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2 years ago

Round 743,214 to nearest ten thousand

Mathematics

1 answer:

AveGali [126]2 years ago

3 0

743,214 rounded to the nearest ten thousand would be 740,000

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) You travel 220 km on 20 litres of petrol. How many km per litre?

spayn [35]

Answer:

220km per 20litre, so 220/20 to get 11km/litre

Step-by-step explanation:

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3 years ago

Which shows the following expression after the negative exponents have been eliminated?

SVETLANKA909090 [29]

Answer:

$\frac{a^3b^4}{ab^2}$ which is the last choice in the question

Step-by-step explanation:

Simplify

$\frac{a^3b^{-2}}{ab^{-4}} = \frac{a^3}{a}\frac{b^{-2}}{b^{-4}}$

Using the fact that $\frac{x^m}{x^n} =x^{m-n}$

We get

$\frac{a^3}{a} = a^{3-1} = a^2$

$\frac{b^{-2}}{b^{-4}} = b^{-2-(-4)} = b^2$

$\frac{a^3b^{-2}}{ab^{-4}} =a^2b^2$

Multiplying numerator and denominator by $ab^2$ gives

$a^2b^2 \frac{ab^2}{ab^2}$

= $\frac{a^3b^4}{ab^2}$ ANSWER

Hint:

We can eliminate first choice since negative exponents still remain

We can eliminate third choice because the expression has a minus sign which is not possible

That just leaves second and fourth choices to work with

7 0

2 years ago

Which of the following relations is a function? A.{ (-2, 4), (-1, 3), (5, 2), (1, 4) } B.{ (1, 7), (1, 8), (2, 7), (3, 8) } C.{

siniylev [52]

From the pairs of x,y, if the set has two "x" of the same value, that is, "x" repeats, or an x-repeat, then is NOT a function

so, the group that doesn't have any x-repeats, is a function, now let's check

$\bf A.\{ (-2, 4), (-1, 3), (5, 2), (1, 4) \}\\\\
B.\{ (\boxed{1}, 7), (\boxed{1}, 8), (2, 7), (3, 8) \}\impliedby \textit{has one re}\textit{peat, no dice}\\\\
C.\{ (2, 4), (\boxed{4}, 6), (\boxed{4}, 8), (6, 4) \}\impliedby \textit{also has one re}\textit{peat, no dice}\\\\
D.\{ (\boxed{5}, 7), (6, 3), (8, 6), (\boxed{5}, 4) \}\impliedby \textit{same, has one re}\textit{peat, no dice}$

3 0

3 years ago

Xavier fills a rectangular prism with 12-centimeter cubes. The base of the prism measures 5 centimeters by 3 centimeters, and th

7nadin3 [17]

Answer:

I tried A.

Step-by-step explanation:

It's all like a fraction & multiplication type answer im if wrong correct me!

3 0

3 years ago

Read 2 more answers

3/8 times 4 divided by 5/7