The table shows the decay rate for a certain radioactive material over time. In this context, what does the y-intercept represent?
At 100 hours, there are 0 grams of the substance remaining.
At 100 hours, there are 100 grams of the substance remaining.
At 0 hours, there are 100 grams of the substance remaining.
At 0 hours, there is 1 gram of the substance remaining.

Answers

Answer 1

Answer:

At 0 hours, there are 100 grams of the substance remaining.

Step-by-step explanation:

Answer 2

Answer:

c

Step-by-step explanation:

I just did it on ed


Related Questions

PLZ HELP ME WITH THIS ASAP

Answers

Answer: y= 9

Step-by-step explanation: x, y= 9

i don’t understand can I have help please

Answers

Answer:

(y + 1)³

Step-by-step explanation:

Answer:

y^3+3y^2+3y+1

Step-by-step explanation:

Factor the numerator and denominator to cancel the common factors.

(Whenever ^ is in the answer, it means that the number to the right of it is the exponent)

Urgent! Someone please answer! Will give Brainliest!


4 cm

x cm

The area of rectangle ABCD is 28 cm2

B

B

a) What is the length of side AB in terms of x?

6 cm

length of AB =

(1)

x cm

D

с

b) If the area of rectangle ABCD is 28 cm,

we can show that x2 + ax = b where

a and b are integer values.

Work out the values of a and b.

b

a =

(1)

b=

(1)

Total marks: 3

Answers

Step-by-step explanation:

it is the most easiest answer we get 566474 I think this will help you

13- pls help with this pre-algebra problem is urgent

Answers

Answer:

What else is in the equation?

Step-by-step explanation:

Also, i think the - should be right here>-13 instead of it being here 13-<

pls help!!!!

Sandra uses 6.39 ounces of beans in a recipe. If she triples the recipe, how many ounces of beans will Sandra need?​

Answers

Answer:

19.17 ounces

Step-by-step explanation:

If she uses 6.39 ounces for 1 recipe and she wants to "triple" the recipe we then know that triple also means 3 times.

Due to that fact we now know what our equation is:

6.39 x 3  which equals 19.17

I hope this helps have great day :)

Answer: 19.17

Step-by-step explanation:  6.39 x 3 = 19.17

Divide $80 among three people so that the second will have twice as much as
the first, and the third will have $5 less than the second. Using an algebraic
equation, find the amount that each will get.

Answers

Answer: 19,38, and 33.

Step-by-step explanation:

80=2x+x+2x-5=5x=95=x=19

Help me please!! :) :)

Answers

THE SECOND AND THIRD ANSWERS

Please help and no links!!!!

Answers

Answer: 18

Step-by-step explanation:

simplify.
remove all perfect squares from inside the square roots. assume x and y are positive.
√8x^3y^2

Answers

Answer:

[tex]2xy\sqrt{2x}[/tex]

Step-by-step explanation:

Because this is a whole term in itself (no addition or subtraction), you can just directly find squares and factor them out. First, when looking at 8, you can factor out 4, to get 2 on the outside. Then, while looking at x cubed, you can factor out x squared, to get x on the outside, and when looking at y squared, you can just pull that outside itself, to get y. Now, we have one 2 and one x remaining, for a total of [tex]2xy\sqrt{2x}[/tex]

Sophie liked 35 of the 50 different flavors of Jelly Beans. Enter the percent of the Jelly Bean flavors she did not like.

Answers

70% would be the answer

A submarine is cruising at an elevation of
-250/3 meters below sea level, then
descends another 120% meters into the
sea. What is the new location of the
submarine?……NO LINKS

Answers

Answer:

Step-by-step explanation:

these are two different questions .

first i solve first

position of submarine= -250/3 meters below see level

height descended=120 % of 250/3=120/100 ×(250/3)=300,00/300=100 m

new location=-250/3+(-100)=-650/3 below see level.

2nd question

position of submarine=-250 2/3=-752/3 m below see level

height descended=120 5/8=965/8 m =-965/8 m below see level

new positin=-752/3+(-965/8)=-(6016+2895)/24=-8911/24=-371 7/24m below sesa level.

some one please help

Answers

Answer:

i can't see the photo

Step-by-step explanation:

pleas send it again

Answer:

Step-by-step explanation:

f(x) = 3-x/5

 

Explanation:

The inverse of a function completely swaps the x and y values. One way to find the inverse of a function is to switch the "x" and "y" in an equation

y=3x -5

turns into

x = 3y+5

Then solve the equation for y

x=3 y- 5

x+5 = 3y

the divide all by three

1/3x + 5/3 =y

f ( x ) − 1 = 3/1 x + 5/3

A piece of fabric for a quilt design is in the shape of a parallelogram. The base is 5 in
and the height is 4.3 in. What is the total area of the 23 parallelogram pieces needed for
the quilt?

Answers

Answer:

A =a l × w and then you solve the equation you get the answer

Answer:

494.5 square inches

Step-by-step explanation:

5 times 4.3 is 21.5

21.5 times 23 is 494.5

Which ordered pair is a solution to
the equation
3x + 9y = 27 ?

Answers

Answer:

x=9-3y

Step-by-step explanation:

- Move the variable to the right & change its sign

3x + 9y = 27

- Divide both sides by 3

3x = 27 - 9y

- Write the solution x in parametric form

x=9-3y

- Solution:

x= 9-3y

someone please help me

Answers

Answer:

∡3 & ∡6 are same side interior angle.

∡4 & ∡6 are alternate interior angles.

∡2 & ∡8 are vertical angles.

∡1  & ∡5 are corresponding angles (because they are in the same spot).

∡1  & ∡3 are vertical angles (because they are the opposite angle of each other).

∡1 & ∡2 are supplementary angles (because they add up to 180°).

3х — бу - z = 3
4х +4y +z= — 1
X-2y – z = -1

Answers

Answer:

[tex]3x - 6y - x + 3 = =[/tex]

The Stock Market Nadia is a stockbroker. She earns 13% commission each week. Last week, she sold $5,300 worth of stocks. How much did she make last week in commission? If she averages that same amount each week, how much did she make in commission in 2011?

Answers

Answer:

34

Step-by-step explanation:

2/5 divided by 2/3 in simplest form

Answers

The answer is 3/5 in simplest form

Answer:

[tex]\frac{3}{5}[/tex]

Step-by-step explanation:

When dividing by fractions, you can instead invert the fraction and multiply:

[tex]\frac{a}{b}\div\frac{x}{y} =\frac{a}{b} \times\frac{y}{x}[/tex]

To answer your question:

[tex]\frac{2}{5} \div\frac{2}{3} =\frac{2}{5} \times\frac{3}{2} =\frac{2\times3}{5\times2}=\frac{6}{10}=\frac{3}{5}[/tex]

а Ava and her children went into a movie theater and she bought $48 worth of drinks and candies. Each drink costs $4 and each candy costs $3. She bought 2 more candies than drinks. Graphically solve a system of equations in order to determine the number of drinks, x, and the number of candies, y, that Ava bought.​

Answers

Answer:

x = 6

y = 8

Explanation and graph is given in picture

I hope it helps.

Why is math hard????

Answers

Answer:

It doesnt have to be, you are making it. It's really just addition multiplication divison and subtraction in different ways

Step-by-step explanation:

Answer:

BECAUES IT IS

Step-by-step explanation:

I don´t know

?.....helpp lolllll helpppp

Answers

The answer is F, which is p/100 = 270/450

Answer: the answer is F

Step-by-step explanation: the pictures that are used for the yearbook are added to the picture for the paper which results in 450, the 270 is on top because it’s the pictures for the yearbook

Using substitution, which value of x makes this equation true?

3+x = 10

A. 13
B. 7
C. -7
D. -13

Answers

Answer:

The answer is B. 7

Step-by-step explanation:

3 + x = 10

3 + 7 = 10

B.

x=7.

Step by step:

x+3=10.

x=7.

(I subtracted 3 on both sides)

Hope this helped!! :)

100 POINTS IF U GET THIS RIGHT!

Answers

Answer:

The y-intercept is 4.

Step-by-step explanation:

Our equation: y = mx + b

m = slope

b = y-intercept

=> Now, let's compare:

=> y = mx + b = y = -7x + 4

We can tell that b = 4

Hoped this helped.

[tex]y =-7x +4 \\\\\text{ The above equation is in a form of y=mx+b, where b is the y-intercept}\\\\\\\text{Hence the y-intercept of the given equation is}~ 4.[/tex]

PLS HELP ASAP ITS AN EMERGENCY ITS DUE IN A FEW HOURS THANKS

Answers

Answer: -8

Step-by-step explanation:

-8+22=14

Has to be less than 14 so the value has to be less than -8

what is 2+3-4+6+22=

not that hard

Answers

Answer:

29

Step-by-step explanation:

Simplify 2+3 to 5

5-4+6+22

Simplify 5-4 to 1.

1+6+22

Simplify 1+6 to 7.

7+22

Simplify.

29

Find the product of (3x + 7y)(3x − 7y)

Answers

Answer:

9x^2 - 49y^2

Step-by-step explanation:

Answer: 9x^2 - 49y^2

Step-by-step explanation:

(3x + 7y)(3x − 7y)

9x^2 -21xy + 21xy - 49y^2

9x^2 - 49y^2

Describe the steps you used to solve the equation and find the amount of Carrie’s allowance.

Linear equation:
1/4a+ 1/3 a + 8 = 22

Answers

Multiply each of the fractions by 1 to get them to have the same denominator.
1/4 x 3/3 = 3/12
1/3 x 4/4 = 4/12
New Equation:
3/12a + 4/12a + 8 = 22
now add up similar terms
7/12a + 8 = 22
subtract 8
7/12a = 14
multiply each side by your denominator
12(7/12)a=12(14)
7a=168
divide by 7
a = 24

pls help asap! i will mark brainliest!

Answers

Answer:

3

Step-by-step explanation:

2 x 7= 14 - 17= 3

What’s the product of 2.6

Answers

Answer:

2×6=12

Step-by-step explanation:

Josh, Ben and Rick have 70 marbles altogether. The ratio of the number marbles Josh has to the number of marbles Rick has is 1: 2. However, Ben has 15 marbles fewer than Rick. How many marbles does Ben have?

Answers

Answer:

Ben has 19 marbles

Step-by-step explanation:

First taking that josh and ricks ratio is 1:2, this would set up in an equation as [tex]2j = r[/tex] and with ben having 15 less than rick, his formula would be [tex]r = b + 15[/tex] as well as the total of all the boys marbles together being this [tex]j+r+b=70[/tex]

Now we put all of these equations into a set to answer them.

[tex]2j = r\\ r = b + 15\\j+r+b=70[/tex]

First we solve for j

[tex]2j = r\\ j=\frac{1}{2} r[/tex]

Then substitute j

[tex]j+r+b=70\\ \frac{1}{2}r+r+b=70\\ 2b+3r=140[/tex]

Then simplify and multiply by 2 to even out

[tex]r = b + 15\\ -b+r=15\\2b+3r=140[/tex]

Now eliminate the b variable and combine equations

[tex]2b+3r=140\\-2b+2r=30[/tex]

[tex]5r=170[/tex]

Now divide and solve for r

[tex]5r=170\\r=34[/tex]

Now we know Rick has 34 marbles of the 70 marbles, so we can substitute his number back into the original equation

[tex]-b+34=15\\b=19[/tex]

Now we know Ben has 19 marbles of the remaining 36, and can substitute his number as well

[tex]j=\frac{1}{2}(34)\\j=17[/tex]

And now we know how much everyone has, to check we rewrite all the equations with their respective numbers

[tex]11+34+19=70\\2(17)=34\\34=19+15[/tex]

[tex]70=70\\34=34\\34=34[/tex]

Which means the ordered pairing of (b, j, r) is (19, 17, 34)

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