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givi [52]
3 years ago
8

The sum of three numbers is 21. Three times the smallest is 3 less than the largest, while the sum of the largest and smallest i

s 15. Use linear system in three variable to find the three numbers

Mathematics
2 answers:
Lynna [10]3 years ago
7 0
3, 6, 12
I guessed and checked. So if 3 is the smallest number, I would, multiply it by 3, which is 9. 9 is 3 less than the largest number which would be 12. 12 + 3 is 15. To find the third number, subtract 21 and 15 which is 6
nordsb [41]3 years ago
3 0
One of the numbers is 6.
The other is 12.
The last is 3.

Difficult, but not impossible!
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The center of a circle is 5 units below the origin, and the radius is 10 units. what is the equation of the circle?
levacccp [35]

Answer:

x² + (y + 5)² = 100

Step-by-step explanation:

If the center of the circle is 5 units below the origin, its x coordinate is 0 and its y-coordinate is -5. So, the center of the circle is at (0, -5).

Using the equation of a circle with center (h, k)

(x - h)² + (y - k)² = r² where r = radius of the circle.

Given that r = 10 units, and substituting the values of the other variables into the equation, we have

(x - h)² + (y - k)² = r²

(x - 0)² + (y - (-5))² = 10²

x² + (y + 5)² = 100

which is the equation of the circle.

6 0
3 years ago
Read 2 more answers
Dos triángulos son semejantes, si sus ángulos son iguales y sus lados proporcionales. Verdadero o falso?
iren2701 [21]

Answer: verdadero.

Step-by-step explanation:

En geometría se dice que dos figuras son semejantes si tienen la misma forma pero no necesariamente el mismo tamaño.

Ahora, lo que define la forma de un triángulo son sus ángulos, entonces si dos triángulos tienen los mismos ángulos, estos triángulos van a tener la misma forma.

Y los lados siendo proporcionales entre ellos (recordar que una relación proporcional es y = k*x) habla de la relación entre los tamaños de los dos triángulos.

Entonces si, "dos triángulos son semejantes, si sus ángulos son iguales y sus lados proporcionales" es verdadero.

5 0
3 years ago
Write your answer as a decimal or whole number.<br><br> ___% of $75=$42
Basile [38]

Answer:

x=56

Step-by-step explanation:

\frac{x}{100} · \frac{42}{75}

then cross multiply

4200=75x

x=56

3 0
3 years ago
What’s 75+127-76= and what’s 75% of the answer
astra-53 [7]

Answer: 94.5

Step-by-step explanation:

First do the addition, then subtract, then do 75% / 126 and you get 94.5

6 0
3 years ago
Read 2 more answers
HELP ME PLEASE geometry only answer if you know please!
topjm [15]

Answer:

2. Reason: Addition Property of Equality

3. Statement: 3x=18

4. Reason: Division property of Equality

5. Statement: x=6 Reason: Simplifying.

Step-by-step explanation:

I'm pretty sure this is correct.  

6 0
3 years ago
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