3 years ago

19 times 15 with estimating

Mathematics

1 answer:

VladimirAG [237]3 years ago

3 0

284....................

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The y intercept for this one is two.

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17- 9=6<br> I really need help with this one

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It's not right.

Step-by-step explanation:

8 is not equal to 6

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Which graph represents the function f(x)=0.2x+3?

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Answer:

The answer in the attached figure

Step-by-step explanation:

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$f(x)=0.2^{x} +3$

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The answer in the attached figure

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If the area of a circle measures 9π cm2, what is the circumference of the circle in terms of π?

8_murik_8 [283]

Answer: option B

Step-by-step explanation:

The circumference of a circle can be calculated with this formula:

$C=2\pi r$

Where "C" is the circumference of the circle and "r" is the radius of the circle.

The area of a circle can be calculated with:

$A=\pi r^2$

Where "r" is the radius.

Knowing the area, you can solve for the radius:

$r^2=\frac{9\pi cm^2}{\pi }\\\\r=\sqrt{\frac{9\pi cm^2}{\pi } }\\\\r=3cm$

Substituting into $C=2\pi r$ , you get that the circumference of this circle is:

$C=2\pi (3cm)=6\pi\ cm$

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