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
What is the answer of the equation 234+(-234).
Radda [10]

Answer:

It would be 0

Step-by-step explanation:

234+(-234) = 0

unless you meant the absolute value of -234

then it would be 468

8 0
3 years ago
Read 2 more answers
Describe how you would estimate the square root of 100
max2010maxim [7]

I am not completely sure but Khan Academy might show how to do that. Or it might at least give an example.

5 0
3 years ago
What is the interest on a loan of $7,850 that is borrowed at 6.55% for 18 months?
Flauer [41]

Answer:

{ \tt{simple \: interest = }} \\ { \tt principle \times rate \times period}\\  \\  = 7850 \times 6.55\% \times 18 \\ { \tt{interest = 925515 \: dollars}}

7 0
3 years ago
Read 2 more answers
What is the metric system
Anettt [7]

Answer:

the decimal measuring system based on the meter, liter, and gram as units of length, capacity, and weight or mass. The system was first proposed by the French astronomer and mathematician Gabriel Mouton (1618–94) in 1670 and was standardized in France under the Republican government in the 1790s.

Step-by-step explanation:

7 0
3 years ago
Select the two values of x that are roots of this equation.<br> 2x^2+ 1 = 5x
iren [92.7K]

Answer:

\frac{5+\sqrt{17}}{4},      \frac{5-\sqrt{17}}{4}

Step-by-step explanation:

One is asked to find the root of the following equation:

2x^2+1=5x

Manipulate the equation such that it conforms to the standard form of a quadratic equation. The standard quadratic equation in the general format is as follows:

ax^2+bx+c=0

Change the given equation using inverse operations,

2x^2+1=5x

2x^2-5x+1=0

The quadratic formula is a method that can be used to find the roots of a quadratic equation. Graphically speaking, the roots of a quadratic equation are where the graph of the quadratic equation intersects the x-axis. The quadratic formula uses the coefficients of the terms in the quadratic equation to find the values at which the graph of the equation intersects the x-axis. The quadratic formula, in the general format, is as follows:

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

Please note that the terms used in the general equation of the quadratic formula correspond to the coefficients of the terms in the general format of the quadratic equation. Substitute the coefficients of the terms in the given problem into the quadratic formula,

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}

Simplify,

\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}

\frac{5(+-)\sqrt{25-8}}{4}

\frac{5(+-)\sqrt{17}}{4}

Rewrite,

\frac{5(+-)\sqrt{17}}{4}

\frac{5+\sqrt{17}}{4},      \frac{5-\sqrt{17}}{4}

8 0
3 years ago
Other questions:
  • Please can people help??!!<br> Photo below
    7·2 answers
  • The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall.
    10·1 answer
  • Whats 2/5 + 1/3 please answer quickly
    15·2 answers
  • Which expression is equivalent to 64 – 9x^2?
    11·1 answer
  • Jules wrote the number 4 ten thousandths ona sheet of paper write this number as a decimal below
    12·1 answer
  • What is the y-intercept of the function f(x) = –negative StartFraction 2 Over 9 EndFraction.x + ?
    11·2 answers
  • Please help and tell me how you got the answer I will give brainliest
    13·1 answer
  • Carly has 168 markers,
    9·1 answer
  • I don’t know this answer please help
    10·1 answer
  • 20 POINTS<br><br> Part E<br> How many of the 320 million Americans would you predict wear glasses?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!