Am i right?? please help!

Mathematics

1 answer:

ladessa [460]3 years ago

5 0

Answer: yes

Step-by-step explanation:

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8.4 inches

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3 years ago

Solve equation by factoring.

3241004551 [841]

Hi ;-)

$x^2+6x-10=30 \ \ /-30\\\\x^2+6x-40=0\\\\a=1, \ b=6, \ c=-40\\\\\Delta=b^2-4ac=6^2-4\cdot1\cdot(-40)=36+160=196\\\\\sqrt{\Delta}=\sqrt{196}=14\\\\x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-14}{2}=\boxed{-10}\\\\x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+14}{2}=\boxed4$

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3 years ago

Help... need it right now ;-;

zalisa [80]

Answer:

Step-by-step explanation:

|3 + 2 - 6| = |5 - 6| = |-1| = 1

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3 years ago

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Mira has breakfast at a restaurant. She leaves a 20% tip of $1.80.

Effectus [21]

Answer:

36 cents

Step-by-step explanation:

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3 years ago

Complex Numbers

seropon [69]

Answer:

±10

Step-by-step explanation:

sqrt(-4) * sqrt(-25).

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3 years ago