Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 40 grams, how much of the element would remain after 11 years, to the nearest whole number?

Answers

Answer 1

Answer:

30

Step-by-step explanation:


Related Questions

What is the area, in square meters, of the trapezoid.
10.4 m
5.8 m
6.4 m

Answers

Answer:

48.72.

Step-by-step explanation:

good luck

What is the slope-intercept equation for the following line? y = 1.4x + [? Enter​

Answers

Answer:

y = -4x + -3

Step-by-step explanation:

We know the slope-intercept form is y = mx + b, and m is the slope of the line, and b is the y-intercept. To find the slope, we need to divide the difference of the y coordinates by the difference of the x coordinates. We already have the slope listed there which is very helpful, so now all we need to do is find the y-intercept (where the line goes through the y axis). If we count the lines on the y axis starting from the origin and going downwards, we see that the line passes through at (0,-3), so the y-intercept is -3. Now we replace the variables with the correct numbers, and the answer would be y = -4x + -3. I hope this helped!! :]

Please Help These two!
Thank you

Answers

Answer:

7. there are 30 pounds per box

8. $1.89 per notebook

Step-by-step explanation:

helppp! please this is due tmr!!!

Answers

Answer:

111

Step-by-step explanation:

both of the interior angles add up tp the exterior angle

mark brainliest

Draw a cone with a height of 9 in. and a diameter of 4 in. Find the volume. Round to the nearest tenth.

Answers

Answer:

Cone Volume = (PI * radius^2 * height) / 3

Cone Volume = (PI * 2^2 * 9) / 3

Cone Volume = 113.0973355292 / 3

Cone Volume = 37.7 cubic inches

Source: http://www.1728.org/volcone.htm

Step-by-step explanation:

The simplified fractional representation of
0.353535... is ____/_____?

Answers

Answer:

Step-by-step explanation:

0.3535... = 35/99

You need 3 sticks of butter for every 24 cookies you bake.
Complete the table using equivalent ratios.
3. 24
16
5. 32​

Answers

Step-by-step explanation:

3 sticks of butter make 24 cookies

which means we multiplied 3 by 8

then we devide 16 cookies by 8 which is 2 (as you did)

therefore 5 multiplied by 8 equals 40

Use the Pythagorean Theorem to find the measure of the space diagonal line in the box
picture if the length of the box "a" = 13 inches; width of the box "b" = 5 inches; and height
of the box "c"= 8 inches. * S
(10 Points)
Pythagorean Theorem Formula: a? + b2 = 2
256 inches
257 inches
258 inches
(259 inches

Answers

Answer:

14.42inches

Step-by-step explanation:

Given the following

b = 5 in

c = 8in

we are to find the measure of the space diagonal line

Using the pythagoras theoreml

l^2 = b^2 + c^2

l^2 = 13^2 - 5^2

l^2 = 169 -25

l^2 = 144

l = 12in

To get the measure of the space diagonal line in the box, we will use the pythagoras theorem;

s^2 = l^2 + c^2

s^2 = 144 + 8^2

s^2 = 144 + 64

s^2 = 208

s= 14.42inches

Hence the required length ix 14.42inches

Find the missing side length to the nearest tenth of a millimeter. Enter your answer in the box.

About ___ mm

Answers

Answer:

missing side = 4.7 mm

Step-by-step explanation:

using the Pythagorean theorem:

7² - 5.2² = x²

49 -27.04 = x²

x² = 21.96

x = 4.69

Sergio has ppp paintings in his art collection. He and other local painting collectors agreed to donate a total of 484848 paintings to the local museum. Each of the 121212 collectors will donate the same number of paintings.

Answers

Answer:

Total paintings Sergio have in his art collection after his donation = p - 4

Step-by-step explanation:

P.S - The exact question is -

Given -Sergio has p paintings in his art collection. He and other local painting collectors agreed to donate a total of 48 paintings to the local museum. Each of the 12 collectors will donate the same number of paintings.

To find - How many paintings will Sergio have in his art collection after his donation ?

Proof -

Given that,

Total collectors = 12

Total painting that has to denote = 48

⇒12 collectors donate paintings = 48

⇒1 collector donate painting = [tex]\frac{48}{12}[/tex] = 4 paintings

∴ we get

Each collector donate paintings = 4

⇒Sergio donate total paintings = 4

Now,

Total pictures Sergio have = p

After donating,

Total left paintings = p - 4

∴ we get

Total paintings Sergio have in his art collection after his donation = p - 4

Triangle RST and its image, triangle R’S’T’, are graphed on the coordinate grid below.

Which rotation, using the origin as the center of rotation, transformed RST to R’S’T’?
A. a 90° clockwise rotation
B. a 90° counterclockwise rotation
C. a 45° clockwise rotation
D. a 45° counterclockwise rotation

Answers

Answer:

B. a 90º counterclockwise rotation

Step-by-step explanation:

You can tell that it moves 90º and it moves in a counterclockwise direction because from RST to R’S’T’ it moves left to right. That is counterclockwise when you look it up.

Hope this helps!!! :)))))

BRAINLIEST!!!!!!!! On your own… (12 points) a. Create your own “real-world” algebraic equation using two variables. Also write the word problem that creates your equation. b. Express the equation in standard form and slope-intercept form. c. Graph the equation. d. Write a paragraph of at least 3 sentences explaining your word problem and how you developed the equation to represent your real world situation.

Answers

Hello, I Am BrotherEye

Answer:

1. Choose one of these equations: (20 points) 10x + 12y = 10,500 4x + 6y = 2,340 10x + 6y = 150 a. Write your own word problem that could match one of the equations above. Abby makes $150 a day at her new job as an assistant for a fashion designer in New York. She earns $10 an hour plus $6 for every dress she trailers. How many hours does she have to work and how many dresses does she have to tailor to earn $150? b. Rewrite the equation in slope-intercept form. y= -(5)/(3)x + 25 c. Graph the Equation

Step-by-step explanation:

Answer:

a.) Someone needs to make 4 cookies per person in their class, and 6 muffins per person in their class. In total, they made 210 baked goods. How many people are in their class?

b.) standard form: 4y+6y=210 / slope-intercept form: y= 21

c.) the graph is the image added below.

d.) I made up a simple word problem off the top of my head. I converted it into a real world situation because I got inspiration from the topic of a bake sale. I wanted to make it simple, so I couldn't have the person bake stuff for a bake sale, since 210 is too little of a number for the whole school, so I shortened it to just the person’s class

Write the equation of the line that passes through points (-4,-1) & (5,3)

Answers

Step-by-step explanation:

ax+by+c=0 is the equation of a line

using y-y1=m(x-x1)

m=3+1/5+4=4/9

y+1=4/9(x+4) multiplying through 9

9y+9=4(x+4)

9y+9=4x+16

9y+9-4x-16=0

9y-7-4x=0

9y-4x-7=0

then you have your answer

What is the value of c in the equation below? 2 Superscript negative 4 Baseline times 2 squared = a Superscript b Baseline = c Negative 4 Negative 2 Start Fraction 1 Over 64 End Fraction One-fourth

Answers

Question:

What is the value of c in the equation below?

[tex]2^{-4}*2^2 = a^b = c[/tex]

A. -4     B. -2     C. 1/64     D. 1/4

Answer:

[tex]c = \frac{1}{4}[/tex]

Step-by-step explanation:

Given

[tex]2^{-4}*2^2 = a^b = c[/tex]

Required

Find c

The equation can be rewritten as:

[tex]c = 2^{-4}*2^2[/tex]

[tex]c = a^b[/tex]

Solving: [tex]c = 2^{-4}*2^2[/tex]

Apply law of indices

[tex]c = 2^{-4+2}[/tex]

[tex]c = 2^{-2}[/tex]

Apply law of indices

[tex]c = \frac{1}{2^2}[/tex]

[tex]c = \frac{1}{4}[/tex]

Step-by-step explanation:

Answer:

1/4

halp plz i give crown, due in 30 mins

Answers

Answer:

Step-by-step explanation:

A. you put 46.2 in where the F is

h=61.412+2.317(46.2)

61.412+107.0454

= 168.4574cm

B.  

h=81.688+2.392(50.1)

= 201.5272 cm

C.

femur: 39.097

tibia: 31.357

humerus: 27.68

radius: 20.25

D.

F: 50.899

T: 42.355

H: 26.407

R: 28.11

Please help
It’s already late and I’m failing

Answers

i believe the answer is 128.2

Answer:

128.2

Step-by-step explanation:

58/19=3.05263158

3.05263158*42=128.2

can someone help me on this!!!​

Answers

Answer:

dates

Step-by-step explanation:

bestie it is dates i am sure of it.

What is the radius and diameter of the following circle?
7 cm

Answers

Answer:

What is the radius and diameter of the following circle? 5.1 cm radius= diameter=

Answer:

diameter =7 cm

where as radius =diameter /2

=7/2

=3.5cm

How many square feet of outdoor carpet will we need for this hole? ​

Answers

Answer:

42 sq ft

Step-by-step explanation:

First, I will do the small triangle on the right.

2 x 3 = 6

6/2 = 3 sq ft

Next the large rectangle.

11 x 3 = 33 sq ft

Next the large triangle on the left.

3 x (11-7)

3 x 4 = 12

12/2 = 6 sq ft

Add them all together.

6 + 33 + 3 = 42

sorry if im wrong <3

Six friends each drank 2/3 cup of juice (If a bottle of juice contains 3 cups, how many bottles of juice were needed?)

Answers

Answer:

2

Step-by-step explanation:

3 cups = 1 bottle

only 6 ppl so 3 cups + 3 cups = 6

Answer:

1 1/3. If you need to round up for how much they had, 2.

Step-by-step explanation:

12/3=4 cups. thats 1 bottle plus 1 cup

hope it helped!

The angle of depression from the top of the building to a telephone line attached to the ground is 34°.if the building is 25 feet tall how far from the building does a telephone line reach the ground

Answers

Answer:

88

Step-by-step explanation:

Pls help me if your great at math I’ll mark brainliest <3 (if correct)

Answers

Answer:

I believe it's B

Hope this helped<3

answer both and i will give brianlist

Answers

Answer:

1. Perpendicular

2. y=5x+7

Step-by-step explanation:

brainliest please?

Use the volume formula to find the volume of a box with the dimensions 29.3cm by 22.7cm by 5.3cm . Round your answer to the nearest hundredth

Answers

Answer:

3525.08 cm³

Step-by-step explanation:

Volume of box = length x breadth x height

= 29.3cm x 22.7cm x 5.3cm = 3525.083 cm³

hundredth is the second number after the decimal place. To round off to the nearest hundredth, look at the number after the hundredth, if it is equal or greater than 5, add one to the hundredth value. If it is not, add zero

Amanda and Carly have the same percentage of green marbles in their bags of marbles. Amanda has 4 green marbles and 16 total marbles. Carly has 10 green marbles. How many of Carly's marbles are NOT green?​

Answers

Answer:

30

Step-by-step explanation:

They both have the same percentage of green marbles, Amanda has 16 total marbles, 4 of them are green. So 25 percent of her marbles are green. If 25 percent of Amandas marbles are green, 25 % of Carlys marbles are green too. Carly has 10 green marbles, if 10 is 25 percent of the total amount then the total amount if 40, minus 10 from 40 because we only want the non green ones and the answer is 30. :)

(1,4) and (2,6) in slope-intercept form

Answers

Answer:

Slope is 2

Step-by-step explanation:

Answer:

The answer is y=2x+0 or y=2x

Step-by-step explanation:

What type of property is this?
8x(d+5)
Distributive
Commutative
Associative

Answers

Answer:

distributive

Step-by-step explanation:

this is distributive because the 8 is being multiplied by both d and 5 ; it is being distributed amongst them both

Geometry test, you only have to put the correct letter don’t worry about typing out the whole answer

Answers

I think the answer is A but not 100% sure

Mr. James accepted a new job with a starting annual salary of $32,500. He will receive an annual raise of $1,500 beginning his second year. How much money will Mr. James earn from
his salary for the first four years?

Answers

Answer:

He will earn $139,000 after 4 years

Step-by-step explanation:

32,500+34,000+35,500+37000= $139,000

Find the distance between the two points rounding to the nearest tenth (if necessary).

(−1,−2) and (5,2)

Answers

Answer:

7.2 units

Step-by-step explanation:

To find the distance between these two points, we want to use the distance formula: d = √[(x₂ - x₁)² + (y₂ - y₁)²]

Plug in the given values of (-1, -2) & (5, 2)

d = √[(x₂ - x₁)² + (y₂ - y₁)²]

d = √[(5 - (-1))² + (2 - (-2))²]

Simplify the parentheses.

d = √[(5 + 1)² + (2 + 2)²]

d = √[(6)² + (4)²]

Simplify the exponents.

d = √[36 + 16]

Add.

d = √[52]

Evaluate the radical.

2√13 or 7.2111

Round the decimal.

7.2 units

Hope this helps!

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