MATHEMATICS HIGH SCHOOL

If we have a sample of silicon (Si) atoms that has 14 protons, 14 electrons, and 18 neutronsWhat is the name of this specific silicon isotope?

silicon-14
silicon-32
silicon-46
silicon-153

Answers

Answer 1
Answer:

Answer:

Its silicon-32 because if you want to find an isotope, you have to add the number of protons (14) and number of neutrons (18) to get 32 as your total.

Step-by-step explanation:

Hope this helps
Answer 2
Answer:

Answer:

b

Step-by-step explanation:

edge 2022

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An empty bucket is placed under a faucet dripping at a constant rate of 4 milliliters per minute. With the given information, which of these statements is a reasonable conclusion? There will be 24 milliliters of water in the bucket after 16 hour. There will be 60 milliliters of water in the bucket after 14 hour. There will be 160 milliliters of water in the bucket after 20 minutes. There will be 100 milliliters of water in the bucket after 40 minutes.

In which quadrants is the ordinate positive?a)I and II
b)II and III
c)I and IV

Answers

The ordinate is the y element in an ordered pair in a Cartesian coordinate system. The quadrants in which the ordinates are positive should be at quadrants I and II. Therefore, the correct answer from the choices listed above is option A.

Answer:

The Answer Is A

Step-by-step explanation:

4. Estimate the sum of 9.327 + 5.72 + 4.132 to one decimal place.18.729

Answers

Answer:

Hence, the estimate value of  9.327 + 5.72 + 4.132 to one decimal place is:

 19.2

Step-by-step explanation:

We have to Estimate the sum of 9.327 + 5.72 + 4.132 to one decimal place

We find the sum of these numbers:

Sum=  9.327+5.72+4.132

      =  19.179

Now we have to estimate the value to one decimal place

  so, on approximating the value, we get the sum=19.2

Hence, the estimate value of  9.327 + 5.72 + 4.132 to one decimal place is:

19.2
The sum for those numbers is 19.179 NOT 18.729. HOWEVER the Estimation of the sum and the answer for this question is 19.2 because the decimal place you are finding has a number to its right that is greater to that decimal place so you add the one to the decimal place you are finding.

What is the product of 3a 5 and 2a2 4a – 2? 6a3 22a2 14a – 10 6a3 22a2 26a –10 18a3 10a2 14a – 10 28a3 14a – 10

Answers

The product of  3a + 5 and 2a2 + 4a – 2 is \rm 6a^3+22a^2+14a-10\n, the correctoption is A.

What is the product of two algebraic expressions?

When two algebraic expressions are multiplied, the result is called the product, and the two expressions making up the product are called factors and multiplicands.

The multiplication of two algebraic equations can be expressed as a × b.

The product of 3a + 5 and 2a2 + 4a – 2 is determined in the following steps given below.

\rm =(3a + 5) *( 2a^2 + 4a -2)\n\n= 3a ( 2a^2 + 4a -2) +5( 2a^2 + 4a -2)\n\n =6a^3+12a^2-6a+10a^2+20a-10\n\n=6a^3+22a^2+14a-10\n

Hence, the product of  3a + 5 and 2a2 + 4a – 2 is \rm 6a^3+22a^2+14a-10\n.

To know more about multiplication click the link given below.

brainly.com/question/14059007

Answer:

6a3 + 22a2 + 14a - 10

Step-by-step explanation:

(3a + 5) x (2a^2 + 4a - 2)

= 3a(2a^2 + 4a - 2) + 5(2a^2 + 4a - 2)

= 6a^3 + 12a^2 - 6a + 10a^2 + 20a - 10

= 6a^3 + 22a^2 + 14a - 10

How to calculate percentage

Answers

take the number and divide it by the number percentage then put the percentage sign then press the = sign

Help me plz with this question

Answers

Answer:

y= -6x+23

Step-by-step explanation:

perpendicular: opposite signs and reciprocal

m= 1/6 and y-intercept = 23

y= -6x+23

A hot air balloon can hold 90,000 cubic feet of air. It is being inflated at a rate of 6,000 cubic feet per minute. The total cubic feet of air a(t) is a function of the in minutes t. a. Identify the independent and dependent variables. b. What values of the domain and range make sense for this situation? Explain. c. Write a function to represent the total amount of air. Then determine the total amount of air in 6 minutes.

Answers

a. The independent variable is the variable whose variation does not depend on that of another, it is often denoted by x.
In our case independent variable is time in minutes
The dependent variable is the volume of air in the balloon. 

b] The domain of the of this situation is:
[0≤t≤15]
this is because t will take 15 minutes for the balloon to get filled.

The range of the situation will be:
[0≤a(t)≤90000]

c]The function that represents this situation is a linear function given by:
y=ax+b
where:
a=rate/slope
b= initial amount of air in the balloon=0
Thus our function will be:
a(t)=6000t

d]
The total amount of air in the balloon after 6 minutes will be given by:
from
a(t)=6000t
a(6)=6000(6)
a(6)=36000 cubic feet
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