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Phoenix [80]
3 years ago
10

What can you conclude about the two triangles? why?

Mathematics
1 answer:
ehidna [41]3 years ago
3 0
How are the two triangles? 
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What is 7n-20=9(4n+1) ????
SIZIF [17.4K]
7n-20=9(4n+1)\ \ \ \ | omit\ the\ bracket\\\\
7n-20=36n+9\ \ \ | add\ 20\\\\
7n=36n+29\ \ \ | subtract\ 36n\\\\
-29n=29\ \ \ | divide\ by\ -29\\\\
n=-1\\\\Solution\ is\ n=-1.
4 0
3 years ago
Read 2 more answers
You are trying to decide between two job offers. You find the best option is to take the highway to work. That route is
Alja [10]

Answer:

The farthest distance would be 32.5 miles

Step-by-step explanation:

Given,

Speed = 65 miles per hour,

If t represents the time ( in hours ) taken in travelling,

Since, time has to commute down less than 30 minutes,

Also, 1 hour = 60 minutes,

\implies 1\text{ minute}=\frac{1}{60}\text{ hour}

\implies 30\text{ minutes}=\frac{30}{60}=\frac{1}{2}\text{ hour}

Thus,

t\leq \frac{1}{2}

i.e. the highest time taken = 1/2 hours,

We know that,

Distance = speed × time,

∵ Distance ∝ time,

⇒ Distance will farthest for largest time taken,

Hence, the farthest distance = 65\times \frac{1}{2} = 32.5 km.

4 0
3 years ago
Read 2 more answers
A car used 15 gallons of gasoline and traveled a total distance of 350 miles. The car's fuel efficiency is 25 miles per gallon o
stepan [7]
The equation would be letter b. 25h + 20 (15 - h) = 350
Let’s try to solve to get the value of h
=> 25h + 20(15 -h) = 350
=> 25h + (300 – 20h) = 350
=> 25h + 300 – 20h = 350
=> 300 + 5h = 350
=> 5h = 350 – 300
=> 5h / 5 = 50/ 5
=> h = 10
Thus the value of h is 10 which means a car travel on the highways and used 10 gallons of gasoline,



3 0
3 years ago
69 points!!!
Amiraneli [1.4K]

Answer:

C)  The solution for the given system of equations are A(0,-5) and B(-4,3)

Step-by-step explanation:

The given system of equation are : x^{2}  + y^{2}  = 25\\2x  + y  = -5

from equation 2, we get   y = -5 - 2x .

Put the above value of y in the equation (1).

We get: x^{2}  + y^{2}  = 25  \implies x^{2}  + (-5-2x)^{2}  = 25

By ALGEBRAIC IDENTITY:

(a+b)^{2}   = a^{2}  +  b^{2}  + 2ab\\ (-5-2x)^{2} = (-5)^{2}  +  (-2x)^{2}  + 2(-5)(-2x)

or, x^{2}  + (-5-2x)^{2}  = 25  \implies x^{2} + (25  +  4x^{2}  + 20x)  = 25

or, 5x^{2}  + 20x = 0  \implies x(5x + 20) = 0

⇒ x = 0 or,   x  = -20/5 = -4

So, the possible values for x are: x  = 0 or  x  = -4

If x  = 0, y = -5-2x = -5-2(0) = -5

and if x = -4, y = -5 -2(-4)   = -5 + 8  = 3

Hence, the solution for the given system of equations are A(0,-5) and B(-4,3)

8 0
3 years ago
A ball weighs 15 pounds on Earth and 5.7 on Mars. What is the constant proportionality between the weight of an object on Mars a
Diano4ka-milaya [45]
Mars is about 2.3 times less weight
6 0
3 years ago
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