2 years ago

Please answer these questions it's very urgent please

Mathematics

2 answers:

vesna_86 [32]2 years ago

7 0

Answer:

29) 10

Step-by-step explanation:

the other I can't do...

Nesterboy [21]2 years ago

6 0

Answer:

29) x = 10

30) 1.275 × 10⁻⁵

Step-by-step explanation:

29) 2x / 5 = 4 ⇒ 2x = 20 ⇒ x = 10

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3 years ago

What two numbers add to 9 and multiply to -70

Alborosie

X, y - the numbers

The numbers add to 9 and multiply to -70.
$x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
9x-x^2=-70 \\
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-x-5=0 \ \lor \ x-14=0 \\
x=-5 \ \lor \ x=14 \\ \\
y=9-x \\
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The numbers are -5 and 14.

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2 years ago

Which shuttle service has a greater initial value?

Irina-Kira [14]

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2 years ago

Please answer these questions it's very urgent please​

Please answer these questions it's very urgent please