Answer:
n=5
Step-by-step explanation:
divide by 0.5
6n-4=26
(add 4 to both sides)
6n=30
Divide both sides by 6
n=5
A chemist measures the boiling point of a sample of benzene as 79.8 degrees Celsius. The actual boiling point is 80.1 degree Celsius. Round to the nearest hundredth of a percent, what is the percent error in the boiling point for the sample? Put the % sing after your numbers and do not put spaces in your answer.
Answer:
-0.375%
Step-by-step explanation:
Here, we want to calculate the percentage error
Mathematically;
% error = error/true value * 100%
error= the difference between the true value and the calculated
That is;
79.8-80.1 = -0.3
% error = -0.3/80.1 * 100%
% error = -0.375%
what do -4 (x+7)-4 equal
Answer:
-4x-32 Can i please get a brainliest because this correct.
Step-by-step explanation:
−4(x+7)−4
Distribute:
=(−4)(x)+(−4)(7)+−4
=−4x+−28+−4
Combine Like Terms:
=−4x+−28+−4
=(−4x)+(−28+−4)
=−4x+−32
Answer:
=−4x−32
Write the number in standard form.
2 x 102
Answer:
210
Step-by-step explanation:
What are the coordinates of each point after quadrilateral ABCD is rotated 270° about the origin?
Answer:
A'(1, -1), B'(3, -2), C'(3, -4), D'(1, -5)Step-by-step explanation:
The rule for a rotation by 270° about the origin is:
(x, y) → (y, −x)Coordinates of ABCD:
A(1, 1), B(2, 3), C(4, 3), D(5, 1)Coordinates of the image:
A'(1, -1), B'(3, -2), C'(3, -4), D'(1, -5)Answer:
A'(1,-1) , B'(3,-2) , C'(3,-4) , D'(1,-5)
These are correct answers hope this helps. :)
Step-by-step explanation:
i’m stuck on these ones too
Answer:
7.D) 107°
8. A) 123°
Step-by-step explanation:
To find the correct measurement of the angel the sum of the interior angels needs to equal 360°. Angels where the lines intersect with the circle would be both 90°. ( If that makes sense.)
90°+90°=180
180°+73°= 253°
360°-253°= 107°
The same for the second one. (those two angles would also be 90° each.)
90°+90°=180°
180°+57°=237°
360°-237°=123°
Solve the literal equation for y.
6x + 3y = 3
Answer:
6
Step-by-step explanation:
because 3x3=6
so y would have been 6 not sure if am correct but I'm trying something
Which of the following is a pair of like terms? *
O 3x and y
2a and -4b
-9y and 7y
8 and 10y
Answer:
-9y and 7y are a pair of like terms.
Step-by-step explanation:
Like terms are the terms which have same variable and power. The coefficient is not necessary to be same.
Find the equation of straight line passing through the point:
a) (4,8) and parallel to the line 3x+y=17
b) (2,3) and perpendicular to the line y=2x+13
I need the answers ASAP please!
Answer:
See solution below
Step-by-step explanation:
Standard equation of a line in point slope form is expressed as y-y0 = m(x-x0)
m is the slope
c is the intercept
Fr the equation 3x+y = 17
y = -3x+17
m = -3
Given the point (4,8)
The equation of the line is expressed as;
y - 8 = -3(x-4)
y - 8 = -3x + 12
y + 3x = 12+8
y+3x = 20
This gives the required equation
For the equation y = 2x + 13
Slope m = 2
Since the line is perpendicular to the unknown line;
M = -1/2
Given the point (2, 3)
Get the equation
y - 3 = -1/2(x - 2)
2(y-3) = -(x - 2)
2y-6 = -x+2
2y+x = 2 + 6
2y+x = 8
This gives the required equation
There were 10 cards in a bag labeled 0-9 what is the probability of drawing a 3 and then a 5 if the first card is not replaced before the second drawn
Answer:
1/9 chance
Step-by-step explanation:
I need help solving this one.
Answer:
Check pdf
Step-by-step explanation:
Help, I'm confused. Will mark brainliest.
Justin is evaluating the expression 12.53.8x, when x is 7.9.
12.5+3.847.9)
16.3(7.9)
128.77
What was Justin's error?
Justin should have multiplied 12.5 and 7.9 first.
Justin should have added 12.5 and 7.9 first.
Justin should have multiplied 3.8 and 7.9 first.
O Justin should have added 3.8 and 7.9 first.
Answer:
C.) Justin should have multiplie 3.8 and 7.9 first.
Step-by-step explanation:
To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.
What is the perimeter of the parallelogram? 12 cm 6 cm 5 cm 7 cm
Answer:
12
Step-by-step explanation:
A circle has a radius of twenty-one centimeters.
Find the circumference. Round your answer to the nearest hundredth. Use 3.14 for π.
Answer:
313 is the answer
Step-by-step explanation:
gctckfjgufyd
please awnser this asap
Answer:
240ft
Step-by-step explanation:
You have to multiply length x width x height In this case its 12 x 4 x 5
what number is halfway between 5.3 and 5.4
Answer:
5.35
Step-by-step explanation:
I need help with this question.
Answer:
59
Step-by-step explanation:
We know that all the angles must add up to 180
so we have
38+2b-20+b-15=180
solve for b
3b+3=180
3b=177
b=59
Answer:
b=59
Step-by-step explanation:
angles in the triangle add up to 180
this would mean that
38 +2b-20 + b-15 = 180
if we simplify this then it would be
3+3b= 180
rearrange
3b = 177
b = 59
forty-five hundredths as a decimal
Answer:
0.45
Step-by-step explanation:
easy
PLEASE HELP FAST
Sadie is going to invest in an account paying an interest rate of 3.1%
compounded annually. How much would Sadie need to invest, to the nearest
hundred dollars, for the value of the account to reach $1,030 in 16 years?
Answer:
where is the explanation
Answer:
630
Step-by-step explanation:
-9-5+10d= please help
Answer:
-14+10d
Step-by-step explanation:
-9-5+10d
add like terms
-14+10d
Answer:
If you're trying to simplify it the answer is -14 + 10d
Find the value of 35° 9
Answer:
26°9
iuuiiii not sure tttt
Dolores spent $ 13.00 of the $20.00 in her wallet. Which decimal represents the fraction of the $20.00 Dolores spent?
A. 0.35
B. 0.13
C. 0.07
D. 0.65
Answer:
In order to find the fraction of the 20 dollars that has been spent, we have to divide the amount spent by the total amount. So 0.65 is the fraction of 20 that is spent.
Step-by-step explanation:
Cuide
A student made a scale drawing of a large block C that will be painted on the wall of the locker room.
10
9
8
7
6
5
4
3
2
1
E
Key
= 0.5 feet
0
1 2 3 4 5 6 7 8 9 10
What is the area, in square feet, of the actual painted C?
12.5
15.5
25
50
Answer:
Step-by-step explanation:
the wall is 10 by 10 and a block C is painted on it
I used 22 squares to draw a square - ish block C as large as I could and I
l left a 'frame' of unpainted blocks around C
9 by 8 block C on a 10 by 10 wall
Δ Δ Δ Δ Δ Δ Δ Δ Δ
Δ
Δ
Δ THIS IS A TOTAL GUESS I really need more informaiton
Δ
Δ
Δ
Δ Δ Δ Δ Δ Δ Δ Δ Δ
hey guy i need help on this
Answer:
14
Step-by-step explanation:
Answer:
14
Step-by-step:
[tex](12 - 9)^{2} + \frac{15}{3} \\ (3) ^{2} + \frac{15}{3} \\ 9 + \frac{15}{3} \\ 9 + 5 \\ = 14[/tex]
Find x
11
170
Х
O 1.8
0 37.6
0 3.2
0 3.6
i
Answer:
Step-by-step explanation:
Help Please Brainlist if correct (dont answer if you dont know please)
Answer:
The answer is 6.8
Step-by-step explanation:
Check on your calculator 6.8^2 equals 46
Find the surface area.
5 cm
14 cm
9 cm
3 cm
Answer:C. 2/3 cm/s
Step-by-step explanation:
The ratio of the number of Rutgers basketball fans to the number of Seton Hall basketball fans is 10:2. What fraction of the fans are Seton Hall fans?
Answer:
1/6 of the fans are Seton Hall fans
Answer:
2/12
srry if I'm wrong
solve using they law of exponents
x^2 x x^-5
Answer:
−103
Step-by-step explanation:
Kayden is a teacher and takes home 100 papers to grade over the weekend. He can grade at a rate of 6 papers per hour. How many papers would Kayden have remaining to grade after working for 10 hours?
Answer:
40
Step-by-step explanation:
6 * 10 = 60 papers done and complete
100- 60 = 40
Answer:
40 papers will be remaining
Step-by-step explanation:
= As,It take 1 hour to grade 6 papers
= 1 -6
= 10-?
= by cross multiplying we get 60 papers
= 100 - 60
= 40 papers
Thank you