Isabel had 21 coins in her collection. Frank had 3 times as many coins as Isabel had. Which equation can be used to determine the number of coins Frank had? *

21 ÷ _?_ = 3
3 x 21 = _?_
21 + 3 = _?_
3 + _?_ = 21

Answer:

Its c pretty sure

The answer to your question is D

First, you multiply the two decimal numbers, without the x 10 part:

3.84 x 2

7.68

Next, you add the exponents of the 10's:

5 + 6

11

Therefore, it is 7.68 x 10^11

Hope it helps and have a great day!

Answer:

50

Step-by-step explanation:

60% of 50 is 30

Answer:

x > 0

Step-by-step explanation:

Domain of a function is defined by the set of x-values of the graph of a function.

From the graph attached,

x-values are starting from x > 0 [Since x ≠ 0] and moves towards infinity,

Therefore, domain of the function will be,

(0, ∞) Or x > 0

Answer:

it's B on Edg

Step-by-step explanation:

I just took the test

Answer:

your answer is 3

Step-by-step explanation:

36 divide by 3 = 12 and 12 divide by 2 = 6 and 6 divide by 2 = 3

Answer:

25！=1*2*3*4*5*6*...23*24*25

26= 2*13

28=2*14or 4*7

36=2*18or 3*12 or 4*9

56=7*8

All products above are inside 25! So they are all factors of 25!

But 58=2*29 and 29 is not inside 25! so it's not a factor of 25!

Step-by-step explanation:

hope it helped

Answer:

n=25

Step-by-step explanation:

Let n be the greatest possible integer Jo could be thinking of. We know n<100 and n=8k-1=7l-3 for some positive integers k and l. From this, we see that 7l=8k+2=2(4k+1), so $7l$ is a multiple of 14. List some multiples of 14, in decreasing order: 112, 98, 84, 70, .... Since n<100, 112 is too large, but 98 works: [tex]$7k=98\Rightarrow n=98-3=95=8(12)-1$[/tex]. Thus,[tex]$n=\boxed{95}$[/tex].

Hope this helped! :)

(a)first term=2

(n)no of term=10

(r)common ratio=8/2=4

sn={a(r^n-1)}÷(r-1)

s1o={2(4^10-1)}÷(4-1)

s10={2(1048576-1)}÷3

s10=2097150÷3

s1o=699050

Answer:

14.25

Step-by-step explanation:

im sorry im bad at explaning

Answer:

x=-1

Step-by-step explanation:

4(x-3(-2))=6(x-3(-2)) => 4(x+6)=6(x+6) => 4x+24=6x+26 => -2=2x => x=-1

95% is greater than 0.9 95%>0.9

Answer:

5 : 9

Step-by-step explanation:

You combine the two values that you have been given (5 and 9) to get the ratio of hot togs to apple juice.

hope this helpsss :)

-13x + 3 is decreasing and has a negative slope.

Answer:

A and 1/3

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

i searched up a percentage calculator ;-;

Answer:

choose the last one.

[tex] \tan(28) = 0.53[/tex]

Answer:

tan 28° = 0.53

So, Option D is correct answer.

Step-by-step explanation:

We need to find the value of tan 28°

We need to find the value of tan 28° , which can be found by simply using calculator.

Put tan 28 in the calculator and we can get our answer.

Putting the value of tan 28 in the calculator, we get

tan 28° = 0.53

So, Option D is correct answer.

Answer:

The sale price would be $80.00

Step-by-step explanation:

1/3 (33%) of $120 is $40.

$120 - $40 = $80

Answer:

its the third one down so -4t + 12t squared + 4t cubed

Step-by-step explanation:

Answer:

219x

Step-by-step explanation:

Answer:

20% decrease

Step-by-step explanation:

First, let's find the net decrease: Peter started at 80kg and his weight is now 64kg, which is a 16kg decrease. Next, we need to find what percentage of 80kg 16kg represents. First, let's find what part of 80 is 16:

16/80 = 1/5

To convert this to a percent, we need to find an equivalent fraction to 1/5 with a denominator of 100. To do this, we can multiply the numerator and denominator of 1/5 by 20, giving us 20/100, or 20%.

Step-by-step explanation:

x: 10

y:-6

........................

Answer:

849.75 km^2

Step-by-step explanation:

First, 6.75% is equal to 0.0675

each year, it decreases by 0.0675 x 3300 or 222.75km^2

0.0675 x 3300

222.75 km^2

in 11 years, 11 x 222.75, 2450.25, will be gone

11 x 222.75

2450.25 km^2

that means 849.75 km^2 will be left:

3300 - 2450.25

849.75 km^2

Answer:

849.75

Step-by-step explanation:

3300-222.75x

x is the year

222.75 is 6.75%

3300-222.75(11)=849.75

Step-by-step explanation:

When we have a function in formula form, it is usually a simple matter to evaluate the function. For example, the function \displaystyle f\left(x\right)=5 - 3{x}^{2}f(x)=5−3x

2

can be evaluated by squaring the input value, multiplying by 3, and then subtracting the product from 5.

Answer:

136.35

Step-by-step explanation:

Answer:

B. Austin did not combine -3 and -9 correctly.

Step-by-step explanation:

He solved it like it was 9 - 3 but he needed to solve as -9 - 3.

PLZ THANK AND GIVE FIVE STARS.

AND PLZ GIVE BRAINLIEST.

Answer:

c = 11

Step-by-step explanation:

-8 = -19 + 11

9514 1404 393

Answer:

  (-3, 3)

Step-by-step explanation:

The midpoint of a line segment is the average of the end point coordinates:

  ((1, 1) +(-7, 5))/2 = (1 -7, 1 +5)/2 = (-6, 6)/2 = (-3, 3) . . . midpoint coordinates

Answer:

Go ask your teacher for the video

Step-by-step explanation:

Answer:

337.5

Step-by-step explanation:

50÷2 = 25

75÷2 = 25

13.5×25 = 337.5

The missing value in the ratio table is 337.5.

It is the comparison of one quantity with another. For example, if your weight is 30 kg and your father's weight is 90 kg, then the ratio of weight is 1:3.

Given data:

Cost (dollars) 2, 3, 13.5

Time (minutes) 50, 75

The ratio of cost: time  = 2 / 50 = 0.04

The ratio of cost: time = 3 / 75 = 0.04

Hence,

Ratio = cost / time

0.04 = 13.5 / t

t = 337.5

Therefore, the missing value in the ratio table is 337.5.

To know more about Ratios:

https://brainly.com/question/13419413

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