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Element X is a radioactive isotope such that every 30 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 1400 grams, how long would it be until the mass of the sample reached 800 grams, to the nearest tenth of a year?

Answer:

3/11

Step-by-step explanation:

You add both of the fractions so 2+1 is equal to 3 and 8+3 is equal to 11. You can not simply any further from 3/11

Answer:

2.5 gallons

Step-by-step explanation:

You can just check the graph by searching for the y-axis for 100miles ^^

Answer:

2.5 gallons

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Answer:

dude just what's your fortnite username

Answer:

The equation represents: A relation and a function

Step-by-step explanation:

A function is said to be a relation; however, the relation does not have to function. For a relation to result in a function, then every input gives an important output. Thus; the given information x² + y - 15 = 0 can be re-written as:

y = - x² + 15

Similarly, the equation typically illustrates a relation as well. Consequently, suppose we replace any x-value for x, then the one possible output will be for y. Hence, that is also a function.

Answer:

A

Step-by-step explanation:

The answer is A

Answer:

[tex](a + 1) ^{2} + 1[/tex]

[tex]a ^{2} + 2a + 2[/tex]

Answer:

1967 or 2069

Step-by-step explanation:

To do this, you need to equal the expressions:

3x^2+53x+261=4x^2-52x+212

now, solve for y, when x=0:

-1(0)^2+53(0)+261=4(0)^2-52(0)+212

0+0+261=0-0+212

261=212

the difference is 49, so 49 years before or after 2016.

i think i did this right, if not im sorry bc im tired

Answer:

Pick either point (-6, 24) or (7,-15) and plug the x and y values into the above equation along with the value of m to get b.

Step-by-step explanation:

Answer:

No estoy seguro, intenta preguntarle a tu profesor

Step-by-step explanation:

Every fraction with a non-zero denominator or divisor is a rational number.

"A rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator 'p' and a non-zero denominator 'q'."

Given, a fraction has a non-zero denominator.

Therefore, the fraction is a rational number for any possible case.

An integer itself a rational number.

A decimal number is always a rational number.

A quotient is the result of dividing one number with the another.

Learn more about rational number here: https://brainly.com/question/1153200

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Answer:

4/10 x 10 = 40/100

Step-by-step explanation:

I have done this one before.

I hope this helps!

Answer:

4/10 x 10 = 40/100

Step-by-step explanation:

I had  queation today

Answer:

a. 0.75 reams

b. The amount of reams received by each teacher would increase by 2.25 reams.

Step-by-step explanation:

Total reams of copy paper = 6

Number of fifth-grade teachers = 8

a. Number of reams collected by each teacher = [tex]\frac{number of reams}{number of teachers}[/tex]

                                                    = [tex]\frac{6}{8}[/tex]

                                                    = [tex]\frac{3}{4}[/tex]

                                                    = 0.75 reams

b. Twice as many reams of paper = 2 x 6

                                                        = 12

Half as many teachers = [tex]\frac{1}{2}[/tex] x 8

                                      = 4

Number of reams collected by each teacher = [tex]\frac{12}{4}[/tex]

                                       = 3 reams

The amount of reams received by each teacher would increase by;

                                     3 - [tex]\frac{3}{4}[/tex]

                                       = [tex]\frac{12 - 3}{4}[/tex]

                                       = [tex]\frac{9}{4}[/tex]

                                      = 2.25 reams

The amount of reams received by each teacher would increase by 2.25 reams.

Answer:

It'll take 5 months until they have the same amount of hats

Answer:

5 months

Step-by-step explanation:

This system of equations has been set up in a way that should be easier for you to do. If h=m+11, doesn't that mean you could substitute m+11 for h?

You can start by writing m+11=3m+1 then solve it as any normal equation and you get 5!

Answer:

The puck traveled a distance of 5.38 meters or 5,380 meters

Step-by-step explanation:

Here, we want to know the distance the puck traveled.

The distance from the player’s current location to the opponent’s is 55 meters

Since there are 100 centimeters in a meter, then

55 m= 55 * 100 = 5,500 centimeters

Now, we are told that the puck landed just 120 cm from the opponent’s goal

The distance traveled by the puck will be;

5,500 cm - 120 cm = 5,380 cm

The puck traveled a distance of 5,380 cm or 5.38 meters (5,380 cm to meters is calculated by just dividing by 100)

Intro:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

This is the slope formula [tex]y=mx+b[/tex] if you know what each letter stands for you know which one is slope.

Each Letter Meanings:

y stands for the y-value in the order pairs on the line.

m stands for the rate of change, AKA the slope of the line.

x stands for the x-value in the order pairs on the line.

b stands for the y-intercept.

_________________________________________________________

So now you should have figured out that [tex]\frac{1}{3}[/tex] is the slope of the line.

Answer:

slope is 1/3

first point y intercept is 1/7

its a non linear function

(-3/7,0) (0,1/7)

Step-by-step explanation:

Answer:

Raise both sides of the equation to the power of 2

Raise both sides of the equation to the power of 2 again

Simplify to get a quadratic equation.

Use the quadratic formula to find the values of x.

Step-by-step explanation:

The radical equation is expressed as:

[tex]\sqrt{x+3} - \sqrt{2x-1} = -2[/tex]

The following steps are to be followed to calculate x:

Step 1: Raise both sides of the equation to the power of 2.

[tex](\sqrt{x+3} - \sqrt{2x-1})^2 = (-2)^2\\x+3 - 2\sqrt{x+3}\sqrt{2x-1}+(2x-1) = 4\\ - 2\sqrt{x+3}\sqrt{2x-1}+x+3+2x-1 = 4\\ - 2\sqrt{x+3}\sqrt{2x-1}+3x+2 = 4\\ - 2\sqrt{x+3}\sqrt{2x-1} +3x-2 = 0\\[/tex]

Step 2: Raise both sides of the equation to the power of 2 again

[tex](-2\sqrt{x+3}\sqrt{2x-1})^2 = (2-3x)^2\\4(x+3)(2x-1) = (2-3x)^2\\[/tex]

Step 3: Simplify to get a quadratic equation.

[tex]\\4(2x^2-x+6x-3) = 4-12x+9x^2\\4(2x^2+5x-3) = 4-12x+9x^2\\8x^2+20x-12 = 4-12x+9x^2\\x^2-32x+16 = 0[/tex]

Step 4: Use the quadratic formula to find the values of x.

x = 32±√32²-4(16)/2

Answer:

4$ off every time because if you take 6×11 you get 66 from the total without anything off and then subtract 66-46 and you get 20 so you take 20÷ 5 because 1 round was his first and there was no discount on the first round so your answer is 4$ everytime

Answer:

-4/5

Step-by-step explanation:

Answer:

-5/4

Step-by-step explanation:

Rise over run (It rises up 5 and to the left 4 between intersecting lines)

Answer:

96

Step-by-step explanation:

12 x 8 = 96

Answer:

13) 11

15) 16/61 or 0.262295082

Answer:

Multiply the bases and add the exponents.

Step-by-step explanation:

Remember your rules of exponents that show you how to do this. When multiplying you add the exponents. A large exponent makes a large number and a negative exponent makes a very small number.

Answer:

Hi;)

Step-by-step explanation:

Answer:

Step-by-step explanation:

We want to find the height between the helicopter and the submarine

let us use the water as reference

therefore the given information

helicopter= 100 feet about sea level.

submarine = 250 feet below the sea level.

Therefore the distance between the helicopter and the submarine is given as

=100+250

=350feet

Answer:

0.85, 0.86, 0.87, 0.88 or 0.89

Step-by-step explanation:

This is because, to round up a number to the nearest, the number after that number must be greater than or equal to 5. So, any of 0.85, 0.86, 0.87, 0.88 or 0.89 can be rounded to the nearest tenth since the digit after the 8 is greater than or equal to 5. So, 0.85 rounds to 0.9 to the nearest tenth, 0.86 rounds to 0.9 to the nearest tenth, 0.87 rounds to 0.9 to the nearest tenth, 0.88 rounds to 0.9 to the nearest tenth and 0.89 rounds to 0.9 to the nearest tenth.

So, any of 0.85, 0.86, 0.87, 0.88 or 0.89 can be rounded to the nearest tenth is 0.9

Answer: The distance between 15 yards to 18 yards is 3 yards.

Step-by-step explanation:

Answer:

Step-by-step explanation:

=|-3/4|-(2/5+1/10)

=0.75-(2/5+1/10)

=0.75-(2/5+1/10)

=0.75-1/2

=0.25

Answer:

1/4

Step-by-step explanation:

i did this question on time4learning 2022

Answer:

A =37

Step-by-step explanation:

Because you should just do the 32 + 5 since it is equal to A therefore, whatever the answer is should be what A is equal to. So: 30 + 2 + 5 = 37.

Answer:

True, in the term 4x the coefficient would b 4 and the variable would be x

Answer:

True

Step-by-step explanation:

It is true not false. Very True

Answer:

Step-by-step explanation:

5(4+2)+2=32

20-(8*(6-6))=20

The graph of the given equation is plotted below.

The given equation is y=2/7 x.

Graph is a mathematical representation of a network and it describes the relationship between lines and points. A graph consists of some points and lines between them. The length of the lines and position of the points do not matter.

Graph the line using the slope and y-intercept, or two points.

Slope: 2/7

y-intercept: (0, 0)

Plot the points (0, 0) and (7, 2) on the graph

Hence, the graph of the given equation is plotted below.

To learn more about the graph visit:

brainly.com/question/14375099.

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Answer:

–2k3 – 3k2 – 1.3k

Step-by-step explanation:

Hope this helped, Have an amazing day!!

Answer:

its C (what the guy said above)

Step-by-step explanation: