3x^2+x^2=20 (3x squared+ x squared = 20)

Mathematics

2 answers:

liq [111]3 years ago

7 0

Answer:

Step-by-step explanation:

hello :

Question

3x²+x²=20

4x² = 20

x² =5

x= √5 or x= - √5

marin [14]3 years ago

3 0

Answer:

x = ± $\sqrt{5}$

Step-by-step explanation:

Given

3x² + x² = 20, that is

4x² = 20 ( divide both sides by 4 )

x² = 5 ( take the square root of both sides )

x = ± $\sqrt{5}$

That is x = - $\sqrt{5}$ or x = $\sqrt{5}$ ← exact solutions

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2 years ago

alvin and simon raced a distance of 2.9 x 10^2 kilometers. they need to race 7 times that distance in kilometer. how far must th

dimaraw [331]

The distance in kilometers in scientific notation $2.03 \times 10^3 km$

<h3>Scale factors</h3>

Scale factors are values or constants multiplied with a variable

If Alvin and Simon raced a distance of $2.9 \times 10^2$ kilometers and they need to race 7 times that distance in a kilometer, the distance traveled will be: