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PilotLPTM [1.2K]
3 years ago
6

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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12

Step-by-step explanation:

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Which is the longest? 100mm, 5cm,1/2m​
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Answer:100mm

Step-by-step explanation:

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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

4 0
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

P(MdC) = 21/100 * 100% = 21%

8 0
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

#SPJ1

6 0
1 year ago
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