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A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity

Answer:

circumference: 37.7

area: 113.1

Step-by-step explanation:

for the future look up '___ of a circle'

and enter the radius (if u are given the diameter divide it by 2)

Answer:

circumference = 37.68 (37.7 if you're rounding it)

Area = 113.04 (113.1 if you're rounding it)

Step-by-step explanation:

The formula for circumference is C=2πr (2 times pi times radius)

If the diameter is 12, the radius is 6.

2 x 3.14 x 6 = 37.7

The formula for area is A=πr2 (pi x radius to the second power)

The radius is 6. Six to the second power is 36.

36 x 3.14 = 113.04

Step-by-step explanation:

Rotations, reflections, and translations are isometric. That means that these transformations do not change the size of the figure. If the size and shape of the figure is not changed, then the figures are congruent.

Answer:

its easy how do u not under stand it LOL

Step-by-step explanation:

9514 1404 393

Answer:

  A.  {(2, -1), (4, -2), (6, -3), (8, -4)}

Step-by-step explanation:

A set of ordered pairs that is a function will have no repeated x-values.

Here, the x-values are ...

  a) {2, 4, 6, 8} . . . no repeats, a function

  b) (0, 1, 1, 2} . . . 1 is repeated; not a function

  c) {3, 3, 4, 4} . . . 3 and 4 are repeated; not a function

  d) {1, 1, 2, 2} . . . 1 and 2 are repeated; not a function

The first of the listed choices represents y as a function of x.

Answer:

0.00845  and  1

Step-by-step explanation:

Answer:

Step-by-step explanation:

2.5 this doesn't really have steps all I did was divided 125 and 50. Hopefully this helps you.

Answer:

I'll do #2 for ya.

a) 27

b) 9

c) 17.5

Step-by-step explanation:

a) 75% of 36 = 27

b) 36-27=9

c) 14*1.25=17.5

Answer:

1) 25 MPH

2) I don't know. Sorry

3) 25% or 0.25

4) Nope unless you count 1

Step-by-step explanation:

1) 875/25

3) There are 60 animals. Of those 60, 15 are ducks. so, 15/60 = x/100. Cross multiply- 15*100=1500/60=25. To get the decimal, divide by 100.

Answer: 35 miles per hour

Step-by-step explanation:     875 divide a by 25

If a car traveled 875 miles in 25 hours, what was the car's speed in miles per hour?

Answer:

C.30

Step-by-step explanation:

Answer:

uhuuivfb igeg

Step-by-step explanation:

c chbqufuivphw

Answer:

9 cm

Step-by-step explanation:

divide the total circle centimeter which is 18 in half. Half of 18 is 9 so the diameter is 9.

Answer:

R = 9 cm

Step-by-step explanation:

C = 2ПR

Also C = 18П сm

2ПR = 18П

R = 18П/2П = 9 сm

Answer:

45k/h

Step-by-step explanation:

IN THE QUESTION, HE DROVE THE CAR FOR 1 HOUR AND HE MOVED 45 MILES

Answer:

Im am not exatly sure what you are confused on but Point a is on -1, -3.5 and point b is on 1,-3.5

Step-by-step explanation:

Answer:

50*10=500

Step-by-step explanation:

Answer:

I'm pretty sure the answer is d,(When both angle KMQ and MNS are equal to angle PMN, the angles KMQ and MNS are congruent.)

Step-by-step explanation:

I had this question on my practice exam for my midterm.

Answer:

i believe that the answer is the last  one, d

Subtracting a negative is the same as adding a positive, since the negatives cancel each other out.

So, 7/8 - (-1/8) is the same as 7/8 + 1/8. Adding 1/8 to 7/8 gives you 8/8, or one whole, so your answer is D. 1!

9514 1404 393

Answer:

  2463.01 mm²

  2461.76 mm² if you use 3.14 for π

Step-by-step explanation:

The formula for the area of a circle is ...

  A = πr²

where r is the radius, half the diameter.

For a diameter of 56 mm, the radius is 28 mm. Using that in the formula gives an area of ...

  A = π(28 mm)² = 784π mm²

For an appropriate value of π, the area is ...

  784π mm² = 2463.00864... mm² ≈ 2463.01 mm²

For 3.14 as the value of π, the area is ...

  784(3.14) mm² = 2461.76 mm²

_____

Comment on pi

Quite often these problems expect you to use 3.14 for pi. The required answer has 6 significant digits, so the use of a 3-digit value for pi is not appropriate. Rather, the value used should be 3.141493 or even more accurate.

Answer:

ok.

what benchmark 1 1/8 is closet to (ps benchmarks on the side) and do the same for 2 2/5 . and the benchmarks that you found subtract them.

lol sorry though I don't know sorry

Step-by-step explanation:

Answer:

Sam raised the most money in one hour

Step-by-step explanation:

Patty: $40.71 an hour

Quinn: $41.83 an hour

Reece: $37.42 an hour

Sam: $43.05 an hour

Brainliest Pls

Answer:

it is the graph that is up to 10 on the y value and 15 on the x value

( on the second picture it is the first graph)

Step-by-step explanation:

In a family number of children 3

Charge for 1 child = $y per hour

Charge for 3 children = 3y

Charge for 1 Adult = $x per hour

Charge for 2 adults = 2x

If the family does not want to s[end more than $30 an hour at health club.

Where, x and y should be greater than 0.

make the graph of this inequality.

take equality of equation and then find x and y table.

2x+3y=30

 x        y

 0        10

 6        6

 15      0

we have to take a test point (0,0)

This statement is true. So, Graph will shade towards the test point (0,0)

Answer:

Each part is 3.5 inches long.

Step-by-step explanation:

The ruler has a length of 7-inches, so when you want to split it directly in half, you divide 7/2. This is the number 3.5 inches. On the ruler you can see when looking at the first segment that it goes from 0 inches to half-way between 3 inches and 4 inches, which is 3.5 inches.

Answer:

3 1/2 inches

Step-by-step explanation:

theres isn't much work to show, other then looking at the ruler you can see that the line divides them at 3 1/2

Answer:

( I am assuming that these are all fractions)

1. 14 [tex]\frac{4}{7}[/tex]

2.  8

3. [tex]\frac{4}{15}[/tex]

4. 5 [tex]\frac{8}{11}[/tex]

Step-by-step explanation:

1. First you have to convert 15 into a fraction but it must have the same denominator causing the equation to look like 105/7 - 3/7= 102/7. But you cannot just leave the fraction like that it must be simplified 14 [tex]\frac{4}{7}[/tex]

2. Three-fifths of an hour is 36 minutes. You would next multiply 5 by 60 which would the hours into minutes 5 x 60 = 300. You would then divide 300 by 36 which would give you 8.3333333333, which I just simplified it to 8

3. In order for you to multiply a fraction you would first multiply the top then the bottom. 12 x 6= 72, 15 x 18= 270. The fraction would look like 72/270 which is simplified to [tex]\frac{4}{15}[/tex] .

4. First I changed the fractions into improper fractions causing the fraction to look like 36/8 x 14/11 (I got these answers by 8 by 4 then adding 4, then for the next fraction I multiplied 11 by 1 then added 3.) 36 x 14= 1224, 11 x 8= 88 the fraction would look like 1,224/88 you would simplify to 5 [tex]\frac{8}{11}[/tex]

Hope this helps

Please tell me if I made any mistakes I enjoy learning from them.