of units will be added to the x coordinate

When a function is translated b units up, the number of units will be added to the y coordinate.

So, we have:

T_{a,b} =(x +a,y+b)

Solving (b): Reflect across y-axis

When a function is translated across the y-axis, the x coordinate gets negated.

So, we have:

F_{y\ axis} = (-x,y)

Solving (c): Reflect across x-axis

When a function is translated across the x-axis, the y coordinate gets negated.

So, we have:

F_{x\ axis} = (x,-y)

Solving (d): 90 degrees rotation counterclockwise

When a function is rotated 90 degrees counterclockwise, the y-coordinates gets negated and then swapped with the x-coordinate.

So, we have:

R_{o,90^o} = (-y,x)

Solving (e): 180 degrees rotation counterclockwise

When a function is rotated 180 degrees counterclockwise, the coordinates are negated.

So, we have:

R_{o,180^o} = (-x,-y)

Solving (f): 270 degrees rotation counterclockwise

When a function is rotated 270 degrees counterclockwise, the x-coordinates gets negated and then swapped with the y-coordinate.

So, we have:

R_{o,270^o} = (y,-x)

6 0
3 years ago
Which expression is equivalent to 2 (×+7)-18×+4/5
Ksivusya [100]

Answer:

14.8-16x

Step-by-step explanation:

2x+14-18x+0.8

14.8-16x

4 0
3 years ago
Need help with this geometry
Rasek [7]

Answer:

y = 2

Step-by-step explanation:

The mid segment HJ is half of the third side GK , that is

HJ = \frac{1}{2} GK , substitute values

2y = \frac{1}{2} (y + 6) ← multiply both sides by 2 to clear the fraction

4y = y + 6 ( subtract y from both sides )

3y = 6 ( divide both sides by 3 )

y = 2

3 0
2 years ago
8. Each letter of the word 'Mississippi' is written on an individual card and put in a bag. A card is
MAVERICK [17]

Answer:

7/11

Step-by-step explanation:

There are 11 letters in Mississippi and 7 of the consonants therefore the answer is 7/11

4 0
3 years ago
Read 2 more answers
Using the graph of f(x) = log10x below, approximate the value of y in the equation 10y = 3.
Svetllana [295]
f(x)=\log_{10}x \\ 10^y=3 \\ y=\log_{10}3=0.4771
3 0
3 years ago
Read 2 more answers
Other questions:
  • A company charges $211.25 for 5 trees and 15 shrubs. The company charges 15.25 more for a tree than a shrub. How much does each
    5·2 answers
  • Can someone help me find the perimeter​
    9·1 answer
  • A retailer at an outdoor market sold 5 dresses at $36.95 each. He sold 2 more at $41.99 each and 3 at $38.95 each. He also sold
    6·2 answers
  • What is the surface area? 10 cm 7 cm 3 cm square centimeters
    15·1 answer
  • M(3, 4) is the midpoint of mc010-1.jpg The coordinates of S are (4, 1). What are the coordinates of R?
    9·1 answer
  • Explain how you can solve 8x45 using the distributive property
    9·1 answer
  • Which undefined term can contain parallel lines
    15·1 answer
  • PLZ NEED HELP i will GIVE YOU BRAINS FOR THE BEST EXPLINATION :)
    14·2 answers
  • While growing bacteria in a laboratory Petri dish, a scientist notices the number of bacteria over time. The observations are sh
    7·1 answer
  • PLEASE HELP
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!