2 years ago

Please help I don't understand!

Mathematics

2 answers:

vaieri [72.5K]2 years ago

7 0

(-6,-12) you are welcome

BARSIC [14]2 years ago

5 0

Answer:

(-6,-12)

Step-by-step explanation:

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Tell whether the ordered pair is a solution of the linear system (-24,-10)

Dovator [93]

Answer:

IT is not

Step-by-step explanation:

Let's replace. If it's a solution, it means that BOTH equations has to be true.

$\left \{ {{-10=-5(-24)+22} \atop {-2(-24) +6(-10)=-12} \right.$

Now, the second equations seems good - $48-60 =-12$ indeed.

First alas isn't. RHS is 142, which is totally not the same as -10.

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3 years ago

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What is the volume of a sphere with a radius of 9.1 ft, rounded to the nearest tenth of

Sophie [7]

Hello!

$\large\boxed{3154.0 ft^{3}}$

Use the equation of the volume of a sphere:

$V = \frac{4}{3}\pi r^{3}$

Substitute in the given radius:

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Round to the tenths place:

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3 years ago

11. A student received a 75% on an exam. If there were 20 questions on the exam, which ratio would show the number of questions

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Answer:

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Step-by-step explanation:

is/of = %/100

x/20 = 75/100

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3 years ago

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