3 years ago

Abigail says that all the numbers ending 1 are prime. Is Abigail correct or incorrect

Mathematics

2 answers:

Arada [10]3 years ago

7 0

Incorrect.......................

patriot [66]3 years ago

6 0

Incorrect.
Go through the numbers and you'll find un-prime numbers ending in 1:
21, 81, 121,...

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Brrunno [24]

The surface area of the sphere:
A = 4 r² π
1 ) r = 60 m;
A = 4 · 60² π = 4 · 3600 π = 14,400 π m²
2 ) Diameter of 14 cm:
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3 years ago

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liubo4ka [24]

Answer:

$9k^{3} -3k^{2}-29k-12$

Step-by-step explanation:

Step 1: Expand by distributing sum groups.

$3k(3k^{2} -5k-3)+4(3k^{2} -5k-3)$

Step 2: Expand by distributing terms.

$9k^{3} -15k^{2} -9k+4(3k^{2} -5k-3)$

Step 3: Expand by distributing terms.

$9k^{3}-15k^{2} -9k+12k^{2} -20k-12$

Step 4: Collect like terms.

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Step 5: Simplify.

$9k^{3} -3k^{2}-29k-12$

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3 years ago

90 to the nearest tenth

melamori03 [73]

Answer:

Step-by-step explanation:

Hey there!

Well 90.000 to the nearest tenth is just 90 because there is no decimal places to round.

Hope this helps :)

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3 years ago

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Mademuasel [1]

Check the picture below

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