the 2008 year book at middleton middle school had 236 candid pictures of students. the 2007 yearbook had 214 candid pictures of students. what was the percent of change in the number of candid student pictures from 2007 to 2008 to the nearest tenth?

Answers

Answer 1

Answer: Use proportions.
214/236=x/100(100 because it's a percentage.
cross multiply:
23600=214x
solve for x:
x= 11.3(rounded)
11.3% increase

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3/5 as a percent. Please help

Write the word name for each number and tell the value of the underlined digit 3,552,308,725 and the number under lined is the second 5

Answers

This number is three billion, five hundred fifty-two million, three hundred eight thousand, seven hundred twenty-five.
The second 5 (from the left) is in the ten millions place. It has a value of 50,000,000.

daphne has 3 days to drive 932.4 miles . approximately how many miles does she need to drive each day.

Answers

So you're trying to figure out the number of miles in a day, so you could do:
total miles = miles
total time day
932.4 miles = 310.8 miles per day
3 days

hakeem's frog made 3 quick jumps. the first was 1m. the second was 85cm and the third was 400mm. what was the total length in cm of the frogs 3 jumps?

Answers

1m=100cm
85 cm
400 mm=40 cm
Add up them up and you get 225 cm in total

the ratios of saves for a baseball pitcher to the number of save oportunites are given for three relief pitchers: 9/10 4/5 17/20. write each ratio as a present. order the precent for least to greatest

Answers

The answer is... 80%, 85%, and 90%.

4/5=80%
17/20 =85%
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Of 140 seventh-grade students, 15% earn the Presidential Physical Fitness Award. How many students earn the award?

Answers

We have an equation: ?/140= 15/100

Cross multiply:
100*?= 15*140
⇒ ?= 15*140/100= 21

21 students earn the Presidential Physical Fitness Award~

15% is equivalent to the fraction 3/20 so you must divide 140 by 20 then multiply by 3 to get the final answer of 21 students. Hope this helps :D

Simplify -8+6i/4-2i

Answers

Answer:

-1.1+0.4i

Step-by-step explanation:

Multiply the numerator and the denominator by $4+2i:$

$(-8+6i)/(4-2i)\cdot (4+2i)/(4+2i)=(-32-16i+24i+12i^2)/(4^2-(2i)^2)\ \ [\text{use formula }a^2-b^2=(a-b)(a+b)]\n \n=(-32+8i-12)/(16-4i^2)\ \ [\text{remember }i^2=-1]\n \n=(-44+8i)/(16+4)\n \n=(-44+8i)/(20)\n \n=-(11)/(10)+(4)/(10)i\n \n=-1.1+0.4i$

Answer:

−11

Step-by-step explanation:

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