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3 years ago

13

Is 3.172 a rational number? Or is it irrational?

2 answers:

babunello [35]3 years ago

8 0

Answer:

it is rational

Step-by-step explanation:

ollegr [7]3 years ago

8 0

Answer:

i don't think so

Step-by-step explanation:

Recurring decimals such as 0.26262626…, all integers and all finite decimals, such as 0.241, are also rational numbers. Alternatively, an irrational number is any number that is not rational. It is a number that cannot be written as a ratio of two integers (or cannot be expressed as a fraction).

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Find the x intercept (s) of the line <br> Y= -8x-16

Bess [88]

when you find x-intercept, you are finding the coordinate when y=0, hence sub y=0,

-8x-16=0

8x=-16

x=-2

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3 years ago

Which solid has six faces, four lateral faces, two bases, eight vertices, and 12 edges? square pyramid triangular prism rectangu

marusya05 [52]

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*********************************************

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3 years ago

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Which pair of complex factors results in a real-number product?

Crank

we will proceed to solve each case to determine the solution of the problem

we know that

$i^{2} =-1$

<u>case A</u>. $15*(-15i)$

$15*(-15i)=-225i$

<u>The result of case A is not a real number product</u>

<u>case B</u>. $3i*(1-3i)$

$3i*(1-3i)=3i*(1)-(3i)*(3i)\\=3i-9i^{2}\\=3i-9*(-1)\\=3i+9$

<u>The result of case B is not a real number product</u>

<u>case C</u>. $(8+20i)*(-8-20i)$

$(8+20i)*(-8-20i)=8*(-8)+8*(-20i)+20i*(-8)-20i*(20i)\\=-64-160i-160i-400i^{2}\\=-64-320i-400*(-1)\\=-64-320i+400\\=336-320i$

<u>The result of case C is not a real number product</u>

<u>case D</u>. $(4+7i)*(4-7i)$

$(4+7i)*(4-7i)=4^{2} -(7i)^{2}\\=16-49i^{2}\\=16-49*(-1)\\=65\\$

<u>The result of case D is a real number product</u>

therefore

<u>the answer is the option</u>

$(4+7i)*(4-7i)$

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3 years ago

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What is the probability of the spinner landing on 2? A spinner is split into 4 equal parts labeled 1, 2, 3, and 4.

guapka [62]

Answer:

It has a 25% chance of landing on 2

Step-by-step explanation:

If it is split into 4 equal parts each 1/4th is 25%

so landing on 2 would be 25%

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2 years ago

Evaluate what’s in the picture.

Anna11 [10]

Answer:

8P3 = 336

9C4 = 126

Step-by-step explanation:

8P3 = 8! ÷ 5! = 8x7x6 = 336

9C4 = 9! ÷ (5!·4!) = (9x8x7x6) ÷ (4x3x2) = 126

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2 years ago