How much of a radioactive kind of bismuth will be left after 80 minutes if you start with 480
grams and the half-life is 20 minutes?

Answer:

option 1 , not correct

x + 3 > -7

x > -7 - 3

x > -10

x ={ - 9, - 8, - 7 . . .}

option 2, not correct

x - 3 ≤ -7

x ≤ -7 + 3

x ≤ -4

x = { -4, -5, -6 . . . }

option 3, not correct

x - 3 ≥ -4

x ≥ -4 + 3

x ≥ -1

x ={ -1, 0 , 1 , 2 . . .}

option 4, correct

x - 3 ≥ -7

x ≥ -7 + 3

x ≥ -4

x ={ -4, -3, -2 , -1 , 0 , 1 , 2. . . }

Answer:

Open up and have a minimum

Step-by-step explanation:

If the x² coefficient is:

Positive, the graph will open up and have a minimum

Negative, the gaph will open down and have a maximum

Answer:

opens up and has a minimum

Step-by-step explanation:

Provided a is not 0, y=ax^2+bx+c will be a parabola.

The parabola will open up and have a minimum if a is positive.

The parabola will open down and have a maximum if a is negative.

Since 1/2 is positive, then your parabola opens up and has a minimum.

Answer:

[tex]x=5/2, x=-3\\[/tex]

Step-by-step explanation:

[tex]x(2x+6)=5(x+3)\\2x^2+6x=5x+15\\2x^2+6x-5x-15=0\\2x^2+x-15=0\\2x^2+6x-5x-15=0\\2x(x+3)-5(x+3)=0\\(2x-5)(x+3)=0\\2x-5=0, x+3=0\\x=5/2, x=-3\\[/tex]

Answer:

The value of given expression = - 5mx

Step-by-step explanation:

Given expression;

10xm - 8mx + 6xm - 13xm

Find:

The value of given expression

Computation:

⇒ 10xm - 8mx + 6xm - 13xm

Step 1 ;

Rearrange expression;

⇒ 10mx - 8mx + 6mx - 13mx

Step 2 ;

Adding all terms

⇒ 10mx + 6mx - 8mx - 13mx

Step 3 :

Subtract term

⇒ 16mx - 21mx

⇒ -5mx

The value of given expression = - 5mx

Answer:

4/3pi

Step-by-step explanation:

Length of an arc  = r theta

Given radius r = 30

length of arc  l = 40

Substitute

40 = 30theta

theta = 40/30

theta = 4/3 pi

Hence the angle marked B is 4/3pi

Answer:

16277.76 in

Step-by-step explanation:

area

[tex]\pi \times {72}^{2} [/tex]

Answer:

3/10

Step-by-step explanation:

We have to list out the numbers that are divisible by 6 and 7 that we can find between 1 and 30

so, we have this as;

6,7,12,14,18, 21, 24,28 and 30

The count we have here is 9

The total number we have is 30

So the probability is simply the count we have divided by 30

so we have this as ; 9/30 =

3/10

Answer:

H = 31 degrees

Step-by-step explanation:

To find the value of the angle marked H, we will use he circle angle theorem

We have it that;

H = (88-26)/2

H = 62/2

H = 31 degrees

Answer:

well

dito binibigyan kita ng tagalol na wika

Answer:

[tex]7x^{8}[/tex]

Answer:

a. acute

b. right

c. obtuse

d. obtuse

Answer:

16x-77 add 77 to 115 then divide 115 and 16 and x is your answer

Answer:

The answer is : x=12

Step-by-step explanation:

Move all terms that don't contain the variable x to the right, then solve.

Please give me brainliest if I helped!

Answer:

translation by T (x-5 y+0)

Step-by-step explanation:

----------

Answer:

There is not a lot of change, the only change is that is moved 5 units to the right.

Step-by-step explanation:

Hope this helps! :)

Hope you a 100% on the test

Answer:

Standardized z score = 2.06

His house rent is not an outlier

Step-by-step explanation:

The mean monthly rent of students at Oxnard university is 970 with a standard deviation of 204. John`s rent is 1390. What is his standardized z-score? Is john`s rent an outlier? How high would the rent have to be to qualify as an outlier

We solve using z score formula

= z = (x-μ)/σ, where

x is the raw score = 1390

μ is the population mean = 970

σ is the population standard deviation = 204

His z score is calculated as:

z = 1390 - 970/204

z = 2.06

No his house rent is not an outlier

Answer:

72.033 ft

Step-by-step explanation:

To find this, let us set up a fraction. Since 18.47 = 1 second, y = is 3.9 seconds. Let "y" be the variable.

[tex]\frac{18.47}{1}=\frac{y}{3.9}[/tex]

Step 1: Switch sides

[tex]\frac{y}{3.9}=\frac{18.47}{1}[/tex]

Step 2: Apply rule: [tex]\frac{a}{1}=a[/tex]

[tex]\frac{y}{3.9}=18.47[/tex]

Step 3: Multiply both sides by [tex]3.9[/tex]

[tex]\frac{3.9y}{3.9}=18.47\cdot \:3.9[/tex]

Step 4: Simplify

[tex]y=72.033[/tex]

The bear can run 72.033 feet in 3.9 seconds

Answer:

eastern

Step-by-step explanation:

Answer:

Eastern!

Step-by-step explanation:

s

Answer:

i think 18

Step-by-step explanation:

bc like 3 cups-1 hour

6 cups- 2 hours

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

Answer: Because a decimal times a decimal is always going to be smaller than the original decimal.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer: 6 rooms

Step-by-step explanation:

3/8 rolls of wire are needed to wire a room in a house. If there are a total of 2¹/₄ rolls of wires, the number of rooms that could be wired is:

First convert to an improper fraction:

2¹/₄ = 9/4 rolls of wire

Total number of rooms that can be wired are:

= Total amount of wire available / Wires per room

= 9/4 ÷ 3/8

= 9/4 * 8/3

= 72 / 12

= 6 rooms

Answer:

to Region? Climate varies from region to region. This variation is driven by the uneven distribution of solar heating, the individual responses of the atmosphere, oceans and land surface, the interactions be- tween these, and the physical characteristics of the regions.

Step-by-step explanation:

hope it helps C:

#carryonlearning

Answer:

2:1

1:2

x=16

y=4

p=46

p=23

Step-by-step explanation:

Answer:

The answer is line D

Step-by-step explanation:

Given:

The a box-and-whisker plot if a data set.

To find:

The percentage of data values that are less than 66.

Solution:

From the given box-and-whisker plot, it is clear that the number 66  is the highest value of the data set.

It means all the values of the data set are less than 66 and no value can be more than 66.

All value means 100%.

Therefore, 100% of data values are less than 66.

Answer:

C is the answer n is the current amount your just taking way 15

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

root 24+12 is root 36 which is equal to 6

4 root of 6 is 36 the power of 2 which is equal to 36

5 the power of 2 is 25

then when we multiple 6x36x25

it's 5400

Answer:

Answer = 1080

Step-by-step explanation:

Hey there!

Here's the initial equation:

[tex]\sqrt{24+12} * \sqrt{6^4 * 5^2}[/tex]

What I'll do now is sum what's in the left root.

[tex]\sqrt{36} * \sqrt{6^4 * 5^2}[/tex]

Since [tex]\sqrt{36}[/tex] = 6, we get this equation:

[tex]6 * \sqrt{6^4 * 5^2}[/tex]

Now: You can see that the five is elevated to the second. Since it is a square root, you can just pop it out:

6 * [tex]5\sqrt{6^4}[/tex]

6 * 5 = 30, so here's what you got:

[tex]30\sqrt{6^4}[/tex]

At this point you should see that:

[tex]6^4[/tex] = 6 * 6 * 6 * 6

6 * 6 * 6 * 6 = 36 * 6 * 6

36 * 6 * 6 = 36 * 36

36 * 36 = 36²

Now you have this:

[tex]30\sqrt[2]{36^2}[/tex]

Since it is a square root and a square number, you can do just as with the five: Pop it out! (When you take numbers out of the root they multiply, they do not add. Never forget that ;).

30 * 36 = 1080

Answer = 1080

Answer:

Step-by-step explanation:

132°

Answer:

This is not a right triangle

Step-by-step explanation:

right triangle has a 90° angle and this triangle does not have a 90° angle