A radioactive substance decays exponentially. A scientist begins with 150 milligrams of a radioactive substance. After 20 hours, 75 mg of the substance remains. How many milligrams will remain after 27 hours?

Answer:

4.75 divided by 5 =0.95

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

positive A and negative B does not equal positive B and negative A

Answer:

FALSE

Step-by-step explanation:

Answer: The graph I have attached an image of does not represent a function.

Step-by-step explanation:

This is because if we take the vertical line test, which is to draw a vertical line through any point of the x-axis. If the line passes through two points when it is vertical, the line doesn't represnt

a function.

Answer:

The correct answer goes from the 1st quadrant to the 4th quadrant.

Step-by-step explanation:

~Hope this helps!

Answer:

-23 over 10

Step-by-step explanation:

Hope this helped :)

Answer:

253/20

Step-by-step explanation:

(−2 1/5) × (−5 3/4) =

1. change both mixed numerals into fractions.

= -11/5 × (-23/4)

2. Since both numbers are negative, the product is positive. Multiply both numerators together. Multiply both denominators together.

= 253/20

253 is the product of 2 prime numbers, 11 and 23. 20 is the product of 2² and 5. There are no common factors in the numerator and denominator, so this fraction cannot be reduced.

Answer: 253/20

Hello!

0.85b-0.2b

0.65b

0.65b=0.65b

So these expressions are equivalent.

Hope it helps!

~Just a determined gal

#CarryOnLearning

[tex]MysteriousNature[/tex]

Answer:

66 anches beacause i don't know

Step-by-step explanation:

The probability that we will be lucky tomorrow and encounter neither tornadoes nor a monsoon is 0.85

Probability is the likelihood or chance that an event will occur.

Probability = Expected outcome/Total putcome

If there is a 15% chance that tornadoes and monsoon will occur, hence the

the probability that we will be lucky tomorrow and encounter neither tornadoes nor a monsoon will be expressed as:

Pr(neither tornadoes nor a monsoon) = 1 - Pr(both will occur)

Pr(neither tornadoes nor a monsoon) = 1 - 0.15

Pr(neither tornadoes nor a monsoon) = 0.85 =  85%

Hence the probability that we will be lucky tomorrow and encounter neither tornadoes nor a monsoon is 0.85

Learn more on probability here: https://brainly.com/question/13604758

Answer:

ninth power of 10

Step-by-step explanation:

count the number of digits then subtract 1

Answer:

ff

Step-by-step explanation:

Answer:

g(x+5)=x2+7x+10

Step-by-step explanation:

Answer

f= 1

step by step explanation

The slope of the line is 2/1 and the y-intercept is (0,-3). Using that information, we can figure out two points on the line.

Point 1: (0,-3)

Point 2: (1,-1)

Answer:the answer is true

Step-by-step explanation:

Because the two triangle are congruent ASA

Answer:

5/4 and 7/4 are the two solutions.

Answer: Definitely point A

Step-by-step explanation:

Answer:

the answer is expkained below

Answer:

Evans dog would weigh 39 pounds

Step-by-step explanation:

117= 3 × X

Take 117 and divide it by 3 and the answer we would get is 39

117 ÷ 3 = 39

To double check the answer we could multiply 39 by 3 to see if we 117.

39 × 3 = 117

X= 39 pounds, so Evans dog is 39 pounds

Answer:

100 points hope to spell header?

Step-by-step explanation:

Answer:

do you mean harder?

Step-by-step explanation:

and if you mean harder it is spelled : H A R D E R

Answer:

m∠A=88°

Step-by-step explanation:

∠ABC=∠ACB=46° (base angles of isos triangle)

           ∠BAC=180°-46°-46° (angle sum of triangle)

                     =88°

Answer: A

You could put this in a ratio of flour to sugar 9/8 : 3/4. If we need to find out how many cups of flour are required for each cup of sugar, then we’ll need to divide both sides by 3/4 to get to 1 cup of sugar so that we can find how many cups of flour are required for this amount. The flour is 9/8 cups which then gets divided by 3/4 and is 1/2 so this is our answer.

Answer:

So the answer is... Hold on... Ok i did my research and the answer is........

Step-by-step explanation:

1. Economic

The Industrial Revolution stimulated the hunt for colonies. First, colonies provided raw

materials. Second, colonies served as a market for surplus manufactured goods.

2. Political

Every country wanted national hegemony – that is, to be the No. 1 imperialist country in the

world. To achieve this, they wanted to control as much of the world as

possible. The nation’s greatness is measured by the quality and quantity

of its colonies. Folks wanted to plant the flag in as many places as

possible. Every country wanted recognition as a world power. They

wanted to improve their reputation among other European countries.

They wanted to increase their political power and prestige. Every country

was in competition with its rivals. You took territory – simply to prevent

your rival from getting it!

3. Military

Every imperialist country was worried about its own national security: The competition

among imperialist powers was vicious. One had to protect one’s own

country and its colonies. Every country wanted to gain military

advantage over its rivals. A colony could serve as a fueling station for

the Navy. A ship could stop and load up on supplies. Some spots in the

world, especially waterways, were strategically important. The Navy

was paramount: It must have freedom to travel to and from the

colonies.

4. Cultural

Social Darwinism was the prevailing belief in Europe. It explained why some countries were

rich and some were poor. People compete for survival. The strong survive.

The rich were naturally superior. The weak were unfit. Poverty was a sign of

being unfit. The poor were naturally inferior. The European colonizers were

the Superior Races. The African and Asian colonized were Inferior Races. The

Europeans regarded themselves as racially and culturally superior to the people

of Africa and Asia. Humanitarians argued that it was Europe’s noble duty to

uplift and enlighten the backward peoples. Belief in Anglo-Saxon superiority

was prevalent.

5. Religious

The “missionary impulse”: Christianity is superior to all other religions. We must

spread Christianity to Asia and Africa. Religion encouraged imperialism. People

felt they needed to acquire territory in order to Christianize people. A serious

moral issue – Christianity is in direct conflict with Social Darwinism. Under

Christianity, all people are equal in God’s eyes. Under Social Darwinism, the

Europeans are superior and the Africans and Asians are inferior. There was also a

certain element of hypocrisy: While the Europeans spoke of uplifting people, they

were actually motivated by profit and greed.

Answer:

y=-6x

Step-by-step explanation:

Slope intercept form is y=mx+b where b is the y intercept and m is the slope. In this particular example, the y intercept is at (0,0), the origin, so b=0. y=mx+0 or just y=mx. Now, to determine the slope, we must look at the graph. It appears the graph intersects the point (-10, 60) as well as the point (0,0). Other than just calculating it quickly in your head, the way to get slope from that is y1-y2/x1-x2. Setting that up, 60-0/-10-0, which is 60/-10, which is equal to -6. Put that into the equation and you get y=-6x

Answer: annualcreditreport.com

Step-by-step explanation: The only authorized website for free credit reports, or call 1-877-322-8228

Answer:

75 percent

Step-by-step explanation:

see the thing is

The probability that exactly 5 are sedimentary is from a shipment which contains 9 igneous, 7 sedimentary, and 7 metamorphic rocks is 21/33649.

Combination is the way of arrangement or the collection of items in the particular order. The order of this group of items does not matter in the combination type of arrangement.

A shipment contains 9 igneous, 7 sedimentary, and 7 metamorphic rocks. If 7 rocks are selected at random, find the probability that exactly 5 are sedimentary.

Number of ways to choose 5 sedimentary from 7  sedimentary is,

[tex]^7C_5=\dfrac{7!}{(7-5)!5!}\\^7C_5=\dfrac{7\times6\times5!}{2!5!}\\^7C_5=\dfrac{7\times6}{2\times1}\\^7C_5=21[/tex]

There are total 23 rocks (9+7+7). Number of ways to choose 7 rocks from 23 rocks is,

[tex]^{23}C_5=\dfrac{23!}{(23-5)!5!}\\^{23}C_5=\dfrac{23!}{18!5!}\\^{23}C_5=33649[/tex]

Thus, the probability that exactly 5 are sedimentary is,

[tex]P=\dfrac{21}{33649}[/tex]

Hence, the probability that exactly 5 are sedimentary is from a shipment which contains 9 igneous, 7 sedimentary, and 7 metamorphic rocks is 21/33649.

Learn more about the combination here;

https://brainly.com/question/17139330

#SPJ2

Answer:

10.5

Step-by-step explanation:

Given the two similar triangles below, which proportion is not true?

i need help with this can ya help

Sorry i know this isnt an answer.

Answer:

15

Step-by-step explanation:

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