answer: 9
Step-by-step explanation:
x = - 4; y = 3; z = 2;2 x² - 2 z^4 + y² - x² + z^4 = = 2 * (-4)² - 2 * 2^4 + 3² - ( -4)² + 2^4 == 2 * 16 - 2 * 16 + 9 - 16 + 16 = = 32 - 32 + 9 - 16 + 16 = 9
calculate the no. of water molecular in a drop 0.0018 ml at room temp (density of h₂0 =1gm/m
Molar mass of H_20
[tex]\\ \sf\longmapsto 2(1u)+16u[/tex]
[tex]\\ \sf\longmapsto 16u+2u[/tex]
[tex]\\ \sf\longmapsto 18g/mol[/tex]
Now
[tex]\boxed{\sf No\;of\:moles=\dfrac{Given\:Mass}{Molar\:Mass}}[/tex]
[tex]\\ \sf\longmapsto No\:of\;moles=\dfrac{0.0018}{18}=0.0001mol[/tex]
Now
[tex]\boxed{\sf No\;of\;molecules=No\:of\;moles\times Avagadro\:No}[/tex]
[tex]\\ \sf\longmapsto 0.0001\times 6.023\times 10^{23}[/tex]
[tex]\\ \sf\longmapsto 0.0000166\times 10^{23}[/tex]
[tex]\\ \sf\longmapsto 1.6\times 10^{18}molecules[/tex]
15 − (n − 3) = 3(n + 5) help question 7
Answer:
n=3/4
Step-by-step explanation:
[tex]15 - (n - 3) = 3(n + 5) \\ 15 - n + 3 = 3n + 15 \\ - n + 3 = 3n \\ - n - 3n = - 3 \\ - 4n = - 3 \\ n = \frac{3}{4} [/tex]
[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]
15 − (n − 3) = 3(n + 5).[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]
[tex] \large \boxed{\bf \: n=\frac{3}{4}=0.75}[/tex]
[tex] \huge \boxed{\mathfrak{Explanation} \downarrow}[/tex]
[tex] \large \sf \: 15 - ( n - 3 ) = 3 ( n + 5 )[/tex]
To find the opposite of n-3, find the opposite of each term.[tex] \large \sf \: 15-n-\left(-3\right)=3\left(n+5\right) [/tex]
The opposite of -3 is 3.[tex] \large \sf \: 15-n+3=3\left(n+5\right) [/tex]
Add 15 and 3 to get 18.[tex] \large \sf \: 18-n=3\left(n+5\right) [/tex]
Use the distributive property to multiply 3 by n+5.[tex] \large \sf \: 18-n=3n+15 [/tex]
Subtract 3n from both sides.[tex] \large \sf \: 18-n-3n=15 [/tex]
Combine -n and -3n to get -4n.[tex] \large \sf \: 18-4n=15 [/tex]
Subtract 18 from both sides.[tex] \large \sf \: -4n=15-18 [/tex]
Subtract 18 from 15 to get -3.[tex] \large \sf-4n=-3 [/tex]
Divide both sides by -4.[tex] \large \sf \: n=\frac{-3}{-4} \\ = > \: \large \boxed{\bf \: n = \frac{3}{4} = 0.75} [/tex]
Job A: $15.00 per hour (40 hours a week)Job B: $1,375 semi-monthly
a. Which job pays more?
b. How much more?
Answer:
Step-by-step explanation:
JOB A: 40*15=600 PER WEEK
600*4=2400 PER MONTH
JOB B; 1375*2=2750 PER MONTH
JOB A PAYS MORE 2750-2400=350.00
WITH 350.00 DOLLARS
Which number is 30 times larger than the value below 3 x 10
Answer:
900
Step-by-step explanation:
Value of (3 × 10) = 30
30 times the value of (3 × 10)
= 30 × (3 × 10)
= 30 × 30
= 900
Can someone help me (Geometry)
What is the right answer????
Please answer this question with a explanation pleaseee it would help a lot!!!!
Answer ASAP
Anybody know the awnser to number 4 and 5 please awnser fast if you know it
Answer:
the final answer of 4 should be 24 7/12.
Step-by-step explanation:
in the given figure , ab //cd then find the value of x
Sum of interiors =exterior
[tex]\\ \sf\longmapsto x+60=110[/tex]
[tex]\\ \sf\longmapsto x=110-60[/tex]
[tex]\\ \sf\longmapsto x=50[/tex]
if 12z5 is a multiple of 3, where z is a digit. what might be the values of z?
Answer:
Playing with Numbers
∵ 31 z5 is divisible by 3. ∴ ( 9 + z) must be divisible by 3. since, z is a digit. ∴ Possible values of z are 0, 3, 6 or 9.
Which graph best represents the equation y= -2/3x+4?
Answer:
The first one
Step-by-step explanation:
You have a negative slope, so it should be falling or going downwards. Your y-intercept is 4, so it should hit 4 on the y-axis. Hope this helped!
Answer:
The first graph
Step-by-step explanation:
The slope is -2/3
slope is rise over run
y intercept equals 4
In a group of 100 people, 94 like coffee and 93 like tea and each person likes at least one of the two drinks. Find the number of people who like both coffee and tea
Answer:
Step-by-step explanation:
ill give u brainly if u get the correct answer
Answer:
use synthetic division method
A new television set was recently purchased for the common room in a Residence Hall for 486.00 including tax. If the tax rate is 8%, find the price of the television set before taxes.
(Type an integer or a decimal rounded to two decimal places.)
(Answer quickly)
Answer:
$450
Step-by-step explanation:
If the tax rate is 8% that would mean it is 1.08 and you can multiply 1.08 with 450 and get 486 as the answer.
► 1-79 A new car purchased for $27.000 loses 15% of its value each year.
I already have the answer for x but is this complementary or supplementary
Answer:
supplementary
Step-by-step explanation:
How to find the volume of a rectangle
WILL GIVE BRAINILEST!!!!!
Answer:
85/6 sq in × 5/2 in = 425/12 cu in.
can some one read what this says and plz give me the answer tw! - due in 3 min
Answer:
she began to wonder If a fruits size is related to whether it floats or sinks
Step-by-step explanation:
this where the question begins
The mean life time of sample of 100 fluorescent light bulbs produced by a company is computed to be 1570 hours with a standard deviation of 120 hours. The company claims that the average life of the bulbs produced by it is 1600 hours. Using the level of significance of 0.05, is the claim acceptable?
Answer:
The mean lifetime of a sample of 100 fluorescent light bulbs produced by a company is
The mean lifetime of a sample of 100 fluorescent light bulbs produced by a company is computed to be 1570 hours with a standard deviation of 120 hours.
Step-by-step explanation:
https://www.cs.bu.edu/faculty/snyder/cs237/Handouts%20and%20Web%20Documents/Handouts/PracticeProblemsHypothesisTesting.pdf
Have a bless day
Write the expression in simplest radical form.
Answer:
im not sure if this is correct 16.97056274 hope it helped ;-;
Step-by-step explanation:
divide 200 between Sita and Geeta in the ratio 2:3
Answer: 80:120
Step-by-step explanation:
hi <3
2 + 3 = 5
200/5 = 40
2 x 40 = 80
3 x 40 = 120
sita gets 80 and geeta gets 120
hope this helps :)
PLEASE HELP ME 40 POINTS
Answer:
Brainliest is appreciated
-4, -1, 5
Step-by-step explanation:
when x = -1
y= 3x - 1
3(-1) - 1
-3 -1
-4
when x = 0
y = 3x - 1
3(0) - 1
0 - 1
-1
when x = 2
y = 3x -1
3(2) - 1
6 - 1
5
Step-by-step explanation:
[tex]y = 3x - 1[/tex]
Putting x = -1
[tex]y = 3( - 1) - 1[/tex]
[tex]y = - 3 - 1[/tex]
[tex]y = - 4[/tex]
Putting x = 0
[tex]y = 3(0) - 1[/tex]
[tex]y = 0- 1[/tex]
[tex]y = -1[/tex]
Putting x = 2
[tex]y = 3(2) - 1[/tex]
[tex]y = 6 - 1[/tex]
[tex]y = 5[/tex]
50% of 320 is equal to 80% of what number?
Answer:
50% of 320 is equal to 80% of 200
Step-by-step explanation:
[tex]\sf{50\% \times 320}[/tex]
[tex]\sf{ = \frac{50}{100} \times 320 }[/tex]
[tex]\sf{ = \frac{16000}{100} }[/tex]
[tex] = \sf{160}[/tex]
-
[tex]\sf{160 \div 80\%}[/tex]
[tex]\sf{ = 160 \div \frac{80}{100} }[/tex]
[tex]\sf{ =\cancel{ 160} \times \frac{100}{\cancel{80}} }[/tex]
[tex]\sf{ = 2 \times 100}[/tex]
[tex] = \boxed{\sf{\underline{\purple{200}}}}[/tex]
Answer:
50% of 320 is equal to 80% of 200.
Step-by-step explanation:
Given,
50% of 320 is equal to 80% of a number (let it be x)
Now,
50% of 320
= 50% × 320
= 50/100 × 320
= 50/10 × 32
= 5 × 32
= 160
Also now,
160 is equal to 80% of x.
80% of x = 160
80% × x = 160
80/100 × x = 160
8/10 × x = 160
4/5 × x = 160
4/5x = 160
x = 160 ÷ 4/5
x = 160 × 5/4
x = 40 × 5
x = 200
Si jaimito compro 27 lapices a s/. 2 cada uno para venderlo a s/. 5 la unidad ¿Cuanto ganara por los 27 lapices?
Answer:
135
27 × 5= 135
Hope it helps you!
5 6/30+1 3/4=
Need step by step answers
Answer:
Step by step answers are key,... and they're below,... ;->
Step-by-step explanation:
This is your equation:
[tex]5 \frac{6}{30} + 1\frac{3}{4}[/tex]
Make both fractions improper fractions (this makes them easier to work with) All you did to convert your two mixed number into improper fractions is:
Multiply the denominator (the bottom number in a fraction in this case 30) by the number not in the fraction (5), 30x5=150 and then add the product (150) to the numerator (the top number in a fraction (which in this case is 6))
[tex]5\frac{6}{30} = \frac{156}{30}[/tex]
Do the same to the other mixed number (turning it into a improper fraction), Multiply the 4x1=4, add the product to the numerator 4+3=7 and then you have your second improper fraction
[tex]1\frac{3}{4} = \frac{7}{4}[/tex]
Your new equation:
[tex]\frac{156}{30} +\frac{7}{4}[/tex]
Now you need to get both denominators the same so you can add the together,... the easiest way to do this is to multiply the two denominators together,... 30x4=120
[tex]\frac{x}{120} + \frac{x}{120}[/tex]
But how do we know what the numerator are to be? What you have to do is the following,... you had to multiply 30 by 4 to get to 120, so you have to multiply the 156 by 4 to make an equivilant fraction,... 156x4=624
[tex]5\frac{6}{30} = \frac{156}{30} = \frac{624}{120}[/tex]
Like wise you had to multiply 4 by 30 to get to 120 so you have to multiply the numerator by 30 to make the fraction hold the same value,... 7x30=210
[tex]1\frac{3}{4} = \frac{7}{4} =\frac{210}{120}[/tex]
Now all that is left is to add:
[tex]\frac{624}{120} +\frac{210}{120} =\frac{834}{120}[/tex]
The answer is 835/120 simplify is or 6 19/20 or 6.95
Hope that was explination enough,... and have a SUPER-EXTRA-ORDINARILY-AMAZINGLY-AWESOME day,...
Chow,...!
When Han makes chocolate milk, he mixes 2 cups of milk with 3 tablespoons of chocolate syrup. Here is a table that shows how to make batches of different sizes. What is the constant of proportionality for this relationship?
your answer would be 1.5
Answer:
The constant of the proportionality for this relationship is tablespoons and chocolate and cups of syrup.
Step-by-step explanation:
Find the following difference 17 - 3.
Answer:
14
Step-by-step explanation:
Can I please get help on this one.
Is -7x + 11 = 19 + 11 + 12x
A one solution or a no solution or is it a real number
[tex]-7x+11=19+11+12x[/tex]
[tex]19x=19\implies x=1[/tex]
There is one solution and also that solution is a real number.
Hope this helps :)
Answer:
I believe it's "one Solution"
Step-by-step explanation:
Real numbers things like pi and (algerbraicly) Square roots. Plus, this question deffo has a solution... The only one that makes sense is one solution.
haaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Answer:
ha+ha = haaaaa
XD
Step-by-step explanation:
>3
