What is the percent of increase from 50 to 90?A.
40%

B.
44%

C.
56%

D.
80%

Answers

Answer 1

Answer: $percent \ increase= (new \ value-old \ value)/(old \ value) * 100 \% \n = (90-50)/(50) * 100 \% \n = (40)/(50) * 100 \% \n =80\%$

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Pythagorean Theorem Determine the length of the missing side?

Answers

The answer should be 12.2
7^2+10^2=c^2
49+100=c^2
149=c^2
12.2=c

Answer:

c= sqrt149; 12.2 rounded

Step-by-step explanation:

Pythagorean Theorem to find c(hypotenuse): a^2+b^2=c^2

7^2+10^2=149

sqrt149= 12.2 rounded

What is the percentage increase from 200 to 280

Answers

$280-200=80\n\n(80)/(200)\cdot100\%=(2)/(5)\cdot100\%=2\cdot20\%=40\%\n\nAnswer:Percentage\ increase=40\%.$

The answer is 71.428 percent increase (rounded to the nearest thousandth.

What is the explicit formula

Answers

Answer:explicit formula is a formula we can use to find the nth term of a sequence. In the easiest definition, explicit means exact or definite. The formula is explicit because as long as it's applied correctly, the nth term can be determined

Step-by-step explanation:

Answer:

inkly dinkly

Step-by-step explanation:

moopsie poopsie

There are 130 red, blue and green marbles in a bag. The ratio of red to blue to green is 5:3:2 respectively. How much marbles in the bag are blue?

Answers

5 parts are red
3 parts are blue
2 parts are green

There are 10 parts in the bag altogether, and they add up to 130 marbles.
So each 'part' is 13 marbles.

Red = 5 parts = 65 marbles
Blue = 3 parts = 39 marbles
Green = 2 parts = 26 marbles

65 + 39 + 26 = 130 so we ended up on the track.

One would take the ratios, and add them.
5+3+2 = 10
The divide the total number of marbles by the sum of the ratios.
130/10 = 13
And finally multiply the quotient by each of the three numbers in the ratio (5:4:3) to get the number of marbles that are each colour.
Red: 13 * 5 = 65
Blue: 13 * 4 = 52
Green: 13 * 3 = 39
Therefore, there are 52 blue marbles in the bag.

Clarise evaluated this expression.(66.3 – 14.62) ÷ 0.6 – 0.22

(51.68) ÷ 0.6 – 0.22

(51.68) ÷ 0.42

51.68 ÷ 0.16

32.3

Which errors did Clarise make? Check all that apply.
1. She subtracted before evaluating the exponents.
2. She evaluated inside the parentheses first.
3. She divided before she subtracted.
4. She subtracted before she divided.
5. She divided incorrectly.