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djverab [1.8K]
3 years ago
15

A system of equation is shown x=10. 3x + 5y =20 what is the solution

Mathematics
1 answer:
Natali [406]3 years ago
3 0

Answer:

(r,y) = (10, - 2)

Step-by-step explanation:

[1]    x = 10

[2]    3x + 5y = 20

0? + x = 10        5? + 3x = 20  

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2 years ago
"isotherms are drawn at regular intervals; on this map, the interval between successive isotherms is ______ fahrenheit degrees."
Marizza181 [45]

An isotherm on a geographic map is a type of equal temperature at a given date or time. And if we talk about thermodynamics, it is a curve on a Pressure – Volume diagram at a constant temperature.

 

Basing from the graph, we can actually see that the interval is:

 

10 <span>Fahrenheit degrees</span>

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3 years ago
Find the radius of a circle if it’s circumference is numerically equal to its area
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Answer:

Step-by-step explanation:

hello :

if : r  the radius  ( r ≠0)

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5 0
3 years ago
This is due tomorrow and i have answers but i think ive done it wrong! please help
Eva8 [605]

Answer:  i) 1 - 9x² - 12x

               ii) 17 - 3x²

             iii) - 20 + 10x² - x⁴

<u>Step-by-step explanation:</u>

g(x) = 3x + 2       h(x) = 5 - x²

i) h(g(x))

  h(3x + 2) = 5 - (3x + 2)²

                  = 5 - (9x² + 12x + 4)

                  = 5 - 9x² - 12x - 4

                  = 1 - 9x² - 12x

ii) g(h(x))

   g(5 - x²) = 3(5 - x²) + 2

                 = 15 - 3x² + 2

                 = 17 - 3x²

iii) h(h(x))

   h(5 - x²) = 5 - (5 - x²)²

                 = 5 - (25 - 10x² + x⁴)

                 = 5 - 25 + 10x² - x⁴

                 = -20 + 10x² - x⁴

4 0
3 years ago
Subtract 19/12 - 3/4
AfilCa [17]
<h2>◇Answer : </h2>

\rm \frac{19}{12}  -  \frac{3}{4}  =  \frac{9}{12}  -  \frac{9}{12}  =  \frac{9 - 9}{12}  =  \frac{0}{12} =  \bf0 \:  \: (done.)

4 0
2 years ago
Read 2 more answers
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