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3 years ago

Add 6/7 + 80/9. Enter your answer below as an improper fraction in lowest terms, using the slash (/) as the fraction bar.

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

8 0

Answer:

the answer is 614/63

Step-by-step explanation:

6/7 + 80/9

614/63

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2 years ago

Simplify the expression(a4−6a2b2+ b4)−(−2a4+5a2b2+ 3b4) and hence, find its value for a = 2and b = −1.

ELEN [110]

Answer:

(a) $3a^4 - 11a^2b^2 -2b^4$

(b) $3a^4 - 11a^2b^2 -2b^4= 2$

Step-by-step explanation:

Given

$(a^4 - 6a^2b^2+ b^4) - (-2a^4+5a^2b^2+ 3b^4)$

Solving (a): Simplify

$(a^4 - 6a^2b^2+ b^4) - (-2a^4+5a^2b^2+ 3b^4)$

Open brackets

$a^4 - 6a^2b^2+ b^4 +2a^4-5a^2b^2- 3b^4$

Collect Like Terms

$a^4 +2a^4- 6a^2b^2-5a^2b^2+ b^4 - 3b^4$

Simplify Like Terms

$3a^4 - 11a^2b^2 -2b^4$

Solving (b): Simplify when a = 2 and b = -1

$3a^4 - 11a^2b^2 -2b^4$

$3*(2)^4 - 11*(2^2)*(-1)^2 -2*(-1)^4$

$3 * 16 - 11 * 4 * 1 - 2 * 1$

$48 - 44 - 2$

$= 2$

Hence:

$3a^4 - 11a^2b^2 -2b^4= 2$

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3 years ago

Please help on question b

Viktor [21]

Answer:

Step-by-step explanation:

Number of males who exclusively drink coffee: 21.

Total number of people: 100

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3 years ago

Between July 28 and 30 of last year over 41.2 cm (about 16 inches) of rain fell in a city. The normal total monthly rainfall i

ZanzabumX [31]

The amount more of rain that fell in those three days than normally falls in July and August combined was 31.19 cm.

<h3>How much more rain fell in those three days?</h3>

The amount of rain in those three days was 41.2 cm.

The combined normal rain July and August is:

= 6.36 + 3.65

= 10.01 cm

The difference is therefore:

= 41.2 - 10.01

= 31.19 cm

Find out more on quantity of rainfall at brainly.com/question/13045834

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1 year ago

Add 6/7 + 80/9. Enter your answer below as an improper fraction in lowest terms, using the slash (/) as the fraction bar.​

Add 6/7 + 80/9. Enter your answer below as an improper fraction in lowest terms, using the slash (/) as the fraction bar.